NPR American V8 Engine Ring Series Piston Ring Set - 4.100 in Bore - 1.5 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 12-673-4 The bearing bore is machined

The bearing bore is machined at the same time as the hub and reverse piston bore ensuring perfect alignment within one thousandth of an inch

Wing Valve Handle

Place between ball joint tips

AN-10 size with a 10 micron microglass element and red anodize finish

Block Logo

NPR American V8 Engine Ring Series Piston Ring Set - 4.100 in Bore - 1.5 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 12-673-4 The bearing bore is machinedProduct Description: Piston Rings American V8 Engine Ring Series 4. 100 in Bore 1. 5 x 1. 5 x 3. 0 mm Thick Standard Tension Steel Nitride 8 Cylinder NPR Piston Rings is a world leader in the production of piston rings. A long time supplier for OEM applications, they also produce a line of performance piston rings designed for top tier performance and reliability. With performance piston rings for a wide range of engines, including popular V8's from