2 psi Residual Valve (1 qty) 2 maybe required.
These are a 2 PSI residual valve that would be needing less press when installing disc brakes with drum brakes. This is a non-original part for all trucks . Only used in upgrades.
This valve prevents fluid flow-back to the master cylinder reservoir which can cause excessive brake travel or “pumping” of the pedal to engage brakes. Install the valve as close as possible to the master cylinder and position the end marked “M.C.” toward the master cylinder and the end marked “OUT” toward the brakes.
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