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NIPPARTS

J3303072

Brake disc

Specifications

Brake Disc Thickness
24 mm
Height
24 mm
Centering Diameter
93 mm
Inner Diameter
138 mm
Minimum thickness
22 mm
Outer Diameter
274 mm
Brake Disc Type
internally vented
Number of Holes
6
Bolt Hole Circle Ø
116
Hub Diameter
93
Wheel Hub Diameter
144
Surface
Coated
fulfils ECE standard
E1 90R-02C0064/0352
Fitting Position
Front Axle
Weight
6.136 kg

Vehicle Manufacturers

MAZDA(2 items)

MAZDA

3902839

MAZDA

UH74-33251

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 J3303072 have compatible (OE) part numbers?

Yes — it is linked to 2 OE-compatible part number(s), shown in the compatible parts section above.

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