As the crankshaft flexes and twists, the harmonic damper absorbs incredible amounts of kinetic energy. To ensure that the damper is locked in position, ARP has developed these ultra strong 190,000 psi bolts that let you exert maximum clamping force. Special features include 1/4" thick, wide area washer and an extra tall 12-point head that accepts a deep socket and eliminates the worry of stripping the head.
- Thread Size:
- 5/8-18 in.
- Head Style:
- Square drive
- Underhead Length (in.):
- 2.050 in.
- Washer Included:
- Yes
- Material:
- 8740 chromoly
- Finish:
- Black oxide
- Quantity:
- Sold individually.
- Make:
- Ford
- Engine Family:
- Ford big block 385 Series
- Engine Sizes:
- 7.0L/429-7.5L/460
- Years:
- 1968-1997
- Engine Family:
- Ford big block FE
- Engine Sizes:
- 5.4L/332-7.0L/428
- Years:
- 1957-1976
- Engine Family:
- Ford Modified
- Engine Sizes:
- 5.8L/351-6.6L/400
- Years:
- 1975-1982
- Engine Family:
- Ford small block Windsor
- Engine Sizes:
- 3.6L/221-5.8L/351
- Years:
- 1962-2001
