Premium. 5/64 3/32 3/16". Does not fit OE pistons. Check piston grooves before using.
5.9L / 360 OHV V8 "FE" 4.050" Bore 68-76
FORD
5.9L / 360 OHV V8 16V 4.050" Bore 68-76
FORD
6.4L / 390 OHV V8 "FE" 4.050" Bore 61-76
FORD
6.4L / 390 OHV V8 16V 4.050" Bore 61-71
FORD
6.4L / 390 OHV V8 16V 4.050" Bore 68-76
FORD
6.7L / 410 OHV V8 16V 4.050" Bore 66-67
FORD
FO360T | 5.9L / 360 OHV V8 16V 4.050" Bore 68-76
FORD
FO390C | 6.4L / 390 OHV V8 16V 4.050" Bore 61-71
FORD,
MERCURY
FO390T | 6.4L / 390 OHV V8 16V 4.050" Bore 68-76
FORD
FO410C | 6.7L / 410 OHV V8 16V 4.050" Bore 66-67
MERCURY