How a car works

All partsBMW M4 CSLWheel assembliesRear left wheel › Brake caliper

Brake caliper

Part of Rear left wheel · about $980 to replace

What it is

Single-piston floating caliper with electric parking brake.

What it does

Pushes the pads against the disc.

How it fails

Sticking pistons after winter salt; rebuild with new seals.

MaterialCast aluminium, stainless pistons
Spec1 × 45 mm piston
Brake caliper highlighted on the car

Appears at

Rear left wheelRear right wheel

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