Thermostats and housings in the cooling system

At Global Parts, we offer a wide selection of original used car parts, including thermostats and housings for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Our thermostats and housings undergo quality control to ensure you receive a top-quality product.

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Mercedes W211 OM646 Diesel Radiator Coolant Thermostat Housing A6462000715

Part no. A6462000715

Mercedes W211 OM646 Diesel Radiator Coolant Thermostat Housing A6462000715

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Mercedes W204 W212 GL X164 OM642 Coolant Housing Valve A6422002215

Part no. A6422002215

Thermostat Mercedes W204 W212 GL X164 OM642 Coolant Housing Valve A6422002215

€37.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W204 W212 W221 OM642 Thermostat Water Coolant Diesel Heat Management

Part no. A6422001615

Mercedes W204 W212 W221 OM642 Thermostat Water Coolant Diesel Heat Management

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W213 W447 OM654 Diesel Coolant Thermostat Housing Unit A6542000115

Part no. A6542000115

Mercedes W213 W447 OM654 Diesel Coolant Thermostat Housing Unit A6542000115

€56.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W212 Diesel OM651 Coolant Pipe Fuel Filter Bracket A6512001956

Part no. A6512001956

Mercedes W212 Diesel OM651 Coolant Pipe Fuel Filter Bracket A6512001956

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes C117 W176 W246 M270 Coolant Thermostat Housing A2702000615

Part no. A2702000615

Mercedes C117 W176 W246 M270 Coolant Thermostat Housing A2702000615

€47.95

Free delivery: Jul 23 – 24

If paid before 14:00

Water Pump Hose Mercedes W204 OM651 Diesel Engine Coolant Line A6512000251

Part no. A6512000251

Water Pump Hose Mercedes W204 OM651 Diesel Engine Coolant Line A6512000251

€37.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Housing Mercedes W204 W207 W212 OM651 Coolant Unit Cover A6512001056

Part no. A6512001056-1

Thermostat Housing Mercedes W204 W207 W212 OM651 Coolant Unit Cover A6512001056

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W176 Petrol Engine M270 Coolant Thermostat A2702002200

Part no. A2702002200

Mercedes W176 Petrol Engine M270 Coolant Thermostat A2702002200

€37.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Housing Pipe Mercedes W204 W212 OM642 Thermostat Flange A6422001156

Part no. A6422001156

Thermostat Housing Pipe Mercedes W204 W212 OM642 Thermostat Flange A6422001156

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W204 C63 AMG M156 Petrol Thermostat Coolant Housing A1562030475

Part no. A1562030475

Mercedes W204 C63 AMG M156 Petrol Thermostat Coolant Housing A1562030475

€104.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes X253 OM651 Coolant Thermostat Housing Unit Diesel A6512001300

Part no. A6512001300

Mercedes X253 OM651 Coolant Thermostat Housing Unit Diesel A6512001300

€28.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W204 W211 Thermostat Water Coolant Pump OM646 Diesel Engine A6462000015

Part no. A6462000015

Mercedes W204 W211 Thermostat Water Coolant Pump OM646 Diesel Engine A6462000015

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W169 W245 OM640 Diesel Thermostat Coolant Housing A6402000515

Part no. A6402000515

Mercedes W169 W245 OM640 Diesel Thermostat Coolant Housing A6402000515

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W176 W246 OM607 Coolant Thermostat Housing Cooling Unit A6072000215

Part no. A6072000215

Mercedes W176 W246 OM607 Coolant Thermostat Housing Cooling Unit A6072000215

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes Citan W415 OM607 Renault Megane III 1.5 dCi Thermostat A6072000415

Part no. A6072000415-1

Mercedes Citan W415 OM607 Renault Megane III 1.5 dCi Thermostat A6072000415

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W164 OM642 Diesel Thermostat Coolant Housing Cooling Unit A6422000215

Part no. A6422000215

Mercedes W164 OM642 Diesel Thermostat Coolant Housing Cooling Unit A6422000215

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes C140 M119 Coolant Thermostat Housing Petrol A1192030175

Part no. A1192000015

Mercedes C140 M119 Coolant Thermostat Housing Petrol A1192030175

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Mercedes W177 OM608 Thermostat Coolant Unit Housing A6082000015

