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HELLA

8DD 355 122-781

Brake disc

Specifications

Brake Disc Thickness
16 mm
Centering Diameter
122.5 mm
Height
25.6 mm
Inner Diameter
200 mm
Minimum thickness
13 mm
Outer Diameter
308 mm
Brake Disc Type
solid
Surface
Coated
Bolt Hole Circle Ø
150
Hole Arrangement/Number
05/05
Wheel Bolt Bore Diameter
12
Supplementary Article/Supplementary Info 2
without wheel hub
Weight
6.6

Vehicle Manufacturers

FORD(4 items)

FORD

1 815 599

FORD

2226519

FORD

BK312A315AB

FORD

KK312A315AA

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

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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 355 122-781 have compatible (OE) part numbers?

Yes — it is linked to 4 OE-compatible part number(s), shown in the compatible parts section above.

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