Carlson 7851 Disc Brake Caliper Piston - Rear
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Carlson

Carlson 7851 Disc Brake Caliper Piston - Rear

Brand Carlson 7851
Position Rear
Fits Chevrolet and GMC · 8 vehicles

Caliper piston. Uses brake fluid pressure to force the pads against the rotor.

Brake hydraulics part. Built for the braking system’s hydraulic operation.

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Carlson 7851 Rear Disc Brake Caliper Piston

The Carlson 7851 disc brake caliper piston is a brake hydraulics component built for rear caliper service on select Chevrolet and GMC vans. It uses brake fluid pressure to move the caliper piston and press the pads against the rotor, helping restore proper braking action.

Compatible with 2003-2006 Chevrolet Express 2500 rear and 2003-2006 GMC Savana 2500 rear, this part number 7851 is a direct-fit service component for the listed applications.

  • Rear disc brake caliper piston for brake hydraulic repair
  • Fits 2003-2006 Chevrolet Express 2500, rear
  • Fits 2003-2006 GMC Savana 2500, rear
  • Supports caliper operation by transferring hydraulic pressure to the pads
  • Built for use in D974 disc brake caliper repair kit applications noted in fitment

How It Works

In a disc brake system, the caliper piston is a critical hydraulic interface. When brake fluid pressure enters the caliper, the piston moves outward and applies force to the brake pads, which clamp the rotor and slow the vehicle. Carlson 7851 is made for rear brake service on the Chevrolet Express 2500 and GMC Savana 2500 listed above, where consistent piston movement is necessary for proper braking response.

Common Brake Issues It Can Address

  • Sticking or seized rear caliper piston movement
  • Uneven pad contact at the rear brakes
  • Brake drag caused by worn hydraulic caliper components
  • Poor braking response from damaged piston surfaces
  • Brake service needs on 2003-2006 Chevrolet Express 2500 and GMC Savana 2500 rear calipers

Installation Notes

Inspect the caliper bore, seals, and brake fluid condition before installation. Clean all mating surfaces thoroughly and verify that the piston moves smoothly after assembly. Because this is a hydraulic brake component, proper bleeding and system inspection are required after service.

Quality Assurance

Carlson designs brake components as part of a complete system, with the piston serving an essential role in hydraulic brake operation. Part number 7851 is specified for the listed rear applications on Chevrolet Express 2500 and GMC Savana 2500 models.

Related reading

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2006ChevroletExpress 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit
2006GMCSavana 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit
2005ChevroletExpress 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit
2005GMCSavana 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit
2004ChevroletExpress 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit
2004GMCSavana 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit
2003ChevroletExpress 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit
2003GMCSavana 2500Rear7300 lb. GVW D974 Disc Brake Caliper Repair Kit