Custom Mustangs is proud to offer a rebuild kit for the C7ZZ-2B257-D, C8OZ-2B257-B, C8SZ-2B257-A, C8ZZ-2B257-A, and C7OZ-2B091-B disc brake pressure differential and control valves made by Wagner.  Our kit contains all of the parts needed to rebuild your leaky valves and return them to "like new" operating condition, including:

• O-rings
• X-rings
• Proportioning valve spring
• Copper crush washer

The contents of the kit can be seen compared to the original parts (the new parts included in the kit are underneath the original parts) in the picture above.  All of the rubber parts are molded from a 70 durometer ethylene propylene diene monomer (EPDM) rubber compound that is fully compatible with automobile brake fluid.  The spring is made from type 302 stainless steel and features squared and ground ends.  All parts are made right here in the USA! Are you unsure if this kit is for you?  The C7ZZ-2B257-D pressure differential valve was originally used on the following Ford and Lincoln/Mercury vehicles equipped with front disc brakes:

• 1967 Ford Mustang
• 1967 Mercury Cougar

The C8OZ-2B257-B, C8SZ-2B257-A, or C8ZZ-2B257-A pressure differential valve was originally used on the following Ford and Lincoln/Mercury vehicles equipped with front disc brakes:

• 1968, 1969 Ford Mustang
• 1968, 1969 Mercury Cougar
• 1968, 1969 Ford Fairlane, Torino
• 1968, 1969 Ford Thunderbird
• 1968, 1969 Mercury Comet, Montego, Cyclone
• 1968, 1969, 1970 Ford Falcon

The C7OZ-2B091-B brake pressure control valve was originally used on the following Ford and Lincoln/Mercury vehicles equipped with front disc brakes:

• 1967, 1968, 1969 Ford Mustang
• 1967, 1968, 1969 Ford Torino
• 1967, 1968, 1969 Ford Fairlane
• 1967, 1968, 1969 Ford Falcon
• 1967, 1968, 1969 Mercury Cougar
• 1967, 1968, 1969 Mercury Comet
• 1967, 1968, 1969 Mercury Montego

Complete rebuild instructions and additional identification information can be found on the Muscle Car Research web site.