BMW F20 F21 F30 F31 LCI 116i 118i 318i B38 Petrol Engine Starter Motor 8570849

BMW F20 F21 F30 F31 LCI 116i 118i 318i B38 Petrol Engine Starter Motor is an original component from the Starters group, designed for B38 series petrol engines in BMW F20 LCI 116i and 118i models. This used OEM component ensures proper engine starting parameters while maintaining factory assembly standards and reliability.

Specifications and technical data

• SKU: 8570849
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8570849
• Substitutable numbers: 12418570849, 8570849
• Fuel type: Petrol
• Category: Starter Motors

Purpose and compatibility

The presented starter motor is designed to work with the B38 petrol engine in compact BMW 1 Series models after the facelift (F20 LCI) in 116i and 118i versions. Using an original component from the same powertrain family ensures compatibility with the factory electrical installation, control system, and the starting requirements of the engine.

Thanks to its OEM design, the starter works with the factory flywheel and power supply system, which reduces the risk of starting problems, improper engagement, or excessive vibrations during engine start-up.

Technical and functional characteristics

The starter motor is responsible for initiating the operation of the petrol engine by precisely transferring torque to the crankshaft. For B38 units, it is crucial to maintain appropriate starting dynamics so that the fuel injection and ignition systems can operate under optimal conditions. The original component ensures:

• proper engagement with the flywheel ring gear,
• stable operation across the full range of operating temperatures,
• consistency with the electrical parameters of the BMW F20 LCI onboard system,
• appropriate starting characteristics for the petrol engine.

A used OEM starter is a solution that allows you to maintain the correct operating parameters of the powertrain without the need to use replacements with uncertain specifications.

Benefits of using an original BMW starter motor

Using a starter dedicated to the BMW F20 LCI 116i/118i with a B38 engine provides a number of practical operational benefits:

• Factory fit – maintaining the original geometry and mounting points facilitates installation and minimizes the risk of leaks or stresses in the system.
• Consistency with vehicle electronics – proper cooperation with control modules and starting safety systems.
• Stable petrol engine start – appropriate rotational speed and starting torque adapted to the characteristics of the B38 unit.
• Reduction of the risk of improper engagement and excessive wear of the flywheel ring gear.

For users considering the choice between a new replacement and a used OEM component, a comparative article may be helpful: New vs. used part – a comparison of costs and quality, which discusses the differences in durability, cost-effectiveness, and component fitment.

Condition, origin, and practical application

The offered starter is a used OEM BMW component, which means it comes from the vehicle manufacturer's original production line. Such components are particularly valued by users who want to maintain consistency with the car's factory specifications while optimizing the costs of repairing the starting system.

The starter will work well both for a typical replacement of a worn-out component and for repairs resulting from starting problems, a drop in starting dynamics, or improper operation of the electrical system. Using an original component allows you to reduce diagnostic time and the risk of additional faults resulting from part mismatch.

Expanding repairs within the BMW starting system

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional starters, mounting elements, or related starting system components, check the available parts in the BMW Starters category.