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Dorman W79768 Drum Brake Wheel Cylinder - Rear, Rear Left or Rear RightOE Quality 60-Day Returns
Part #: W79768

Dorman W79768 Drum Brake Wheel Cylinder - Rear, Rear Left or Rear Right

Rear
283 vehicles fit this part
Select your vehicle to confirm fitment
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Fitment: Workhorse, Chevrolet, and GMC, P30, Express 2500, Express 3500, Savana 2500, Savana 3500, C35, C3500, K3500, P3500, G30, G3500, R3500, V3500, R30, V30, C30, K30, G35, K35, P35, C30 Pickup, G30 Van, P30 Van, C35/C3500 Pickup, G35/G3500 Van, and P35/P3500 Van
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Not what you need? See all Drum Brake Wheel Cylinder options

Reliable Drum Brake Wheel Cylinder for Chevrolet and GMC Trucks

The Dorman W79768 drum brake wheel cylinder is engineered to restore proper braking function for select Chevrolet and GMC heavy-duty trucks and vans. Designed with durable cast iron construction and precise bore diameter, this wheel cylinder ensures consistent hydraulic pressure for safe stopping performance.

  • Includes bleeder screw for easy brake system bleeding
  • Constructed from cast iron for strength and durability
  • 1.188 inch bore diameter for accurate fit and function
  • Brake component inlet thread size: 3/8-24 inches
  • Compatible with multiple Chevrolet and GMC models including C30, C3500, Express 2500, and Savana 3500

Durable Construction and Precise Specifications

The Dorman W79768 wheel cylinder features a cast iron casting material that provides long-lasting resistance to wear and corrosion. Its 1.188 inch bore diameter is designed to match OEM specifications, ensuring proper hydraulic pressure and brake shoe movement. The included bleeder screw simplifies brake fluid bleeding during installation or maintenance, although the bleeder screw cap is not included. Thread dimensions of 3/8-24 inches allow for secure connection to the brake hydraulic system.

Compatible Chevrolet and GMC Models

This drum brake wheel cylinder is compatible with a range of Chevrolet and GMC heavy-duty trucks and vans, including the Chevrolet C30, C35, C3500, Express 2500, Express 3500, G30, K30, K3500, P30, P3500, R30, R3500, Savana 2500, Savana 3500, V30, and V3500 models. Using the correct wheel cylinder like the Dorman W79768 helps maintain braking reliability and safety on these vehicles.

Common Brake Issues Addressed

  • Brake fluid leaks from worn or damaged wheel cylinders
  • Uneven brake shoe wear due to inconsistent hydraulic pressure
  • Spongy or soft brake pedal feel caused by failing wheel cylinders
  • Reduced braking efficiency and increased stopping distances
  • Brake drag or sticking caused by seized wheel cylinder pistons

Installation Notes and Tips

When installing the Dorman W79768 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely supported. Use the included bleeder screw to properly bleed air from the brake lines after installation. Inspect brake shoes and hardware for wear and replace as necessary to ensure optimal brake performance. Follow manufacturer torque specifications for all fittings and connections.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The W79768 wheel cylinder undergoes rigorous quality control to ensure durability and reliable performance. Please refer to Dorman's warranty policy for specific coverage details.

BrandDorman
Part NumberW79768
Bleeder Screw Cap IncludedNo
Bleeder Screw IncludedYes
Bore Diameter1.188
Brake Component Inlet Thread Size3/8-24 in
Casting MaterialCast Iron
Package Contents1 Drum Brake Wheel Cylinder
Thread Diameter3/8

This part fits 283 vehicles. Search below:

