Mercedes W166 Ignition Coil High Voltage M157 AMG Engine A2769060401 0221604067

Mercedes-Benz W166 Bosch Ignition Coil M157 AMG is an original ignition system component designed for gasoline engines, specifically engineered for AMG units. Thanks to its precise operating characteristics and adaptation to the demands of high-performance engines, it ensures a stable spark, reliable mixture ignition, and repeatable performance. This is a solution for users who expect proven technology and compatibility with factory Mercedes electronics.

Specifications and technical data

• SKU: A2769060401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2769060401
• Substitutable numbers: A2769060401, A 276 906 04 01, 0221604067, 0 221 604 067
• Fuel type: Petrol
• Part type: Ignition Coil
• Category: Ignition Coils

Purpose and Role in the Ignition System

The presented ignition coil belongs to the Ignition Coils category and works with a gasoline engine, where it is responsible for converting the low voltage from the vehicle's electrical system into the high voltage needed to generate a spark at the spark plug. In M157 AMG units, a correctly selected ignition coil is crucial for:

• stable engine operation across the entire RPM range,
• proper combustion of the fuel-air mixture,
• maintaining factory power and torque parameters,
• reducing misfires and associated ECU errors.

Bosch Technology and Mercedes-Benz Compatibility

The Bosch ignition coil designed for the M157 AMG unit has been developed with the specific requirements of high-performance gasoline engines in mind. The applied winding and insulation technology allows for operation under high thermal and electrical loads, typical of dynamic driving. Precise characteristics of primary current rise and fall times contribute to effective spark creation, which translates into better throttle response and engine smoothness.

Original compatibility with the Mercedes control system minimizes the risk of compatibility issues, such as OBD diagnostic errors, uneven idling, or power loss under high load.

Benefits of Using an Original Ignition Coil

In AMG gasoline engines, using the correct ignition coil directly impacts the durability of the powertrain and user comfort. Replacing a worn-out component with an original Bosch ignition coil dedicated to Mercedes allows for:

• reducing jerking and hesitation during acceleration,
• minimizing the risk of catalytic converter damage from unburnt fuel,
• maintaining correct exhaust emission values,
• easier engine starting in various temperature conditions.

For drivers who operate their vehicles dynamically, the repeatability of ignition parameters at high RPMs is particularly important, which this ignition coil provides thanks to its design adapted to the specifics of the M157 unit.

Condition, Verification, and Practical Application

This part is a used item from disassembly and is offered as such, allowing for economical repair of the ignition system while maintaining original manufacturer specifications. This type of ignition coil is suitable as a replacement for a damaged component or as a preventative part when symptoms such as misfires, rough cold running, or occasional ignition errors in the ECU memory occur.

Before installation, a standard service procedure is recommended, including checking the condition of the spark plugs, the electrical harness, and performing computer diagnostics to fully utilize the potential of a functional ignition coil and restore proper engine operation.

Expanding the Mercedes Ignition System

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional ignition coils, ignition control modules, or high-voltage wiring components, check the available parts in the Mercedes Ignition Coils category.

For drivers who are also considering improving driving ergonomics and comfort, an article describing the impact of interior equipment on the perceived quality of a car may be helpful – more information can be found in the material Interior Metamorphosis: How Branded Used Seats Improve Comfort and Car Value.