12:53Specifications
- Brake Disc Thickness
- 24 mm
- Centering Diameter
- 79 mm
- Height
- 74 mm
- Minimum thickness
- 22.4 mm
- Outer Diameter
- 345 mm
- Brake Disc Type
- Externally Vented
- Machining
- High-carbon
- Surface
- Coated
- Bolt Hole Circle Ø
- 120
- Hole Arrangement/Number
- 05/06
- Supplementary Article/Supplementary Info 2
- without wheel hub
- Weight
- 9.8
Vehicle Manufacturers
BMW(4 items)
BMW
34 21 6 765 889
BMW
34 21 6 864 054
BMW
6 765 889
BMW
6864054
Other brands compatible with the same OE
14 total
A.B.S.
17804
Brake disc
ATE
24.0124-0213.1
Brake disc
BLUE PRINT
ADB114394
Brake disc
BOSCH
0 986 479 440
Brake disc
FEBI BILSTEIN
31723
Brake disc
HELLA PAGID
8DD 355 122-251
Brake disc
MEYLE
315 523 0052
Brake disc
MEYLE
315 523 0052/PD
Brake disc
MINTEX
MDC2639
Brake disc
QUARO
QD1388HC
Brake disc
SWAG
20 93 1723
Brake disc
TEXTAR
92155005
Brake disc
TRW
DF6476S
Brake disc
VAICO
V20-80071
Brake disc
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Watch maintenance and replacement tutorials on YouTube.
12:53
5:57
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 8DD 355 122-251 have compatible (OE) part numbers?
Yes — it is linked to 4 OE-compatible part number(s), shown in the compatible parts section above.