NPR Performance Piston Ring Set V8 3.937 Bore 1.2x1.2x3.0

Piston Rings - American V8 Engine Ring Series - 3.937 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Steel - Nitride - 8-Cylinder - Kit - Brand: NPR of America - Part Number: 20-GNHS3937K8