The marine ones have some parts that are more corrosion resistant. Changing
them is the same.

"Jim Kelly" wrote in message
...
Nope, the process is the same.

James Gemmill wrote:

Is it any more difficult to change the recirculating pump on a 5.0
liter merc. engine than on an automobile? Mine went out last weekend
and I am thinking of changing it myself. Any caveats?

Thanks in advance.