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DELPHI

BG4172C

Brake disc

Specifications

Brake Disc Thickness
24 mm
Centering Diameter
79 mm
Height
73.7 mm
Minimum thickness
22.4 mm
Outer Diameter
312 mm
Brake Disc Type
Vented
Number of Holes
5
Test Mark
E1 90R-02C0277/1424
Surface
Coated
Weight
13.778 kg

Vehicle Manufacturers

BMW(5 items)

BMW

3411 6774 875

BMW

3411 6792 219

BMW

34116855006

BMW

34118848417

BMW

34118848418

BMW (BRILLIANCE)(3 items)

BMW (BRILLIANCE)

34116774875

BMW (BRILLIANCE)

34116792219

BMW (BRILLIANCE)

34116855006

Featured videos

Watch maintenance and replacement tutorials on YouTube.

9:44

CDL Class A FULL In Cab Inspection and Air Brake Test 2023 - Pass Your CDL Trucking Road Test

Driving Academy | CDL Truck Driving School

Watch on YouTube
10:20

Air Brakes Explained Simply :: Service, Parking and Emergency Brakes One & the Same

Smart Drive Test

Watch on YouTube

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 BG4172C have compatible (OE) part numbers?

Yes — it is linked to 8 OE-compatible part number(s), shown in the compatible parts section above.

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