These kits were designed for the use of -8 AN on Holley 4150 & 4160 Carburetors, they use a crimped Teflon hose assy between the bowls so the hose will not deteriorate with fuel additives like all rubber hoses, you can loosen all connections to aling all fittings.

5460  -8 AN Model # 4160
5470  -8 AN Model # 4150
5480  -8 AN Model # Dominator