Carlson Disc Brake Caliper Piston P/N:7840

Keep hydraulic braking force moving to the pads with the Carlson Disc Brake Caliper Piston (P/N 7840). It fits as a direct-fit replacement in the rear caliper of the 2001-2008 Dodge Ram 3500 [All], where four pistons are used per application. When hydraulic pressure builds in the caliper bore, the piston translates that pressure into clamping force, pushing the brake pad against the rotor to slow the vehicle.

• Rear caliper application: Designed for the rear disc brake calipers on the listed Ram 3500 application.
• Hydraulic function: Transfers fluid pressure into pad clamping force within the caliper bore.
• Direct-fit replacement: Serves as a replacement piston for the listed application.
• Quantity per application: Four pistons are used per application on this fitment.

Over time, caliper pistons can corrode, stick, or develop seal-related issues that affect brake performance. If a worn or seized piston is the cause of dragging brakes, uneven pad wear, or poor pedal response, replacing it can help restore proper caliper operation. Diagnose the underlying cause before replacing.

Manufacturer part number 7840.