Head Gasket Cmf-20 W/Fire Ring Shovelhead 1966/L, 3-1/2" Bore Rpls Hd 19770-66B Mfg# C9604-1
MID-60491
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Head Gasket Cmf-20 W/Fire Ring Shovelhead 1966/L, 3-1/2" Bore Rpls Hd 19770-66B Mfg# C9604-1
Head Gasket (Each)
3 7/16 or 3 1/2 (Stock Bore)
Fits Shovelhead 1966/1984
Replaces HD# 16770-66B
- CM-20 is a perforated steel core gasket which allows heat to be drawn away from the combustion ring while dissipating heat evenly across the gasket surface
- Hot spots that lead to head gasket failure are eliminated
- CM-20's elastomer surface provides maximum sealing characteristics and sealing around passages that carry oil
- All gaskets listed are .043 thick and feature a steel fire ring at the combustion area to help prevent blown head gaskets
Head Gasket (Each)
3 7/16 or 3 1/2 (Stock Bore)
Fits Shovelhead 1966/1984
Replaces HD# 16770-66B
