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HELLA

8DD 355 104-821

Brake disc

Specifications

Brake Disc Thickness
10 mm
Centering Diameter
75 mm
Height
83.2 mm
Minimum thickness
8.4 mm
Outer Diameter
272 mm
Brake Disc Type
solid
Surface
Coated
Bolt Hole Circle Ø
120
Hole Arrangement/Number
05/06
Supplementary Article/Supplementary Info 2
without wheel hub
Weight
4.6

Vehicle Manufacturers

BMW(6 items)

BMW

1 163 845

BMW

1 164 399

BMW

34 21 1 163 845

BMW

34 21 1 164 399

BMW

34 21 6 794 298

BMW

6 794 298

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

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 8DD 355 104-821 have compatible (OE) part numbers?

Yes — it is linked to 6 OE-compatible part number(s), shown in the compatible parts section above.

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