Water pump impeller for outboard motor from CEF Marine, model 500377, is a flexible impeller for the cooling water pump on documented Mercury, Mariner, Tohatsu, Nissan, and Parsun engines. The impeller is driven by the engine's shaft and circulates cooling water through the engine's cooling system.
The impeller has six blades and a shaft drive with a keyway. It is manufactured from black neoprene and measures 10.25 mm in internal diameter, 33.60 mm in external diameter, and 14.2 mm in axial width. The scope of delivery is one loose impeller; gaskets and keys are not specified as included.
Compatible engine models
For Mercury and Mariner, documented applications include, among others, 3.3/4/5/6 hp 2-stroke engines as well as 4/5/6 hp 4-stroke engines. More specific applications include the 3.3 hp 2-stroke with gear shift from model year 1993, 4/5 hp 2-stroke from model year 1987, and 4/5/6 hp 4-stroke from model year 1999. Newer Mercury 4–6 hp 4-stroke engines from serial number 0R411838 and onwards are linked to cross-reference 8M0204676.
For Tohatsu and Nissan, compatibility includes, among others, the 3.5B, 3.5B2, and 5B 2-stroke series as well as the 2A, 2.5A, 2.5B, 3.5A, 3.5B, 4A, 4A2, 4B, 4C, 5A, 5A2, 5B, 5C, 6A2, 6B, and 6C 4-stroke series. It is also documented for the 5CLPG. Parsun compatibility includes F5A, F6A, and T5.8BM.
Replaces and cross-references to
Mercury/Mariner: 47-16154, 47-16154-3, 47-16154-B and 8M0204676.
Tohatsu/Nissan: 369-65021-1, 369-65021-1M and earlier 369-65021-0M.
Parsun: T5-03000300.
Aftermarket: Sierra 18-3098, Mallory Marine 9-45302, EMP 47-02170 and Powerfactory/Azzi P-149.
Engine model-dependent Mercury repair kits include 889246A16 and 16159A03. These kits are related spare parts and are not included with the impeller.
1516377
Always check the engine/drive model, serial number, and original part number before purchase.
Key features
Flexible water pump impeller for outboard engine cooling water pump
CEF Marine model 500377
Six impeller blades
Internal diameter: 10.25 mm
External diameter: 33.60 mm
Axial width: 14.2 mm
Black neoprene
Shaft drive with keyway
Supplied as one loose impeller
