and a loose or cracked physical connection
Key indicators of a worn or failing water pump include the engine overheating at low RPMs
The serial number range is the most accurate way to confirm fitment
Install the new impeller by turning the driveshaft clockwise while pushing down to correctly orient the vanes
Package includes 12 pins for multiple replacements or to keep as spares
Water Pump Repair Kit – Fits Mercury/Mariner Outboards & MerCruiser Alpha One (Replaces 46-96148Q8, 46-96148A8, 46-96148T8) 140HP and a loose or crackedProduct Details This comprehensive Water Pump Repair Kit is a direct fit replacement for a wide range of Mercury and Mariner outboards, from 65 HP 4 cylinder models up to V 6 engines using short vane impellers. It is also designed for MerCruiser I, R, MR, and Alpha One stern drives with serial numbers from 2491586 to 0D469858. This kit provides a direct interchange for Mercury part numbers 46 96148A8, 46 96148Q8, 46 96148T8, as well as Sierra 18 3217,