Everything you need to restore a Rochester 4 barrel Quadra Jet For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters and techs can be assured a Sierra part will fit right the first time and restore function to OEM standards. Designed to work with Rochester Quadra Jet carburetors used on many GM based 4 and 6 cylinder inline engines between 1969 and 1995, and V-6 and V-8 305, 350,427, 454, and 502 engines. This re-build kit includes, gaskets, O-rings, jets, and everything else you will need to restore performance and function. All you will need to supply is a clean bench and clean rags.