Speed Pro Hypereutectic Piston 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 12.3 cc - Coated Skirt AS04421 All seams are Safety Stitched

All seams are Safety Stitched to help limit seam failure

1967-1968 Mercury Cougar

Very strong mid-range torque and throttle response

Our results were crystal clear

Speed Pro Hypereutectic Piston 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves Plus 12.3 cc - Coated Skirt AS04421 All seams are Safety StitchedProduct Description: Piston Hypereutectic 4. 040 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 12. 30 cc Coated Skirt Small Block Chevy Set of 8 From 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 technologies, from cutting edge Digital Diamond Profiled pistons to A Series bearings. They are engine components performance enthusiasts and