Speed Pro Economy Piston Rings 4.280" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron H77603FS The internal substrate material and

The internal substrate material and precious metal loading have been carefully engineered for maximum efficiency and to avoid MIL (Malfunction Indicator Lamp) code issues that are common with lower quality converters

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Speed Pro Economy Piston Rings 4.280" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron H77603FS The internal substrate material andProduct Description: Piston Rings Economy 4. 280 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