Is a 4.3 Mercrusier Waterpump the same as a 4.3 Chevy waterpump ?

[Rcompan]

Is a 4.3 Mercrusier Waterpump the same as a 4.3 Chevy water pump on a 1098 Well raft 4.3

 

[Rcompan]

1998 sorry

 

[alldodge]

Welcome

Is a 4.3 Mercrusier Waterpump the same as a 4.3 Chevy water pump on a 1098 Well caft 4.3

Yes and No
Yes it's the same design and fit as the Chevy but internally the impeller is brass.

Now if you have closed cooling and not open, meaning you have a heat exchanger on the motor using antifreeze, then the Chevy can be used, otherwise you need a marine type

 

[Scott Danforth]

Google marine water pump

 

[Lou C]

Most people working on older boats probably wind up using a Sierra marine pump.