This water pump impeller for Mercury/Mariner outboard motors is a flexible six-blade spare part for the cooling water pump on documented 2-stroke engines. The impeller circulates cooling water through the engine's cooling system and replaces Mercury/Mariner OEM no. 47-22748.
The impeller is manufactured with a flexible neoprene part and a central shaft insert. It has an inner diameter of 11.6 mm, an outer diameter of 32 mm, and a width of 14.4 mm. The design has 6 flexible blades.
The CEF Marine reference is 500309, and the manufacturer code is 309. The impeller is supplied as 1 unit without a documented gasket, key, pump housing, or other mounting parts.
Compatible engine models
The primary compatibility is Mercury/Mariner 6 hp and 9.8 hp 2-stroke outboard motors. It includes Mercury 6 hp with serial number 1408611–1916138 and Mercury 9.8 hp with serial number 1470349–1865778 as well as Mercury MK5, MK6, WH6, and WH6A. OEM-based application data also includes Mercury 3.9 hp with serial number 1655013–2200317.
Impeller selection must be made according to OEM number, engine type, engine power, and serial number. Variants with the same nominal dimensions may be intended for other engine series and should not be considered automatically interchangeable.
Replaces OEM numbers
Direct OEM reference: Mercury/Mariner 47-22748. Documented alternative cross-references are Sierra 18-3012, Mallory 9-45308, GLM 89600, SEI Marine 96-299-03C, Peach Motor Parts PM-47-22748, and REC/Recmar REC47-22748.
1516309
Always check the engine/drive model, serial number, and original part number before purchasing.
Key features
Flexible water pump impeller for the engine cooling system
For documented Mercury/Mariner 2-stroke outboard motors
Primarily for 6 hp and 9.8 hp
Inner diameter: 11.6 mm
Outer diameter: 32 mm
Width: 14.4 mm
6 flexible blades
Flexible neoprene part
CEF Marine reference: 500309
Replaces OEM no. 47-22748
