Speed Pro Speed Pro Piston Forged 4.124" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 38.3 cc 3552024-156- L Universal 6-Cylinder

Universal 6-Cylinder

Half Shielded

1978-1981 Pontiac Catalina

The Eaton Posia" achieved icon status later in the decade and through the 1970as when these differentials were offered as on option on all General Motors muscle cars

Speed Pro Speed Pro Piston Forged 4.124" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 38.3 cc 3552024-156- L Universal 6-CylinderFully updated skirt profiles Exclusive DUROSHIELD skirt coating. DUROSHIELD provides scuff resistance, reduced bore clearances and enhanced ring sealing. SPEED PRO POWERFORGED pistons are built to stringent specifications with a precision CNC machined dome and skirts and microfinished ring grooves. The manufacturing process ensures that piston weights within a boxed set will not vary more than 4 grams and that skirt sizes are matched to within 0.