The brake caliper fits like a clamp on a wheel’s rotor to stop the wheel from turning when you step on the brakes. For Chevrolet Impala 2011 All Engine. For Chevrolet Impala 2012-2013 LS,LT,LTZ. When you push the brake pedal, brake fluid creates pressure on pistons in the brake caliper, forcing the pads against the brake rotor and slowing your car.