Part no. A6082000015-1

Thermostat Mercedes W177 OM608 Thermostat Coolant Unit Housing A6082000015

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Housing Mercedes W169 W245 M266 Petrol Coolant A2662030675

Part no. A2662030675

Thermostat Housing Mercedes W169 W245 M266 Petrol Coolant A2662030675

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Mercedes Vito W639 Diesel OM642 Thermostat Flange A6422002815

Part no. A6422002815

Thermostat Mercedes Vito W639 Diesel OM642 Thermostat Flange A6422002815

€32.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W205 W213 63 AMG Water Pump Thermostat Housing V8 M177 A1772000000

Part no. A1772008801-1

Mercedes W205 W213 63 AMG Water Pump Thermostat Housing V8 M177 A1772000000

€237.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W177 Thermostat Coolant Housing Coupling Pipe Hose A6082000700

Part no. A6082000700-1

Mercedes W177 Thermostat Coolant Housing Coupling Pipe Hose A6082000700

€28.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes-Benz W207 W212 W221 OM642 Engine Belt Tensioner Bracket A6422340539

Part no. A6422340539

Mercedes-Benz W207 W212 W221 OM642 Engine Belt Tensioner Bracket A6422340539

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes Sprinter W906 OM651 Coolant Thermostat Housing A6512000615

Part no. A6512000615

Mercedes Sprinter W906 OM651 Coolant Thermostat Housing A6512000615

€32.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes Sprinter W906 OM651 Diesel Engine Coolant Water Pump Line A6512000151

Part no. A6512000151

Mercedes Sprinter W906 OM651 Diesel Engine Coolant Water Pump Line A6512000151

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes CLS C216 Thermostat Pipe Coolant Hose Line CL 63 AMG  A2782001700

Part no. A2782001700

Mercedes CLS C216 Thermostat Pipe Coolant Hose Line CL 63 AMG A2782001700

€113.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W205 C43 4matic Thermostat Housing Coolant Unit A2762000315

Part no. A2762000315

Mercedes W205 C43 4matic Thermostat Housing Coolant Unit A2762000315

€70.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes Vito W639 Diesel OM646 Coolant Water Thermostat A6112031975

Part no. A6112000715

Mercedes Vito W639 Diesel OM646 Coolant Water Thermostat A6112031975

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W177 Water Coolant Thermostat Housing M282 A2822036500

Part no. A2822036500

Mercedes W177 Water Coolant Thermostat Housing M282 A2822036500

€118.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W176 OM607 Diesel Coolant Thermostat Cooling Unit 110609813R

Part no. A6072000315

Mercedes W176 OM607 Diesel Coolant Thermostat Cooling Unit 110609813R

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W164 Thermostat Oil Cooler Housing Diesel A1645010265

Part no. A1645010265

Mercedes W164 Thermostat Oil Cooler Housing Diesel A1645010265

€56.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W910 OM651 Diesel Coolant Thermostat Housing Unit A6512001100

Part no. A6512001100

Mercedes W910 OM651 Diesel Coolant Thermostat Housing Unit A6512001100

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W208 W209 W220 Water Pump Thermostat Housing A1122030275

Part no. A1122030275

Mercedes W208 W209 W220 Water Pump Thermostat Housing A1122030275

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Housing Mercedes W176 C117 OM651 Coolant Unit Mount A6512000558

Part no. A6512000558

Thermostat Housing Mercedes W176 C117 OM651 Coolant Unit Mount A6512000558

€28.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes C W203 OM646 Diesel Engine Cooling Thermostat Housing A6462001115

Part no. A6462001115

Mercedes C W203 OM646 Diesel Engine Cooling Thermostat Housing A6462001115

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W168 OM668 Diesel Thermostat Coolant Housing A6682030275

Part no. A6682030275

Mercedes W168 OM668 Diesel Thermostat Coolant Housing A6682030275

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W176 W246 OM607 Coolant Thermostat Housing Cooling Unit A6072000415

Part no. A6072000415

Mercedes W176 W246 OM607 Coolant Thermostat Housing Cooling Unit A6072000415

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W205 274920 Engine Coolant Thermostat Petrol Housing Unit A2742000215

Part no. A2742000215-1

Mercedes W205 274920 Engine Coolant Thermostat Petrol Housing Unit A2742000215

€94.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W205 Engine Coolant Thermostat Temp Sensor A6262000115

