This water pump impeller for Mercury/Mariner outboard motors from CEF Marine is designed for select 3.5, 3.6, 4, 7.5, and 9.9 hp 2-stroke engines from 1980. The impeller creates water flow through the engine's cooling system, helping to protect the engine against insufficient cooling and overheating.
The impeller has 6 flexible blades and measures 32 mm in outer diameter and 14.35 mm in height. The nominal shaft hole has an inner diameter of 11 mm. This dimension is important when selecting spare parts, as similar impeller models may have nearly the same outer dimensions but a larger shaft hole.
The construction consists of flexible rubber/elastomer with a black finish and a Single Flat Drive. The item is supplied as a single impeller and is not a complete water pump kit. Gaskets, pump housing, wear plate, and loose keys are not specified as included.
The CEF manufacturer number is 500314, also listed as IMP-500314. The impeller replaces Mercury/Mariner OEM no. 47-68988 and 47-89980. The former number 47-89980B has also been replaced by 89980. Documented aftermarket cross-references include Sierra 18-3054, Mallory 9-45304, and GLM 89800.
1516314
Please check the OEM number, engine horsepower, and the nominal 11 mm shaft dimension carefully before ordering. The engine model, year, and serial number must correspond to the specific installation.
Key features
For Mercury/Mariner 3.5 / 3.6 / 4 / 7.5 / 9.9 hp 2-stroke from 1980
6 flexible impeller blades
Inner diameter: 11 mm
Outer diameter: 32 mm
Height: 14.35 mm
Single Flat Drive
CEF manufacturer number: 500314 / IMP-500314
Replaces OEM no. 47-68988 and 47-89980
Always check the engine/drive model and original part number before purchase.
