Everything you need to restore an older 2 barrel carburetor found on many MerCruiser sterndrives For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers. They have gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters can be assured a Sierra part will fit right the first time and restore function to factory standards. This re-build kit is compatible with older 2 barrel MerCarb carburetors with a bottom fill accelerator pump cavity. These carbs were used on many 1983-1986 MCM 120, 140, 470, 185, 200, and 898 engines. The kit includes gaskets, jets, springs, retaining rings, filter, and everything else you will need to restore performance and function. All you will need to supply is a clean bench and some clean rags.