Part no. A6262000115

Mercedes W205 Engine Coolant Thermostat Temp Sensor A6262000115

€28.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Pipe Mercedes W204 M271 Petrol Flange Hose Line Coolant A2712030282

Part no. A2712030282

Thermostat Pipe Mercedes W204 M271 Petrol Flange Hose Line Coolant A2712030282

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W168 M166 Thermostat Coolant Housing A1662030275

Part no. A1662030275

Mercedes W168 M166 Thermostat Coolant Housing A1662030275

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W205 Thermostat Housing M264 Petrol Cooling Unit Pump A2642001501

Part no. A2642001501

Mercedes W205 Thermostat Housing M264 Petrol Cooling Unit Pump A2642001501

€142.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Pipe Mercedes W205 Engine Coolant Hose Line Tube Pipe A2742000215

Part no. A2742000215-2

Thermostat Pipe Mercedes W205 Engine Coolant Hose Line Tube Pipe A2742000215

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W177 M260 Petrol Termostat Housing A2602000900

Part no. A2602000900

Mercedes W177 M260 Petrol Termostat Housing A2602000900

€89.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W164 OM642 Diesel Thermostat Coolant Housing Cooling Unit A6422000215

Part no. A6422000215-1

Mercedes W164 OM642 Diesel Thermostat Coolant Housing Cooling Unit A6422000215

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W204 W205 W212 W213 M274 Petrol Coolant Thermostat Housing A2742000615

Part no. A2742000615-1

Mercedes W204 W205 W212 W213 M274 Petrol Coolant Thermostat Housing A2742000615

€37.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes Vito W447 Engine Cooling Thermostat Water Coolant Pipe OM622 289355520R

Part no. 289355520R

Mercedes Vito W447 Engine Cooling Thermostat Water Coolant Pipe OM622 289355520R

€66.95

Free delivery: Jul 23 – 24

If paid before 14:00

Engine Cooling Thermostat Mercedes W169 W245 M266 Petrol A2662030475

Part no. A2662030475

Engine Cooling Thermostat Mercedes W169 W245 M266 Petrol A2662030475

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes-Benz C E W203 W210 OM611 OM612 Coolant Thermostat Housing A6112000615

Part no. A6112000615

Mercedes-Benz C E W203 W210 OM611 OM612 Coolant Thermostat Housing A6112000615

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W204 Diesel OM651 Engine Coolant Thermostat Temp Sensor A6512002800

Part no. A6512002800

Mercedes W204 Diesel OM651 Engine Coolant Thermostat Temp Sensor A6512002800

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes Sprinter W906 Coolant Thermostat Housing Cooling Unit A6462001215

Part no. A6462001215

Mercedes Sprinter W906 Coolant Thermostat Housing Cooling Unit A6462001215

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W204 W209 M272 Engine Coolant Thermostat Cooling Housing A2722000115

Part no. A2722000415

Mercedes W204 W209 M272 Engine Coolant Thermostat Cooling Housing A2722000115

€23.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes C140 CL420 M119 Water Coolant Thermostat Housing Cover A1192011530

Part no. A1192011530

Mercedes C140 CL420 M119 Water Coolant Thermostat Housing Cover A1192011530

€132.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W415 109CDI Diesel Engine Cooling Thermostat Housing 170741R

Part no. 170741R

Mercedes W415 109CDI Diesel Engine Cooling Thermostat Housing 170741R

€28.95

Free delivery: Jul 23 – 24

If paid before 14:00

Mercedes W164 W212 C216 W221 W906 Thermostat Petrol Engine A2722000515

Part no. A2722000515

Mercedes W164 W212 C216 W221 W906 Thermostat Petrol Engine A2722000515

€28.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Mercedes W211 Petrol Engine M272 Coolant Thermostat A2722000015

