Allstar Performance Residual Check Valve - 2 lb. H768D03S 13-1/2 in Long

13-1/2 in Long

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1983-1986 Ford LTD

Allstar Performance Residual Check Valve - 2 lb. H768D03S 13-1/2 in LongResidual 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