KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.030", Stroke: 3.400", Rod Length: 5.400" 916290 Hays continues to expand into

Hays continues to expand into all forms of driveline products for both automatic and manual transmissions

625 in Bore

360-degree radial flow performance air filter with three layers of synthetic media for maximum convenience

Includes a variety of installer studs

High-impact plastic wheel cover features three 1/4"-20 fasteners for secure bolt-on mounting

KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.030", Stroke: 3.400", Rod Length: 5.400" 916290 Hays continues to expand intoKeith Black pistons have several important advantages over conventional alloy pistons. High silicon content yields superior thermal and wear characteristics, greater strength, scuff and seizure protection, and resistance to cracking. High silicon content also keeps heat in the combustion chambers, eliminating heat transfer and improving combustion. Pistons are machined for 5 64" top, 5 64" second and 3 16" oil ring unless noted. Sold in sets of eight