Part no. A2722000015

Thermostat Mercedes W211 Petrol Engine M272 Coolant Thermostat A2722000015

€37.95

Free delivery: Jul 23 – 24

If paid before 14:00

Thermostat Housing Mercedes W204 W207 W212 OM651 Coolant Unit Cover A6512001056

Part no. A6512001056

Thermostat Housing Mercedes W204 W207 W212 OM651 Coolant Unit Cover A6512001056

Product currently unavailable

Mercedes W204 W212 Coolant Thermostat Cooling Unit OM651 Diesel A6512001715

Part no. A6512001715

Mercedes W204 W212 Coolant Thermostat Cooling Unit OM651 Diesel A6512001715

Product currently unavailable

Mercedes W204 Engine Coolant Water Pump Pipe Line OM651 Diesel A6512001651

Part no. A6512001651

Mercedes W204 Engine Coolant Water Pump Pipe Line OM651 Diesel A6512001651

Product currently unavailable

Mercedes Sprinter W906 OM651 Diesel Coolant Thermostat Cooling Unit A6512001500

Part no. A6512001500

Mercedes Sprinter W906 OM651 Diesel Coolant Thermostat Cooling Unit A6512001500

Product currently unavailable

Coolant Pump Stub Mercedes Vito W639 Water Pump OM646 Diesel A6462030031

Part no. A6462030031

Coolant Pump Stub Mercedes Vito W639 Water Pump OM646 Diesel A6462030031

Product currently unavailable

Mercedes W213 W222 OM656 Diesel Water Coolant Thermostat Housing A6562000015

Part no. A6562002200

Mercedes W213 W222 OM656 Diesel Water Coolant Thermostat Housing A6562000015

Product currently unavailable

Thermostat Housing Mercedes W202 W203 W210 Petrol M111 Coolant Tube  A1112030573

Part no. A1112001303-2

Thermostat Housing Mercedes W202 W203 W210 Petrol M111 Coolant Tube A1112030573

Product currently unavailable

Mercedes W169 W245 M266 Coolant Thermostat Housing Cooling Unit A2662030575

Part no. A2662030775

Mercedes W169 W245 M266 Coolant Thermostat Housing Cooling Unit A2662030575

Product currently unavailable

Mercedes W204 Diesel OM651 Engine Coolant Thermostat Temp Sensor A6512002800

Part no. A6512002800-1

Mercedes W204 Diesel OM651 Engine Coolant Thermostat Temp Sensor A6512002800

Product currently unavailable

Mercedes W177 W247 M260 Petrol AMG Thermostat Coolant Housing A2602002600

Part no. A2602002600

Mercedes W177 W247 M260 Petrol AMG Thermostat Coolant Housing A2602002600

Product currently unavailable

Mercedes X164 OM629 Thermostat A6292000315

Part no. A6292000315

Mercedes X164 OM629 Thermostat A6292000315

Product currently unavailable

Mercedes W212 W221 W204 Thermostat Coolant Housing Cooling Pipe A2762000515

Part no. A2762000515

Mercedes W212 W221 W204 Thermostat Coolant Housing Cooling Pipe A2762000515

Product currently unavailable

Thermostat Mercedes W205 X253 W212 Petrol M274 Coolant Thermostat A2742000615

Part no. A2742000615

Thermostat Mercedes W205 X253 W212 Petrol M274 Coolant Thermostat A2742000615

Product currently unavailable

Mercedes W169 W245 OM640 Coolant Thermostat Housing Cooling Unit A6402000715

Part no. A6402000715

Mercedes W169 W245 OM640 Coolant Thermostat Housing Cooling Unit A6402000715

Product currently unavailable

Mercedes-Benz Vito W639 Diesel OM646 Coolant Water Thermostat A6112000715

Part no. A6112000715-1

Mercedes-Benz Vito W639 Diesel OM646 Coolant Water Thermostat A6112000715

Product currently unavailable

Mercedes-Benz C E W202 W203 W210 M111 Coolant Thermostat Housing A1112030473

Part no. A1112001303

Mercedes-Benz C E W202 W203 W210 M111 Coolant Thermostat Housing A1112030473

Product currently unavailable

Mercedes W202 W203 W210 M111 Coolant Thermostat Housing A1112031075

Part no. A1112031075

Mercedes W202 W203 W210 M111 Coolant Thermostat Housing A1112031075

Product currently unavailable

Mercedes W177 Thermostat Coolant Housing Cooling Pipe A6082000700

Part no. A6082000700

Mercedes W177 Thermostat Coolant Housing Cooling Pipe A6082000700

Product currently unavailable

Mercedes W176 W246 Coolant Thermostat Cooling Unit OM651 Diesel A6512000715

Part no. A6512000715

Mercedes W176 W246 Coolant Thermostat Cooling Unit OM651 Diesel A6512000715

