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HELLA

8DD 355 120-821

Brake disc

Specifications

Brake Disc Thickness
30 mm
Centering Diameter
79 mm
Height
73.2 mm
Inner Diameter
153.7 mm
Minimum thickness
28.4 mm
Outer Diameter
340 mm
Brake Disc Type
Drilled dimples
Machining
High-carbon
Surface
Coated
Bolt Hole Circle Ø
120
Hole Arrangement/Number
05/06
Wheel Bolt Bore Diameter
16.5
Supplementary Article/Supplementary Info 2
without wheel hub
Number of bolts/screws
1
Weight
10.1

Vehicle Manufacturers

BMW(3 items)

BMW

34 10 6 797 602

BMW

34 11 6 797 602

BMW

6797602

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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 355 120-821 have compatible (OE) part numbers?

Yes — it is linked to 3 OE-compatible part number(s), shown in the compatible parts section above.

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