Dual Fuel Rail Line Chrome Holley Vacuum Secondaries.
-8-21/32" Centre to Centre on outlet.
-Machine Flared Ends.
-Suits 5/8-18 (5/8"Unf) inverted flare inlet.
-1/8npt thread for optional gauge.
-Chrome fuel line to suit Holley Vacuum Secondary carburettors with centre hung/A-frame/cathedral style bowls and no rear block, such as Holley 4160.