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1973-1974 GMC G35/G3500 Van
Belt or Hex Driven
1973-1974 Oldsmobile Omega
Attaches easily with speedfit system
Prep Stand Tool Holder
Allstar Performance Residual Check Valve - 2 lb. Rear Main Seal Adapter 1973-1974 GMC G35/G3500 VanResidual check valves hold a small amount of pressure in the brake system to keep the brake system functioning properly while helping to maintain a firm pedal. Maintaining system pressure prevents fluid from returning to the master cylinder when the master cylinder is positioned lower than or close to the same height as the calipers or wheel cylinders. Proper system pressure also keeps piston and wheel cylinder seals expanded, creating a positive seal
