C4/C5 Piston Reverse Servo (Molded) – Compatible for Ford 1964-1986
Fix no-reverse, slow reverse, or that nasty clunk once and for all with this modern molded piston.
The original cast piston with separate lip seal is famous for cracking and leaking after years of heat — leaving you with weak or nonexistent reverse. This direct-replacement piston features a permanently bonded rubber sealing lip that stays soft and leak-free for decades. Drop it into any 1964-1986 C4 or C5 during your rebuild and enjoy instant, solid reverse engagement every single time.
Perfect fit for classic Ford models including:

Mustang, Falcon, Fairlane, Torino, RancheroF-100/F-150, Bronco, EconolineMercury Comet, Cougar, Montego

Symptoms of a bad reverse servo piston:

No or very delayed reverse engagementHarsh bang when reverse finally grabsBurnt reverse band on teardownFluid leaking past servo cover

Say goodbye to old-school servo problems — upgrade to the molded piston and make reverse work like it did in 1968.
Add this essential C4/C5 upgrade to your cart today and put reverse back in action — instantly!