NPR American V8 Engine Ring Series Piston Ring Set - 3.937 in Bore - 1.5 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 1000504 Momentum GT intakes are designed

Momentum GT intakes are designed with fewer parts for a quick and simple installation

4-7/16 in Thick

Itas patented blade design allows for greater efficiency

GM Metric Hub 1982-88

NPR American V8 Engine Ring Series Piston Ring Set - 3.937 in Bore - 1.5 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 1000504 Momentum GT intakes are designedProduct Description: Piston Rings American V8 Engine Ring Series 3. 937 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