Allstar Performance Residual Check Valve - 2 lb. Rear Main Seal Adapter Belt or Hex Driven

Belt or Hex Driven

1980-1981 Jeep Cherokee

1973-1974 GMC G35/G3500 Van

extinguishers with an O

1973-1974 Oldsmobile Omega

Allstar Performance Residual Check Valve - 2 lb. Rear Main Seal Adapter Belt or Hex DrivenResidual 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