Product currently unavailable

Thermostat Mercedes W177 OM608 Thermostat Coolant Unit Housing A6082000015

Part no. A6082000015

Thermostat Mercedes W177 OM608 Thermostat Coolant Unit Housing A6082000015

Product currently unavailable

Thermostat Mercedes ML W163 Diesel OM612 Thermostat Housing A6122030275

Part no. A6122030275

Thermostat Mercedes ML W163 Diesel OM612 Thermostat Housing A6122030275

Product currently unavailable

Thermostat Housing Mercedes C117 W176 W246 Petrol M270 A2702000615

Part no. A2702000615-1

Thermostat Housing Mercedes C117 W176 W246 Petrol M270 A2702000615

Product currently unavailable

Mercedes W204 W212 OM651 Diesel Coolant Thermostat Cooling Unit A6512001715

Part no. A6512001715-1

Mercedes W204 W212 OM651 Diesel Coolant Thermostat Cooling Unit A6512001715

Product currently unavailable

BMW G20 G21 G30 G31 G32 Thermostat Coolant Housing Cooling Cooler Pipe 8581627

Part no. 8581627-1

BMW G20 G21 G30 G31 G32 Thermostat Coolant Housing Cooling Cooler Pipe 8581627

Product currently unavailable

Mercedes-Benz C-Class W203 C 180 200 K 230 M111 Coolant Thermostat A1112030975

Part no. A1112001715

Mercedes-Benz C-Class W203 C 180 200 K 230 M111 Coolant Thermostat A1112030975

Product currently unavailable

Mercedes W204 M271 Coolant Thermostat With Housing Unit A2712000115

Part no. A2712000115

Mercedes W204 M271 Coolant Thermostat With Housing Unit A2712000115

Product currently unavailable

Mercedes W202 W203 W210 M111 Coolant Thermostat Housing A1112030573

Part no. A1112001303-1

Mercedes W202 W203 W210 M111 Coolant Thermostat Housing A1112030573

Product currently unavailable

Mercedes-Benz W164 W207 W212 OM642 Thermostat Coolant Housing Valve A6422002315

Part no. A6422002315

Mercedes-Benz W164 W207 W212 OM642 Thermostat Coolant Housing Valve A6422002315

Product currently unavailable

Mercedes W903 Sprinter Coolant Thermostat Housing Flange R6032030474

Part no. R6032030474

Mercedes W903 Sprinter Coolant Thermostat Housing Flange R6032030474

Product currently unavailable

Thermostat Pipe Mercedes W205 Petrol Hose Line Coolant Housing A2742000215

Part no. A2742000215

Thermostat Pipe Mercedes W205 Petrol Hose Line Coolant Housing A2742000215

Product currently unavailable

Mercedes-Benz ML W163 OM612 Diesel Coolant Thermostat Housing A6122000015

Part no. A6122000015

Mercedes-Benz ML W163 OM612 Diesel Coolant Thermostat Housing A6122000015

Product currently unavailable

Mercedes W204 Diesel OM651 Engine Coolant Thermostat Temp Sensor A6512002800

Part no. A6512002800-2

Mercedes W204 Diesel OM651 Engine Coolant Thermostat Temp Sensor A6512002800

Product currently unavailable

Thermostats and housings in the engine cooling system – reliable operation in all conditions

Thermostats and housings in the engine cooling system – reliable operation in all conditions

How do thermostats work and what are the housings in cooling systems made of?

Thermostats and housings are key components of the cooling system, responsible for controlling coolant flow and maintaining the engine's optimal operating temperature. Their efficiency ensures engine performance, reduced fuel consumption, and protection against overheating. In the Global Parts automotive store, you will find a wide selection of used car parts, including thermostats and housings, ideal for brands such as BMW, Audi, Mercedes, Volkswagen, Mini, and others.

Definition and operating principle of a thermostat

A thermostat is a thermal valve that opens at a strictly defined temperature (usually between 85°C and 95°C) and allows coolant to flow to the radiator. In the case of BMW M57 engines used in BMW E60 models, the popular TH580 thermostat begins to open at 88°C, ensuring an ideal balance between rapid engine warm-up and maintaining the optimal operating temperature. In Audi A4 B8 models, a typical thermostat opens slightly earlier – at 87°C, which results from the different characteristics of the cooling system.

