Starter BMW G20 G21 G30 G31 G01 Engine Starter Motor 8671504

Visual condition of the part

The product shows signs of use visible in the photos.

Starter BMW G20 G21 G30 G31 G01 Engine Starter Motor is an original component from the Starters group, designed for use in modern BMW 3, 5, and X3 series models. The product comes from dismantling, which allows for combining an attractive price with the preservation of factory specifications and the solid build quality characteristic of the BMW brand and the manufacturer Valeo.

Specifications and technical data

• SKU: 8671504
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8671504
• Substitutable numbers: 8671504, 12418671504
• Category: Starter Motors

Application and compatibility

The presented starter is intended for BMW G20 and G21 series vehicles (mid-size segment), G30 and G31 (executive segment), and G01 (mid-size SUV). This means it has been structurally designed to meet the requirements of modern BMW powertrains, taking into account high starting loads, frequent start cycles, and operation in varied operating conditions.

Thanks to maintaining OEM standards, the Valeo starter works with the factory electrical system, engine control unit, and onboard systems, allowing for seamless integration with the vehicle without the need for wiring modifications or additional adapters.

Construction and functional parameters

The Valeo starter used in BMW G20, G21, G30, G31, and G01 models is based on a classic electromagnetic design with a built-in solenoid, gear reduction, and an integrated one-way clutch. This architecture ensures:

• stable torque transmission to the flywheel ring gear,
• controlled extension and retraction of the pinion during startup,
• adequate resistance to mechanical and thermal overloads.

The starter is optimized for quickly reaching the rotational speed necessary for reliable engine starting, while simultaneously limiting current draw from the battery. As a result, it supports the proper operation of the starting system even under low-voltage conditions, e.g., at low ambient temperatures.

Benefits of using an original BMW Valeo starter

Using a starter sourced from the factory supply line of BMW and Valeo brings a number of practical advantages:

• Factory fit – compatibility with mounts, housing geometry, and the position of electrical connections is maintained, which facilitates installation.
• Consistency with vehicle electronics – the starter works with the original engine control unit and protection system, minimizing the risk of diagnostic errors.
• Stable starting parameters – the design intended by the vehicle manufacturer ensures repeatable engine startup under typical operating conditions.
• Reduced risk of incompatibility compared to aftermarket replacements of uncertain origin.

Condition, verification, and preparation for installation

The starter is in used condition, meaning it comes from a previously operated BMW vehicle. Such components are frequently chosen as a service solution because they allow for maintaining the original starting system specification while reducing repair costs. Before installation, it is recommended to perform a standard check of the vehicle's electrical system (condition of the battery, ground cables, and power cables) to ensure proper operating conditions for the component.

To maintain high reliability, it is worth entrusting the installation to a workshop with experience in modern BMW models, which will facilitate proper tightening of connections, cable routing, and any necessary computer diagnostics after replacement.

Starting system expansion and BMW Starters offer

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 hardware, or compatible starting system components, check the available parts in the BMW Starters category.

If you are interested in a broader context of performance and structural differences between sports versions and standard ones, it is worth reading the analysis regarding powertrains, brakes, and chassis in RS models – details can be found in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how the selection of appropriate components affects the character of the car.