Carlson Disc Brake Caliper Piston P/N:7157

Help keep braking firm and even at the rear axle with the Carlson Rear Disc Brake Caliper Piston 7157. This piston is the component inside the caliper that transfers hydraulic pressure from the brake fluid to the pad, pushing it against the rotor each time you press the pedal. It fits many vehicles as a direct-fit replacement for the listed rear-brake applications, among them the 2007-2017 Jeep Patriot, 2007-2016 Jeep Compass and 2008-2014 Dodge Avenger — see the Buyer's Guide tab for the full list.

• Function: Converts hydraulic pressure into the clamping force that applies the brake pad.
• Position: Rear caliper piston; the listed applications use 2 per vehicle.
• Replacement part: Installs during a caliper rebuild or brake service to replace a worn or corroded original.

A pitted, scored, or seized piston can cause a sticking caliper, uneven pad wear, or a soft pedal. If the original piston is the cause of those symptoms, this replaces it. Always diagnose the caliper before servicing, and inspect the seals and bore during installation. Sold individually — this listing is for one piston, and replacing both sides together is recommended for balanced braking.