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TRW

DF3959S

Brake disc

Specifications

Brake Disc Thickness
28 mm
Centering Diameter
63.5 mm
Height
48.1 mm
Minimum thickness
25.5 mm
Outer Diameter
322 mm
Brake Disc Type
Vented
Rim Hole Number
5
Thread Size
15,8
Bolt Hole Circle Ø
108
Colour
Black
Surface
Painted
Machining
High-carbon
Test Mark
E1 90R-02 C0176/0655
Weight
10.622 kg

Vehicle Manufacturers

VOLVO(5 items)

VOLVO

31423724

VOLVO

31665446

VOLVO

32233185

VOLVO

32254356

VOLVO

32300122

VOLVO ASIA(1 items)

VOLVO ASIA

31665446

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 DF3959S 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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