JE Pistons Ultra Series pistons combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. They are ready for massive power and boost right out of the box! JE Ultra, Ford, Modular Ford, 3.661 in. Bore, 1.168 CD, Dome, 8 Cyl. Piston Kit Ford 5.0L Coyote
