5:57Specifications
- Brake Disc Thickness
- 10 mm
- Centering Diameter
- 64 mm
- Height
- 44 mm
- Outer Diameter
- 259 mm
- Fitting Position
- Rear Axle
- Brake Disc Type
- solid
- Bolt Hole Circle Ø
- 100
- Number of Holes
- 4
- Surface
- Coated
- Weight
- 3.594 kg
Vehicle Manufacturers
BMW(2 items)
BMW
34 21 1 503 070
BMW
34 21 6 774 987
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5:57
12:53
12:32CDL Air Brakes Test 2024 (MOST Common Questions and Answers)
Driving Academy | CDL Truck Driving School
Watch on YouTubeAbout this part
A brake disc (rotor) is the metal disc that the brake pads clamp onto to slow the wheel.
When the pads press against the spinning disc, friction converts the vehicle's motion into heat, which the disc dissipates; commercial vehicle discs are large and heat-resistant for high loads and repeated braking.
Mounted at the wheel as part of a disc brake. Because braking is safety critical, discs and pads are inspected on schedule and replaced by axle set by a qualified technician.
Frequently asked questions
Does 103344 have compatible (OE) part numbers?
Yes — it is linked to 2 OE-compatible part number(s), shown in the compatible parts section above.