Yella Terra 0.500" Tall Valve Cover Spacer O-Ring Seal/Hardware Included Aluminum Natural - GM LS-Series 12199901 Each header is manufactured with

Each header is manufactured with 1-3/4 CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torque over factory OEM manifolds

Easy installation with optional bottom and rear seat mounts

including moderate drag racing

(Will not work with DBW)

Hyper-Gate 45

Yella Terra 0.500" Tall Valve Cover Spacer O-Ring Seal/Hardware Included Aluminum Natural - GM LS-Series 12199901 Each header is manufactured withProduct Description: Valve Cover Spacer 0. 984 in Tall O Ring Seal Hardware Included Aluminum Natural GM LS Series Yella Terra has been designing, developing and manufacturing High Performance products in Australia for over 50 years! Over 60 Years of Performance Innovation! From humble beginnings in the early 1960s Dyno Dave Bennett and his staff have built Yella Terra into Australias leading manufacturer of Roller Rockers, Performance Cylinder Heads,