9:44CDL 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 YouTubeImage pending
Brake disc
MERCEDES
203 421 03 12
MERCEDES
210 421 07 12
MERCEDES
210 421 24 12
MERCEDES
210421241264
MERCEDES
210421251264
MERCEDES
A 203 421 03 12
MERCEDES
A 210 421 07 12
MERCEDES
A 210 421 24 12
MERCEDES
A210421241264
MERCEDES
A210421251264
Watch maintenance and replacement tutorials on YouTube.
9:44Driving Academy | CDL Truck Driving School
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12:53
10:20Smart Drive Test
Watch on YouTubeA 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.
Yes — it is linked to 10 OE-compatible part number(s), shown in the compatible parts section above.