Speed Pro Economy Piston Rings 4.290" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Master Cylinder Power Band 4500-7600 rpm

Power Band 4500-7600 rpm

Detailed instructions are included

Block mount to fan hub dimension is 5-13/16"

There is no contact between seal and crankshaft

1965-1974 Buick Riviera

Speed Pro Economy Piston Rings 4.290" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Master Cylinder Power Band 4500-7600 rpmProduct Description: Piston Rings Economy 4. 290 in Bore Drop In 5 64 x 5 64 x 3 16 in Thick Standard Tension Cast Iron Phosphate 8 Cylinder 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 racers