YearMakeModelFuel TypePositionNotes
2002ChevroletExpress 2500DIESELRearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2002ChevroletExpress 3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2002GMCSavana 2500DIESELRearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2002GMCSavana 3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2001ChevroletExpress 2500DIESELRearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2001ChevroletExpress 3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2001GMCSavana 2500DIESELRearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2001GMCSavana 3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2000ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
2000ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
2000ChevroletExpress 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
2000ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
2000GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
2000GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
2000GMCSavana 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1999ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1999ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1999ChevroletExpress 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1999ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1999ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1999ChevroletP30RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1999GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1999GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1999GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1999GMCP3500RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1999GMCSavana 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1998ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1998ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1998ChevroletExpress 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1998ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1998ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1998ChevroletP30RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1998GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1998GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1998GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1998GMCP3500RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1998GMCSavana 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1997ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1997ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1997ChevroletExpress 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1997ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1997ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1997ChevroletP30RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1997GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1997GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1997GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1997GMCP3500RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1997GMCSavana 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1996ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1996ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1996ChevroletExpress 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1996ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1996ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1996ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1996ChevroletP30RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1996GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1996GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1996GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1996GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1996GMCP3500RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1996GMCSavana 3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1995ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1995ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1995ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1995ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1995ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1995ChevroletP30RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1995GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1995GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1995GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1995GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1995GMCP3500RearBore: 1.1875 In.; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1994ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1994ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1994ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1994ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1994ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1994ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1994GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1994GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1994GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1994GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1994GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1993ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1993ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1993ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1993ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1993ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1993ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1993GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1993GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1993GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1993GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1993GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1992ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1992ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1992ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1992ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1992ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1992ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1992GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1992GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1992GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1992GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1992GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1991ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1991ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1991ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1991ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1991ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1991ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1991ChevroletR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1991ChevroletV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1991GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1991GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1991GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1991GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1991GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1991GMCR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1991GMCV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1990ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1990ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1990ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1990ChevroletR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990ChevroletV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1990GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1990GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1990GMCR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1990GMCV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1989ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1989ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1989ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1989ChevroletR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989ChevroletV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1989GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1989GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1989GMCR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1989GMCV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1988ChevroletC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1988ChevroletK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1988ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1988ChevroletR30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988ChevroletV30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1988GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1988GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1988GMCR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1988GMCV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1987ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1987ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1987ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1987ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1987ChevroletR30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1987ChevroletV30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1987GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1987GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1987GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1987GMCR3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1987GMCV3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1986ChevroletC30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1986ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1986ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1986ChevroletK30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1986ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1986ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1986GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1986GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1986GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1986GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1986GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1985ChevroletC30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1985ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1985ChevroletG30RearBore: 1.1875 In.; 10,000 Lb. GVW
1985ChevroletK30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1985ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1985ChevroletP30RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1985GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1985GMCG3500RearBore: 1.1875 In.; 10,000 Lb. GVW
1985GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1985GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1985GMCP3500RearBore: 1.1875 In.; 9,000 to 14,500 Lb. GVW; w/Dual Rear Wheels (DRW); wo/Motorhome Chassis
1984ChevroletC30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1984ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1984ChevroletG30RearBore: 1.1875 In., 8,900 to 10,500 Lb. GVW
1984ChevroletK30RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1984ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1984ChevroletP30RearBore: 1.1875 In.; 9,000 to 10,000 Lb. GVW; Heavy Duty Brakes; wo/Motorhome Chassis
1984GMCC3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1984GMCG3500RearBore: 1.1875 In., 8,900 to 10,500 Lb. GVW
1984GMCK3500RearBore size: 1.1875 in, fits vehicles with dual rear wheels (DRW)
1984GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1984GMCP3500RearBore: 1.1875 In.; 9,000 to 10,000 Lb. GVW; Heavy Duty Brakes; wo/Motorhome Chassis
1983ChevroletC30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1983ChevroletC35RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1983ChevroletG30RearBore: 1.1875 In., 8,900 to 10,500 Lb. GVW
1983ChevroletK30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1983ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1983ChevroletP30RearBore: 1.1875 In.; 9,000 to 10,000 Lb. GVW; Heavy Duty Brakes; wo/Motorhome Chassis
1983GMCC3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1983GMCG3500RearBore: 1.1875 In., 8,900 to 10,500 Lb. GVW
1983GMCK3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1983GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1983GMCP3500RearBore: 1.1875 In.; 9,000 to 10,000 Lb. GVW; Heavy Duty Brakes; wo/Motorhome Chassis
1982ChevroletC30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1982ChevroletG30RearBore: 1.1875 In.; 8,900 to 10,000 Lb. GVW
1982ChevroletK30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1982ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1982ChevroletP30RearBore: 1.1875 In.; 9,000 to 10,000 Lb. GVW; Heavy Duty Brakes; wo/Motorhome Chassis
1982GMCC3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1982GMCG3500RearBore: 1.1875 In.; 8,900 to 10,000 Lb. GVW
1982GMCK3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1982GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1982GMCP3500RearBore: 1.1875 In.; 9,000 to 10,000 Lb. GVW; Heavy Duty Brakes; wo/Motorhome Chassis
1981ChevroletC30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1981ChevroletG30RearBore: 1.1875 In.; 8,900 to 10,000 Lb. GVW
1981ChevroletK30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1981ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1981ChevroletP30RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1981GMCC3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1981GMCG3500RearBore: 1.1875 In.; 8,900 to 10,000 Lb. GVW
1981GMCK3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1981GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1981GMCP3500RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1980ChevroletC30RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1980ChevroletG30Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1980ChevroletK30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1980ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1980ChevroletP30RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1980GMCC3500RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1980GMCG3500Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1980GMCK3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1980GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1980GMCP3500RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1979ChevroletC30RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1979ChevroletG30Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1979ChevroletK30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1979ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1979ChevroletP30RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1979GMCC3500RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1979GMCG3500Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1979GMCK3500RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1979GMCP3500Rear1.1875 In. Bore; Motorhome Chassis Compatible
1979GMCP3500RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1978ChevroletC30RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1978ChevroletG30Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1978ChevroletK30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1978ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1978ChevroletP30RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1978GMCG35Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1977ChevroletC30RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1977ChevroletG30Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1977ChevroletK30RearDrum Brake Wheel Cylinder with 1.1875-inch bore size.
1977ChevroletP30Rear1.1875 In. Bore; Motorhome Chassis Compatible
1977ChevroletP30RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1977GMCG35Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1976ChevroletC30RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1976ChevroletG30Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1976ChevroletP30RearBore: 1.1875 In.; 7,000 to 12,300 Lb. GVW; w/Motorhome Chassis
1976ChevroletP30RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1976GMCG35Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1975ChevroletC30RearFitment Note: Bore size of 1.1875 inches, designed for vehicles with 9,000 to 10,000 lb. GVW and equipped with heavy-duty brakes.
1975ChevroletG30Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1975ChevroletP30RearBore: 1.1875 In.; 7,000 to 12,300 Lb. GVW; w/Motorhome Chassis
1975ChevroletP30RearBore size 1.1875 Inches, compatible with vehicles with 9,000 to 10,000 lb GVW, excluding Motorhome Chassis.
1975GMCG35Rear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)
1974GMCG35/G3500 VanRear1.1875" Bore Drum Brake Wheel Cylinder for 8,900 to 10,000 Lb. GVW w/Dual Rear Wheels (DRW)

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

134.66013172-121318004609203733733708784-4401379768F79768W-86013W906417WC13708

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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