BMW Z4 Series E85 2.0i N46 150HP Complete Engine N46B20B New Timing WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

BMW Z4 Series E85 2.0i N46 150HP Complete Engine N46B20B New Timing WARRANTY is a factory petrol unit prepared as a ready-to-install engine block for the Z4 E85 model with the 150 HP N46 engine. This is a solution for users who want to restore the full efficiency of the drivetrain in a technically correct and economical way, using an original BMW unit covered by a timing chain warranty.

Specifications and technical data

• SKU: 2150313-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2150313
• Substitutable numbers: 11002150313, 11002150316, 2150313, 2150316
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics of the N46B20B engine

The presented engine belongs to the family of four-cylinder BMW N46 petrol units used in the Z4 E85 2.0i model. The design, based on an inline 4-cylinder layout, ensures a good balance between operating refinement and ease of maintenance. The unit is adapted for petrol fuel, which allows for dynamic yet predictable power characteristics in typical road RPM ranges.

The engine offers a catalog power of 150 HP, which in the lightweight Z4 E85 roadster body translates into efficient acceleration and flexibility in daily use. The use of a new timing system covered by a warranty increases operational safety and reduces the risk of costly failures in the most critical component of the powertrain.

Scope of application and compatibility

The engine is intended for installation in the BMW Z4 Series E85 2.0i model with the N46B20B unit. By maintaining the original factory specifications, it serves as a direct replacement for damaged or worn units in this model, without the need for structural modifications in the engine bay.

The selection of the correct unit should always be confirmed based on the vehicle's VIN and catalog data, which helps avoid compatibility issues with accessories, wiring harnesses, and the engine control unit. Proper matching guarantees the preservation of factory operating parameters and correct interaction with the existing drivetrain.

Condition, mileage, and benefits of purchasing a used engine

The offered unit comes from the Engines category and is a used item, which allows for a significant reduction in repair costs compared to purchasing a new engine block. The declared mileage of the engine is relatively low for this generation of units, which, combined with the new timing system, translates into a favorable price-to-potential-service-life ratio.

Choosing a used OEM BMW engine is a solution that, in many cases, allows the car to be maintained in its original specification without the need to use replacements of uncertain origin. For users planning longer ownership of the Z4 E85, this is often the most technically and financially rational option.

If you want to better understand how to safely choose powertrain units from the secondary market, it is worth reading the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses, among other things, procedures for selection by VIN and OEM, as well as real cost differences.

Practical advantages of installation in the BMW Z4 E85

Using the BMW Z4 Series E85 2.0i N46 150HP Complete Engine N46B20B allows for the restoration of full drivetrain functionality without the need for complex conversions. The unit retains factory mounting points, works with original accessories, and is adapted to the standard cooling and exhaust system of this model.

In practice, this means shorter vehicle downtime in the workshop, a lower risk of electronics integration issues, and easier diagnostics in the future. For workshops specializing in the BMW brand, this is a well-known configuration, which further facilitates the installation process and subsequent maintenance.

BMW engines – expansion and modernization of the powertrain

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other components from the same group, such as blocks, cylinder heads, or complete powertrain units, check out the available parts in the BMW Engines category.