SCS Professional Series Quick Change Gear Set #37 2010215 Dual fuel lines for Holley

Dual fuel lines for Holley 4150 Ultra HP Carburetors w -8 O-ring HP Bowls

6 Toggle / 1 Momentary Button

NOTE: The PN 83653 is designed to replace GM HEI Distributors that use a 4-pin ignition module

Note if this product is to be used with aftermarket (tall) EV1 performance injectors: ΓÇó LS2

SCS Professional Series Quick Change Gear Set #37 2010215 Dual fuel lines for HolleySCS Professional Series Quick Change Gears are made from aircraft steel for maximum strength. Each gear has a shaved finish to minimize backlash and run out, and is broached for proper 10 spline shaft fit. The SCS Extra 5 step heat treating process yields maximum gear life for high stress applications such as big block Oswego Super Modifieds and World of Outlaws Sprint Cars. Gears have a black oxide finish, and the faces have been lightened to reduce