Construction and materials of thermostat housings

Thermostat housings are most often manufactured from high-strength plastics or aluminum. Modern solutions combine these materials, ensuring lightness, corrosion resistance, and a perfect fit to the mounting socket. In premium class vehicles, such as BMW or Mercedes, components with silicone seals are also used, which maintain tightness even at pressures up to 1.5 bar.

What functions do thermostats and housings perform?

Thermostats and housings play a key role in regulating engine operating temperature:

  • Coolant flow regulation – the thermostat opens and closes the coolant circuit depending on the engine temperature.
  • Faster engine warm-up – the thermostat keeps the coolant in the engine until the optimal temperature is reached, which improves engine efficiency, especially on cold days.
  • Overheating protection – a functional thermostat prevents excessive engine temperature rise by directing coolant to the radiator.
  • Thermostat housings – ensure tightness and stable mounting of the thermostat within the cooling system.

Construction and purpose of thermostats and housings in the cooling system

Thermostats and housings in the cooling system are an assembly usually mounted near the engine, at the junction of the small and large coolant circuits. The thermostat is responsible for the moment the flow to the radiator opens, while the housing serves as a body with ports, a gasket seat, and mounting points to the engine block or hoses. Depending on the version, the component may work with temperature sensors and assemblies from the cooling system hoses and pipes category. When choosing products in this category, it is worth comparing the OEM number, interchangeable numbers, fuel type, and port layout.

Comparison of thermostat and housing variants

VariantConstructionWhat to check before purchaseCooperating elements
Thermostat onlyThermal insert with valve and sealOpening temperature, diameter, OEM number, socket compatibilitywater radiators, housing, coolant
Thermostat housingPlastic or aluminum body, ports, gasket seatMounting layout, number of outlets, presence of sensor socket, condition of portsThermostat, gasket, hoses, mounting clamps
Thermostat assembly with housingComplete unit ready for installationVIN compatibility, OEM part number, engine version and fuel typecooling system water pumps, temperature sensor, hoses

Advantages of a functional thermostat

A properly operating thermostat contributes to optimal engine performance, reducing fuel consumption by as much as 5–7%, and also lowers exhaust emissions. By maintaining a stable operating temperature, engine oil retains its lubricating properties, which translates into a longer engine lifespan.

Why is it worth taking care of thermostats and housings?

Wear or damage to thermostats and housings can lead to serious cooling system problems. Typical symptoms include:

  • Engine overheating – a damaged thermostat may not open the circuit, leading to an increase in engine temperature.
  • Slow warm-up – thermostat failure can cause continuous coolant flow, which extends the engine warm-up time.
  • Coolant leak – leaks in the thermostat housing can lead to fluid loss and a drop in coolant levels. At Global Parts, we offer used thermostats and housings that have undergone detailed quality tests, ensuring their durability and reliability.

Typical symptoms and possible causes of thermostat faults

SymptomPossible causeRecommended action
Engine overheatsThermostat does not openReplace thermostat
Engine warms up slowlyThermostat stuck in open positionInspect or replace
Coolant leakLeaking thermostat housingCheck gasket or replace housing
Temperature fluctuationsContaminated cooling systemReplace coolant, flush system

How to choose the right thermostats and housings?

When choosing thermostats and housings, pay attention to several key aspects:

  • Vehicle model fitment – every cooling system has its specific technical requirements. At Global Parts, you will find thermostats and housings perfectly matched to BMW, Audi, Mercedes, Volkswagen, Mini, and others.
  • Technical condition – used thermostats and housings should be free from mechanical damage and airtight to prevent leaks.
  • Opening temperature – ensure that the thermostat opens at the correct temperature recommended by the vehicle manufacturer.

Part selection by OEM, engine version, and equipment

The thermostat housing is a body that guides coolant between the engine, radiator, and hoses, so it must match not only the car model but also the engine unit version. When choosing a component like a Peugeot 207 thermostat housing, it is worth checking the number of ports, sensor position, mounting method, and gasket compatibility with the socket. This type of assembly is sometimes connected to tanks from the expansion tanks category, so in case of a leak, it is good to assess the entire circuit, not just one sub-assembly.

Compatibility and installation

The BMW E60 thermostat with an M57 engine requires a component marked TH580, which is also compatible with some versions of the BMW 530d and X5 E53. In turn, the A4 B8 thermostat fits 2.0 TDI and 1.8 TFSI units, and its replacement is relatively simple – just disconnect the intake hose, drain some coolant, and install the new thermostat with a new gasket.

