Overhaul a Mercury outboard carburetor with a complete parts kit. Sierra parts are engineered to meet or exceed the specifications of marine engine manufacturers and have gained the confidence of the marine industry. Sierra rebuild kits save you the time of researching and sourcing individual parts. This kit for Mercury for 4hp—4.5hp outboards includes the jet, gaskets, O-rings and fuel filter needed to complete the re-build. All you will need to supply is a clean bench and clean rags. Key Features Sierra rebuild kits meet or exceed manufacturers specifications Complete kits are designed to restore function to carburetors used on Mercury 4hp—4.5hp outboards manufactured btween 1980—1985 Replaces over 100 Tilloston, GLM, and Mallory carburetor kits; see our Engine Parts Selector to confirm this is the correct kit for your AJ, KA, KB, KC, or KD Tilloston carburetor Backed by SeaStar SolutionsLimited Two-Year Warranty The Sierra Engine Parts Selector In addition to carburetor rebuild kits, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see ourEngine Parts Selector, where you can search by engine make, model and year of manufacture.Instructions AJ modelsInstructions KA, KB, and KC models