NPR American V8 Engine Ring Series Piston Ring Set - 4.120 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 55000029290 and Street Stocks

and Street Stocks

4 AN Male x 4 AN Male x 1/8 in NPT Male

Since 2000 it has been the only oil used by Joe Gibbs Racing as well as many other top level racing organizations

As a racer

This gear oil formula is fortified with special anti-wear agents and lubricity agents to control wear and drag as well as special additives to control heat

NPR American V8 Engine Ring Series Piston Ring Set - 4.120 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 55000029290 and Street StocksProduct Description: Piston Rings American V8 Engine Ring Series 4. 120 in Bore 1. 2 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