BMW Z4 E85 2.0i N46 150HP Bare Engine N46B20B New Timing 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 E85 2.0i N46 150HP Bare Engine N46B20B New Timing 49k miles, WARRANTY is a complete, used powertrain from the N46 family, designed for the petrol version of the Z4 E85. The unit features a modern four-cylinder design, optimized for efficiency and smooth operation, and is additionally equipped with a new timing chain kit, which significantly increases its operational value. This is a solution for users looking for a technically refined petrol engine for their BMW roadster.

Specifications and technical data

• SKU: 2150313-1
• 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 presented engine belongs to the N46 family, which consists of modern, petrol BMW units with a compact, four-cylinder design. The use of an inline four-cylinder layout provides a good balance between performance, weight, and fuel consumption, which translates into dynamic yet predictable handling in the lightweight Z4 E85 body. The engine code N46B20B is widely recognized in the service environment, which facilitates the selection of accessories, consumables, and service procedures.

The unit was designed to work with a petrol fuel system, ensuring linear power delivery and good throttle response. The design, based on proven BMW solutions, allows for precise tuning and seamless integration with the vehicle's factory electronics, provided the ECU and accessories are correctly matched to the specific car configuration.

New timing chain – a key operational advantage

A significant advantage of this unit is the new timing chain kit, which is of great importance for reliability and maintenance costs in N46 family engines. Replacing timing components is one of the more demanding service operations, so purchasing an engine with this task already completed reduces the risk of future, costly repairs and shortens the time required to prepare the car for the road.

The new timing chain contributes to stable engine operation across the entire rev range, improves valve timing precision, and reduces the risk of valve malfunction. For the user, this means smoother operation, easier cold starts, and more predictable engine behavior during dynamic driving.

Designed for the BMW Z4 E85 2.0i

The engine has been prepared for use in the BMW Z4 E85 2.0i model, which facilitates the installation process in vehicles factory-equipped with an N46 family unit. By maintaining structural compatibility with the manufacturer's original solution, it is possible to use factory mounting points, the stock cooling system, and the stock exhaust system, after appropriate adjustment of the accessories.

Such compatibility with a specific model allows for reduced adaptation work and shorter vehicle downtime in the workshop. For the Z4 E85 owner, this means a more predictable engine replacement process and easier cost control for the entire operation.

Condition, mileage, and future potential

The unit comes from the Engines category and is offered as a used item, which in practice means a favorable price-to-technical-capability ratio. The declared mileage allows for an assessment of the potential for further operation, provided proper maintenance is followed – regular oil and filter changes, as well as monitoring of systems cooperating with the engine.

A four-cylinder petrol engine, with proper maintenance, is characterized by good durability and predictable behavior over a long period of use. For workshops and individual users, this means the possibility of planning an engine replacement as an investment in continued, stable vehicle operation, without the need to incur the costs of purchasing a brand-new powertrain.

Vehicle integration and professional support

Before installation, it is recommended to verify the compatibility of the engine code and accessory configuration with the car's current equipment, which facilitates subsequent integration with the electronics and drivetrain. If you have any doubts regarding the choice of an engine or the cost-effectiveness of a repair, it is worth using expert knowledge – for example, an article describing typical problems with engines in the 3 Series, available at the link: Troublesome BMW E90 engines – a practical guide to problematic units. Although it concerns a different model, it allows for a better understanding of the specifics of BMW engine design and a conscious approach to the topic of replacement or repair.

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