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HELLA

8DD 355 109-921

Brake disc

Specifications

Brake Disc Thickness
30 mm
Centering Diameter
79 mm
Height
77.2 mm
Inner Diameter
165 mm
Minimum thickness
28.4 mm
Outer Diameter
324 mm
Brake Disc Type
internally vented
Surface
Coated
Bolt Hole Circle Ø
120
Hole Arrangement/Number
05/06
Wheel Bolt Bore Diameter
14.7
Supplementary Article/Supplementary Info 2
without wheel hub
Weight
10

Vehicle Manufacturers

BMW(8 items)

BMW

34 11 6 753 221

BMW

34 11 6 767 269

BMW

34 11 6 864 905

BMW

34 11 6 864 906

BMW

6 753 221

BMW

6 767 269

BMW

6 864 905

BMW

6 864 906

BMW (BRILLIANCE)(8 items)

BMW (BRILLIANCE)

34 11 6 753 221

BMW (BRILLIANCE)

34 11 6 767 269

BMW (BRILLIANCE)

34 11 6 864 905

BMW (BRILLIANCE)

34 11 6 864 906

BMW (BRILLIANCE)

6 753 221

BMW (BRILLIANCE)

6 767 269

BMW (BRILLIANCE)

6 864 905

BMW (BRILLIANCE)

6 864 906

Featured videos

Watch maintenance and replacement tutorials on YouTube.

12:32

CDL Air Brakes Test 2024 (MOST Common Questions and Answers)

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 355 109-921 have compatible (OE) part numbers?

Yes — it is linked to 16 OE-compatible part number(s), shown in the compatible parts section above.

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