Speed Pro Hypereutectic Piston 4.390" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 4.2 cc - Coated Skirt Oiling Systems Bypass Valve Jet Can

Bypass Valve Jet Can

1983-1984 Pontiac ParisienneFits all GM TH350 and TH250 automatic transmissions

This MACH Force XP uses factory mounting locations providing stability and a hassle-free installation

The company’s success is rooted in its philosophy of providing nothing but the very best in products and services

Speed Pro Hypereutectic Piston 4.390" Bore 5/64 x 5/64 x 3/16" Ring Grooves Minus 4.2 cc - Coated Skirt Oiling Systems Bypass Valve Jet CanFord 429, 460 Sophisticated "barrel" profiles help optimize oil wedge between skirt and wall. Piston skirts protected by next gen DUROSHIELD coating. TAC ring groove geometry Weight matched to + 2 grams. Machined valve reliefs and circlip grooves; LR 63 lock rings for floated applicationsFrom pistons to engine bearing components, Speed Pro offers an array of performance engine parts. You can rely on Speed Pro for industry leading performance engine