10:20Air Brakes Explained Simply :: Service, Parking and Emergency Brakes One & the Same
Smart Drive Test
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FEBI BILSTEIN
31724
Brake disc
Specifications
- Brake Disc Thickness
- 20 mm
- Centering Diameter
- 79 mm
- Minimum thickness
- 18.4 mm
- Outer Diameter
- 324 mm
- Thickness
- 65 mm
- Rim Hole Number
- 5
- Number of mounting bores
- 1
- Bolt Hole Circle Ø
- 120
- Surface
- Coated
- Brake Disc Type
- internally vented
- Fitting Position
- Rear Axle
- Weight
- 8.117 kg
Vehicle Manufacturers
BMW(2 items)
BMW
34 21 1 166 127
BMW
34 21 6 864 045
Other brands compatible with the same OE
15 total
A.B.S.
17452
Brake disc
ATE
24.0120-0178.1
Brake disc
BLUE PRINT
ADB1143103
Brake disc
BOSCH
0 986 479 004
Brake disc
FTE
9071139
Brake disc
FTE
9081195
Brake disc
HELLA
8DD 355 110-021
Brake disc
MEYLE
315 523 0045
Brake disc
MEYLE
315 523 0045/PD
Brake disc
NK
201578
Brake disc
NK
311578
Brake disc
SWAG
20 93 1724
Brake disc
TRISCAN
8120 11160C
Brake disc
TRW
DF4391
Brake disc
VALEO
197359
Brake disc
Featured videos
Watch maintenance and replacement tutorials on YouTube.
10:20
9:44CDL Class A FULL In Cab Inspection and Air Brake Test 2023 - Pass Your CDL Trucking Road Test
Driving Academy | CDL Truck Driving School
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12:53About 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 31724 have compatible (OE) part numbers?
Yes — it is linked to 2 OE-compatible part number(s), shown in the compatible parts section above.