Description
* Stock length & head diameter
* Extreme Duty
* High Flow
* one piece forged racing grade stainless steel alloy.
* Liquid nitriding process creates a valve that is smoother and stronger than O.E.M.
* Stems are centerless ground for a longer life
* 45o angle below the lock groove to facilitate the valve seal installation
* Replaces OEM # 18074-66
* Replaces OEM # 18075-80
* Replaces OEM # 18075-81
* Replaces OEM # 18078-80
* Replaces OEM # 18078-81
Head Dia = 1.955in.
OAL = 3.875in.
Stem Dia = 0.3770in.
