BMW G20 G30 M Front Brake Caliper Sport Left N/S Brake Housing Carrier 44/348/36

Visual condition of the part

The product shows signs of use visible in the photos.

BMW G20 G30 M Front Brake Caliper Sport Left N/S Brake Housing Carrier is an original component from the Brake calipers and carriers group, designed for installation on the front axle on the driver's side. This solution is created for stable, repeatable braking in BMW vehicles equipped with a sport brake system.

Specifications and technical data

• SKU: 6891273-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6891273
• Substitutable numbers: 6891273, 34116891273, 6880303, 34116880303
• Location on the vehicle: Front, Left
• Part type: Brake Caliper
• Category: Calipers & Brackets

Application and technical purpose

This sport front left caliper is dedicated to BMW G20 and G30 series models with a factory M system, where precise pad guidance relative to the disc and resistance to thermal loads are crucial. Its placement on the front axle on the left side ensures proper cooperation with other brake system components and correct mounting geometry.

Thanks to the design intended by the vehicle manufacturer, the caliper maintains appropriate body rigidity, which limits deflection during intensive braking and promotes even pad pressure. This is particularly important in vehicles with higher weight and power, where the brake system operates at elevated temperatures.

Construction, carrier, and mounting compatibility

The presented item includes the caliper body and the brake housing carrier, which facilitates fitting to the steering knuckle and disc intended for the BMW sport brake system. The integrated carrier allows for stable pad guidance and proper positioning relative to the disc, minimizing the risk of uneven pad wear.

A solution of this type is designed as a component that works with factory brake lines, the master cylinder, and assistance systems (including stability control systems), ensuring the consistency of the entire system. For the user, this means a predictable brake pedal response and repeatable performance during daily use and dynamic driving.

Benefits of using an original sport caliper

Choosing an original front left sport caliper for the BMW G20 / G30 translates into a number of practical advantages:

• Factory fitment – maintained mounting geometry and proper cooperation with the discs and pads intended for the M system.
• Stable braking parameters – rigid body and carrier construction promotes even pad pressure against the disc.
• Consistency with safety systems – compatibility with factory traction control and stability control systems.
• Possibility of use in repairs and upgrades of the brake system in BMW G20 and G30 series vehicles with a sport system.

Condition, verification, and selection of a used caliper

The item comes from the used original BMW parts segment, which allows for combining a favorable cost with the preservation of factory construction and fitment. Before installation, a standard workshop inspection is recommended, covering the assessment of working surfaces, threads, mounting points, and potential replacement of consumables (seals, guide pins, mounting bolts) in accordance with the vehicle manufacturer's service procedures.

To better prepare for the purchase and installation of a used brake system component, it is worth using the practical tips included in the article: Second-hand brake system: how to safely choose discs, calipers, and ABS?. This is a helpful checklist for those who want to consciously select components in a store specializing in used parts.

Expanding BMW brake system upgrades

If you are planning a comprehensive repair or upgrade of the braking zone in your BMW and need other elements from the same group, such as additional calipers, carriers, or mounting brackets, check the available parts in the BMW Brake calipers and carriers category.