Overheat Switch Merc/Mariner 40HP 4 Cyl

Moody Blue

Captain
Joined
May 24, 2004
Messages
3,136
Can anyone tell me the difference between a Mariner 40HP 4 cyl and a Mariner 45HP 4 cyl ? I need a new overheat switch for the 40HP but have only been able to find a replacement for the 45HP (not thru dealers). The dealers won't or can't tell me if the two are compatible. I'm hoping someone on this forum might be a little more informed. Anyone ?
 

WillyBWright

Fleet Admiral
Joined
Dec 29, 2003
Messages
8,200
Re: Overheat Switch Merc/Mariner 40HP 4 Cyl

I believe the sensors are the same, but the one on the 45 might have a ring terminal where the 40's would have a bullet connector. As long as they both screw into the same place, they should have the same heat rating.
 
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