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 This gear oil formula is

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

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

Fits 1998-2003 Ford F-150 truck with 4

and Street Stocks

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 This gear oil formula isProduct 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