BMW Z4 Series E85 2.0i N46 150HP Bare Engine N46B20B with 49k miles WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

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

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

BMW Z4 Series E85 2.0i N46 150HP Bare Engine N46B20B with 49k miles WARRANTY is a used, bare petrol engine block designed for Z4 E85 series models with the N46B20B unit. The offered engine comes from a vehicle with relatively low mileage, which helps maintain a reserve of durability and stable operating parameters. This is a solution for users looking for an original BMW engine while maintaining a favorable cost-to-quality ratio.

Specifications and technical data

• SKU: 2150313
• 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
• Engine code: N46B20B
• Mileage: 49 000

Technical characteristics of the N46B20B unit

The engine belongs to the N46 four-cylinder family, operating in an inline configuration and powered by petrol. The design of this unit was developed to combine reasonable power with good refinement and moderate fuel consumption. Four cylinders ensure balanced characteristics, and the modern N46 architecture allows for efficient power utilization across the entire rev range.

The version used in the BMW Z4 E85 offers a catalog power of 150 HP, which translates into dynamic acceleration and flexibility in everyday driving in a lightweight roadster. The unit works well with both manual and automatic transmissions, maintaining predictable throttle response and stable idle speed.

Application and compatibility

The offered bare engine is dedicated to the BMW Z4 E85 series in the 2.0i version with the N46B20B engine. Thanks to maintaining the manufacturer's original specifications, installation in place of the factory unit is straightforward for an experienced workshop and does not require structural modifications. The original engine architecture facilitates full compatibility with factory electronics, ancillaries, as well as the cooling and exhaust systems.

The unit's mileage is relatively low for a petrol engine of this generation, which favors further operation without the need for immediate major overhauls. This is a good choice when replacing a damaged engine after a mechanical failure, overheating, or seizure, when maintaining the original vehicle specification is a priority.

Benefits of choosing a used BMW engine

Purchasing a used OEM engine for the BMW Z4 E85 is often more cost-effective than an expensive repair of a heavily worn unit. Replacing the complete bare engine allows for reducing the vehicle's downtime in the workshop and limits the risk of subsequent faults resulting from partial repairs. The unit originating from original BMW production retains factory parameters and is better matched than random replacements of unknown origin.

If you want to better understand how to safely select a used engine, what to pay attention to when verifying its condition, and how to interpret OEM markings and engine codes, it is worth checking out our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. This is a practical supplement to your knowledge before making a purchasing decision.

Professional installation and selection based on technical data

To fully utilize the potential of this unit, installation in a specialized service center is recommended, which will ensure the correct transfer of ancillaries, proper bleeding of the cooling system, and the first start-up after replacement. Selecting the engine by the N46B20B code and catalog data minimizes the risk of incompatibility with the electrical harness and engine control unit.

Before installation, it is worth planning the replacement of consumables such as engine oil, oil filter, or coolant. Such an approach increases operational safety and allows you to start using the unit with a fresh service package, which is particularly important for used engines.

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 additional bare engines, blocks, or cylinder heads, check the available parts in the BMW Engines category.