502 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust opt-tap-for-full-flow-upg OEM Part#: 113 953 041C

OEM Part#: 113 953 041C

1 1/2" w/Straight Stinger

and cut push rods

Part#: 068 117 021B

Billet Aluminum Shift Knob

502 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust opt-tap-for-full-flow-upg OEM Part#: 113 953 041CMade from an AA 502 Series Casting, It is set up to build the performance Head of your needs. It comes with Seats 40x35. 5, Guides, with a 12mm plug hole. The 502 Series comes with our Stage 2 porting with a modernized combustion chamber for increased head flow & performance. There is a second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. Blocked off rocker stud bosses, to eliminate the O ring and