NPR American V8 Engine Ring Series Piston Ring Set - 4.125 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 21-233-4 Use with BlackHeart Headers BH2358

Use with BlackHeart Headers BH2358 (tested for correct fitment with these engine mounts)

We've engineered a drone free aggressive muffler tuned specifically for the 5

but don't let size fool you

1994-1998 Ford Explorer

Bulk Pack of 100

NPR American V8 Engine Ring Series Piston Ring Set - 4.125 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 21-233-4 Use with BlackHeart Headers BH2358Product Description: Piston Rings American V8 Engine Ring Series 4. 125 in Bore 1. 2 x 1. 2 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