This will fit all Mercury Mariner 50 Hp (3CYL) Complete Fuel Pump Repair Kit WSM Sierra 18-7817 OEM# 89031A4.

All kits include enough parts for one fuel pump, order one kit for one fuel pump. If you have multiple fuel pumps, you must order 1 kit for each. Please be advised that Mercury/Mariner motors DO NOT go by the year they were produced. So please check all information available such as the following to identify your engine to the correct part.

Serial# Range (Begining-Ending): B122930 & UP
Replaces OEM#89031A4

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