BMW F15 F16 X5 E70 X6 E71 Brake Disc Ventilated Rear Left Right N/O/S 6868940

BMW E70 E71 F15 F16 Rear Brake Disc Left Right Rear 320X20 is an original part from the brake discs category, designed for installation on the rear axle, either left or right side. The product comes from the BMW offering, ensuring factory fitment to the braking system and proper cooperation with other vehicle components.

Specifications and technical data

• SKU: 6868940
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 34216868940
• Substitutable numbers: 34216868940, 6868940
• Location on the vehicle: Rear, Right, Left
• Category: Brake Disc Rotors

Intended Use and Compatibility

The presented rear brake disc has been designed for use in BMW models E70, E71, F15, and F16, where a disc with a diameter of 320 mm and a working thickness of 20 mm is required. The design is intended for operation on both the left and right sides of the rear axle, which simplifies selection and replacement within the same vehicle axle.

The placement on the vehicle covers the rear right and left sides, allowing the part to be used as a replacement for the original disc in case of wear or damage, while maintaining the correct geometry and operating parameters of the braking system.

Construction and Operating Parameters

The 320x20 brake disc has been constructed for stable operation under typical operating conditions of BMW SUVs. The appropriately selected working thickness ensures adequate thermal capacity, and the diameter is matched to the factory calipers and brake pads used in the mentioned vehicle generations.

The disc geometry complies with BMW's factory requirements, which translates to:

• correct seating on the wheel hub,
• proper positioning of the friction surfaces relative to the caliper,
• stable heat dissipation during braking.

Characteristics of Used Product

The disc is a used part, sourced from disassembly. This means it shows signs of previous use but retains functionality allowing for further use after a mechanic's inspection. For safety, it is recommended to check the working thickness, any axial runout, and the friction surfaces before installation.

When installing on one axle, it is recommended to replace both rear discs simultaneously to maintain even braking performance on the left and right sides of the vehicle.

Benefits of Using an Original BMW Disc

Using an original BMW rear brake disc with dimensions of 320x20 allows for the maintenance of the vehicle's factory braking characteristics. The main advantages include:

• Factory Fitment – compatibility with the braking system designed for models E70, E71, F15, and F16.
• Stable System Operation – proper cooperation with factory calipers and brake pads.
• Consistency with Other Components – maintaining the geometry and brake force distribution on the rear axle as intended by the manufacturer.

A disc selected in this way helps to reduce the risk of vibrations, uneven braking, and accelerated pad wear, provided correct installation and prior assessment of the technical condition.

Selection, Installation, and Additional Information

Before purchasing, it is advisable to verify the disc's compatibility with the specific engine and equipment version of the vehicle, using the OEM number and interchangeable numbers available in the technical specification. This facilitates unambiguous matching of the part to a particular BMW model and minimizes the risk of ordering errors.

To ensure proper operation of the braking system, installation by a qualified service center is recommended, following the manufacturer's procedures, including cleaning the hub, checking for runout, and correctly tightening the wheels. Disc replacement should always be accompanied by an assessment of the condition of the brake pads and lines.

If you are looking for other BMW brake discs suitable for different models of this brand, check out our dedicated category: BMW brake discs.

When selecting used braking system components, it is worth using practical tips. A detailed checklist can be found in the article: Used Braking System: How to Safely Choose Discs, Calipers, and ABS?, which guides you step-by-step on what to look for when purchasing such components.