Bolt for the harmonic balancer (to crankshaft) for all
Overhead Valve Ford V8 engines 1954-2000
(Y-Block, Big Block FE, Big Block 385 Series, Small Block Windsor, Modular)
except 351C Cleveland

221" 3.6L, 242" 3.9L, 255/256" 4.2L, 260" 4.3L, 265" 4.2L, 289" 4.7L, 302" 5.0L,
312" 5.1L, 330/332" 5.4L, 351W 5.8L Windsor, 400" 6.6L, 429" 7.0L & 460" 7.5L

Thread Size 5/8-18"
Underhead length 2.000"
includes Washer