16x O-rings, 2 for each Injector. This kit can do up to three things for your truck For Ford 6.9L/7.3L 1988-1994. 1983-1994 Ford F-250 / F-350 / F-Super Duty. 1983-1994 Ford E-250 / E-350 Van. Cure Hard Starting due to air leaking into the fuel system.
