12:32CDL Air Brakes Test 2024 (MOST Common Questions and Answers)
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Watch on YouTubeSpecifications
- Brake Disc Thickness
- 30 mm
- Centering Diameter
- 69 mm
- Height
- 62.5 mm
- Minimum thickness
- 28 mm
- Outer Diameter
- 318 mm
- Fitting Position
- Front Axle
- Bolt Hole Circle Ø
- 112
- Number of Holes
- 5
- Brake Disc Type
- perforated/vented
- Surface
- Zink flake coated
- Machining
- High-carbon
- Quality
- PREMIUM
- Required quantity
- 2
- Weight
- 9.905 kg
Vehicle Manufacturers
MERCEDES(2 items)
MERCEDES
000 421 21 12
MERCEDES
A 000 421 21 12
Other brands compatible with the same OE
10 total
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Parts in this category
Other parts in the same category.
About 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 083 521 1005/PD have compatible (OE) part numbers?
Yes — it is linked to 2 OE-compatible part number(s), shown in the compatible parts section above.