the jabsco part # is43210-0001,you guys need to carry a spare kit for the mercruiser.....we went through about a dozen of them in the race boat during the last two seasons.....dont want to cook your motor for a lousey 90 bucks.......and always,always replace these things as a kit....

Sierra has a kit for the Merc Water pump/fuel pump assembly. Part # 18-3150 includes plate, impeller, plastic housing, o-ring and bolts. Lists for around $85 but you should be able to fiind it discounted (I paid $48.50 at a friends bait shop)

Quality looks similar to Merc. I've got 150 hours on it with no problems.

BTW; I carry a spare:rolleyes: