Dorman Brake Master Cylinder M66787

Description

Dorman’s Brake Master Cylinders are suitable for a broad spectrum of vehicle applications. We also offer a selective line of Master Cylinder Repair Kits and Master Cylinder replacement parts, available separately.

Cylinder housing is constructed from high-quality cast iron or aluminum for long-lasting durability
All rubber components are of high-quality EPDM compound for resistance to glycol-based brake fluid
Direct replacement for a proper fit
Manufactured to strict engineering quality standards, each Brake Master Cylinder meets S.A.E. specifications

PRODUCT SPECIFICATIONS
Bore Diameter: 1.125 In.
Forward Outlet Size: 1/2-20 In.
Installation Hardware Included: No
Item Grade: Standard Replacement
Material: Cast Iron
Number of Outlets: 2
Package Contents: Master Cylinder
Package Quantity: 1
Packaging Type: Box
Product Condition: New
Rearward Outlet Size: 9/16-18
Reservoir Included: Yes

OE NUMBERS
DIRECT OE CROSS
18008616 GENERAL MOTORS
3912128 GENERAL MOTORS
3941939 GENERAL MOTORS
5458531 GENERAL MOTORS
5458905 GENERAL MOTORS

DETAILED APPLICATIONS

YEAR MAKE MODEL CONFIGURATION POSITIONS APPLICATION NOTES
1971 Chevrolet G30 Van Manual Brakes Bore: 1.125 In.
1971 GMC G35/G3500 Van Manual Brakes Bore: 1.125 In.
1970 Chevrolet C20 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 Chevrolet C20 Pickup w/Power Brakes; Bore: 1.125 In.
1970 Chevrolet C20 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 Chevrolet C20 Suburban w/Power Brakes; Bore: 1.125 In.
1970 Chevrolet C30 Pickup Exc. 11,000 Lb. Axle; Bore: 1.125 In.
1970 Chevrolet G20 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1970 Chevrolet G20 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 Chevrolet K20 Pickup Bore: 1.125 In.
1970 Chevrolet K20 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 Chevrolet K20 Suburban w/Power Brakes; Bore: 1.125 In.
1970 Chevrolet P20 Van Bore: 1.125 In.
1970 Chevrolet P30 Van Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1970 Chevrolet P30 Van Exc. 11,000 Lb. Axle; w/Moraine Brakes; Bore: 1.125 In.
1970 GMC C25/C2500 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 GMC C25/C2500 Pickup w/Power Brakes; Bore: 1.125 In.
1970 GMC C25/C2500 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 GMC C25/C2500 Suburban w/Power Brakes; Bore: 1.125 In.
1970 GMC C35/C3500 Pickup Exc. 11,000 Lb. Axle; Bore: 1.125 In.
1970 GMC G25/G2500 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1970 GMC G25/G2500 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 GMC K25/K2500 Pickup Bore: 1.125 In.
1970 GMC K25/K2500 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1970 GMC K25/K2500 Suburban w/Power Brakes; Bore: 1.125 In.
1970 GMC P25/P2500 Van Bore: 1.125 In.
1970 GMC P35/P3500 Van Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1970 GMC P35/P3500 Van Exc. 11,000 Lb. Axle; w/Moraine Brakes; Bore: 1.125 In.
1969 Chevrolet C20 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 Chevrolet C20 Pickup w/Power Brakes; Bore: 1.125 In.
1969 Chevrolet C20 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 Chevrolet C20 Suburban w/Power Brakes; Bore: 1.125 In.
1969 Chevrolet C30 Pickup Exc. 11,000 Lb. Axle; Bore: 1.125 In.
1969 Chevrolet G20 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1969 Chevrolet G20 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 Chevrolet K20 Pickup Bore: 1.125 In.
1969 Chevrolet K20 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 Chevrolet K20 Suburban w/Power Brakes; Bore: 1.125 In.
1969 Chevrolet P20 Van Bore: 1.125 In.
