Sierra 18-3016-1 Impeller Kit For Use On Late-Model Bravos High Performances. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Includes gasket Use with 18-3160-1 Sea Water Pump Fits MCM 4.5L MPI 2000 newer MCM V-6 V-8 305, 350 496 engines with the brass sea water pump Interchangeable with EMP 47-09201 Mallory 9-45310 9-45310-10 Mercruiser Stern Drive 47-862232A2 47-8M0104229 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Othe