Water-Pump Impeller: Priority One

The Alpha One drive pump is easy to access, but the pump for a Bravo drive is mounted low on the engine, and all five bolts that hold the assembly together come in from the rear. Later-model Bravo-drive-equipped engines feature water pumps that have brass housings, which can be serviced by replacing the impeller only, unless the brass also is deeply scored. With either housing, the job isn’t much fun.

“The hard part is getting to it,” said Leone, who also has taught at Marine Mechanics Institute in Orlando. “In some applications, you can get them up out of the way and sit up on top and do it in your lap. Some of them you have to change from inside the bilge.”
Mercruiser alpha 1 water pump kit
Sign In or Register to comment.