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HELLA

8DD 355 123-421

Brake disc

Specifications

Brake Disc Thickness
11 mm
Centering Diameter
52.2 mm
Height
90.4 mm
Inner Diameter
143 mm
Minimum thickness
9.5 mm
Outer Diameter
274 mm
Brake Disc Type
solid
Surface
Coated
Hole Arrangement/Number
05/05
Bolt Hole Circle Ø
108
Stub Axle Diameter
30
Wheel Bolt Bore Diameter
12
Supplementary Article/Supplementary Info 2
with integrated magnetic sensor ring
Supplementary Article/Supplementary Info
with axle nut
Weight
7.4

Vehicle Manufacturers

MERCEDES(10 items)

MERCEDES

415 420 01 02

MERCEDES

415 420 03 02

MERCEDES

415 421 01 00

MERCEDES

4154203300

MERCEDES

4154204300

MERCEDES

A 415 420 01 02

MERCEDES

A 415 420 03 02

MERCEDES

A 415 420 33 00

MERCEDES

A 415 420 43 00

MERCEDES

A 415 421 01 00

RENAULT(6 items)

RENAULT

402024076R

RENAULT

432004327R

RENAULT

432020879R

RENAULT

432023939R

RENAULT

432025057R

RENAULT

8200381148

NISSAN(1 items)

NISSAN

4320200Q0E

Featured videos

Watch maintenance and replacement tutorials on YouTube.

10:20

Air Brakes Explained Simply :: Service, Parking and Emergency Brakes One & the Same

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CDL Class A FULL In Cab Inspection and Air Brake Test 2023 - Pass Your CDL Trucking Road Test

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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 355 123-421 have compatible (OE) part numbers?

Yes — it is linked to 17 OE-compatible part number(s), shown in the compatible parts section above.

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