1969 Chevrolet P30 Van Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1969 Chevrolet P30 Van Exc. 11,000 Lb. Axle; w/Moraine Brakes; Bore: 1.125 In.
1969 GMC C25/C2500 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 GMC C25/C2500 Pickup w/Power Brakes; Bore: 1.125 In.
1969 GMC C25/C2500 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 GMC C25/C2500 Suburban w/Power Brakes; Bore: 1.125 In.
1969 GMC C35/C3500 Pickup Exc. 11,000 Lb. Axle; Bore: 1.125 In.
1969 GMC G25/G2500 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1969 GMC G25/G2500 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 GMC K25/K2500 Pickup Bore: 1.125 In.
1969 GMC K25/K2500 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1969 GMC K25/K2500 Suburban w/Power Brakes; Bore: 1.125 In.
1969 GMC P25/P2500 Van Bore: 1.125 In.
1969 GMC P35/P3500 Van Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1969 GMC P35/P3500 Van Exc. 11,000 Lb. Axle; w/Moraine Brakes; Bore: 1.125 In.
1968 Chevrolet C20 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 Chevrolet C20 Pickup w/Power Brakes; Bore: 1.125 In.
1968 Chevrolet C20 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 Chevrolet C20 Suburban w/Power Brakes; Bore: 1.125 In.
1968 Chevrolet C30 Pickup Exc. 11,000 Lb. Axle; Bore: 1.125 In.
1968 Chevrolet G20 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1968 Chevrolet G20 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 Chevrolet K20 Pickup Bore: 1.125 In.
1968 Chevrolet K20 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 Chevrolet K20 Suburban w/Power Brakes; Bore: 1.125 In.
1968 Chevrolet P20 Van Bore: 1.125 In.
1968 Chevrolet P30 Van Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1968 Chevrolet P30 Van Exc. 11,000 Lb. Axle; w/Moraine Brakes; Bore: 1.125 In.
1968 GMC C25/C2500 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 GMC C25/C2500 Pickup w/Power Brakes; Bore: 1.125 In.
1968 GMC C25/C2500 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 GMC C25/C2500 Suburban w/Power Brakes; Bore: 1.125 In.
1968 GMC C35/C3500 Pickup Exc. 11,000 Lb. Axle; Bore: 1.125 In.
1968 GMC G25/G2500 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1968 GMC G25/G2500 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 GMC K25/K2500 Pickup Bore: 1.125 In.
1968 GMC K25/K2500 Suburban Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1968 GMC K25/K2500 Suburban w/Power Brakes; Bore: 1.125 In.
1968 GMC P25/P2500 Van Bore: 1.125 In.
1968 GMC P35/P3500 Van Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1968 GMC P35/P3500 Van Exc. 11,000 Lb. Axle; w/Moraine Brakes; Bore: 1.125 In.
1967 Chevrolet C20 Panel Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1967 Chevrolet C20 Panel w/Power Brakes; Bore: 1.125 In.
1967 Chevrolet C20 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1967 Chevrolet C20 Pickup w/Power Brakes; Bore: 1.125 In.
1967 Chevrolet C30 Pickup Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1967 Chevrolet G20 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1967 Chevrolet G20 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1967 Chevrolet K20 Panel Bore: 1.125 In.
1967 Chevrolet K20 Pickup Bore: 1.125 In.
1967 Chevrolet P20 Series Bore: 1.125 In.
1967 GMC C25/C2500 Pickup Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1967 GMC C25/C2500 Pickup w/Power Brakes; Bore: 1.125 In.
1967 GMC C35/C3500 Pickup Exc. 11,000 Lb. Axle; w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1967 GMC G25/G2500 Van w/Bendix Brakes; w/Power Brakes; Bore: 1.125 In.
1967 GMC G25/G2500 Van w/Moraine Brakes; Bore: 1.125 In.; w/Manual Brakes; Stamped NF
1967 GMC K25/K2500 Pickup Bore: 1.125 In.
1967 GMC P25/P2500 Van Bore: 1.125 In.