Driver Side（Left）： 18-B5517, 18B5517, 18-P5517, 18P5517, 1818004, CK4Z2553B, CK4Z2553C. Passenger Side（Right）： 18-B5516, 18B5516, 18-P5516, 18P5516, 1818003, CK4Z2552B, CK4Z2552C. The brake caliper fits like a clamp on a wheel’s rotor to stop the wheel from turning when you step on the brakes.