Why choose used thermostats and housings?

Used car parts, such as thermostats and housings, are a practical solution that allows for savings while maintaining high quality. By choosing used thermostats and housings, you gain:

  • Lower costs – used components are significantly cheaper than new ones but offer equally high quality.
  • Ecology – recycling car parts supports environmental protection and reduces waste.
  • Wide selection – in our store, you will find thermostats and housings for the most popular car brands.

Practical installation tips and system inspection

The thermostat gasket is the element responsible for a tight connection between the housing and the engine or hose, and its condition has a direct impact on cooling system pressure. For parts such as a Mercedes W211 thermostat, before installation, it is worth comparing the OEM number, bolt layout, port diameter, and the presence of a sensor location. When completing a repair for a specific model, for example, Renault Master 3, it is also good to verify hose routing, access for bleeding, and compatibility with the fuel type. A helpful diagnostic supplement is the article Engine cooling system – overheating, repair, and used radiators, which describes the relationships between engine operating temperature and the condition of the entire system.

How to take care of thermostats and housings?

To ensure thermostats and housings work reliably for a long time, it is worth following a few rules:

  • Regularly check the condition of the thermostat and housing, especially if you notice problems with engine operating temperature.
  • Replace coolant according to the manufacturer's recommendations to prevent scale and sediment buildup in the system.
  • Monitor coolant levels – a sudden drop may indicate a leak in the thermostat housing.
  • If replacement is necessary, at Global Parts you will find suitable used auto parts that will restore full functionality to your cooling system.

Practical tips

During the installation of a new thermostat, always replace the gasket and check that the cooling hoses are clean and unobstructed. For the BMW E60 or Audi A4 B8, it is also recommended to bleed the system after replacement to prevent air bubbles, which can disrupt fluid circulation.

FAQ

QuestionAnswer
What is the construction and purpose of thermostats and housings in the cooling system?Thermostats and housings in the cooling system are an assembly responsible for directing coolant flow between the engine and the radiator. A typical set consists of a thermostatic insert, a housing body, a gasket, and connection ports. This element is located in the engine compartment and is mounted in the location provided by the manufacturer for the given cooling circuit.
What are thermostats and housings in the cooling system used for?Thermostats and housings are used to maintain the proper operating temperature of the engine unit and to control the moment of fluid flow to the radiator. A functional thermostat accelerates reaching operating temperature, and a tight housing prevents fluid loss. Without these elements, the engine may run too cold or overheat, which affects fuel consumption, lubrication, and equipment durability.
What is the construction and function of a thermostat gasket?A thermostat gasket is a sealing element mounted between the housing and the contact surface in the cooling system. Its task is to maintain tightness during changes in temperature and operating pressure. In practice, one must pay attention to the gasket material, its profile, and compatibility with the specific body and OEM number.
How to choose a thermostat or housing for a specific car?The safest way is to compare the OEM part number, interchangeable numbers, engine version, fuel type, and the layout of ports and mounts. In many cars, the presence of a temperature sensor and the type of seal also matter. When selecting, it is worth checking compatibility by VIN and comparing photos of the element with the removed part.
What symptoms indicate a problem with a thermostat or housing?The most common symptoms are engine overheating, slow warm-up, fluctuations in temperature readings, and coolant leaks around the housing. Sometimes, weaker interior heating or traces of dried fluid near the ports also appear. Such symptoms should be assessed together with the condition of the hoses, gasket, and fluid level.
What does the proper installation of a thermostat and housing involve?Installation involves cleaning the contact surfaces, installing the correct gasket, and securing the part without stressing the hoses. After replacement, the coolant must be topped up and the system bled according to the procedure for the specific car version. It is also worth checking for leaks after the engine has warmed up and verifying that the operating temperature returns to stable values.

Summary: thermostats and housings in the cooling system at the Global Parts automotive store

Thermostats and housings are key components of the cooling system that ensure optimal engine operating temperature and protect against overheating. In the Global Parts offer, you will find used parts matched to many models and engine versions of brands such as Mercedes, BMW, Audi, and others. When choosing, it is worth comparing the OEM number, interchangeable numbers, fuel type, and housing construction so that the fitment to the mounting location is correct. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to visit our automotive blog.

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