KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.040", Stroke: 2.870", Rod Length: 5.090" 4414MEDWH but you will need a

but you will need a slightly shorter mounting bolt (about 3/16" shorter)

good idle quality

Does Not fit 2019 New body trucks

Including our 5454 spring compressor

KB Hypereutectic Flat Top Piston Set - SB Ford 289-351W - Bore Size: 4.040", Stroke: 2.870", Rod Length: 5.090" 4414MEDWH but you will need aKeith 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 combustionchambers, 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