The Thermostat I bough looks funny

[Realgun]

The Thermostat I bough looks funny. I was replaceing the T-stat today and the T-stat I got looks smaller that the old 1 and does not fit well in the housing am I missing something?<br /><br />On this page you will see the 403S I bought but the T-stat I took out looks like the 422.<br /><br />I have a 1988 Force 85HP.<br /><br />In replaceing the Tstat it did not fit as tighly and I would like and seems to wiggle out of the hole as I replace the cover.

 

[rodbolt]

Re: The Thermostat I bough looks funny

cause you was on the OMC page . try this number at any napa store, 18-3559. its the 110* t-stat. the 18-3557 is a 143* look carefully at your old one. it should be marked. the force part# for the 110* is F528068 and the 143* is F335068

 

[Realgun]

Re: The Thermostat I bough looks funny

Looks like I will be heading to NAPA. For the 110 degree t-stat. Makes me mad as there are places that have the 403 as a force product. Also if the were a ring that fits on the 403 I have it would work.<br />THX Rodbolt

 

[rodbolt]

Re: The Thermostat I bough looks funny

realgun<br /> in the 90's after brunswick bought US Marine they started chaning to the merc t-stats. most of wich share the same physical diminsions as the OMC t-stats.<br />in fact for years I put OMC self flushing t-stats in merc v6 cause they worked better.they even used the same rubber seal as some of the OMC stuff.

 

[scotiany]

Re: The Thermostat I bough looks funny

rodbolt, question, does NAPA have the Tstat for a '70 55 hp Chrysler 554HA?

 

[rodbolt]

Re: The Thermostat I bough looks funny

not that my old parts book shows. but if you can get the part number from someplace, a merc dealer may still have it, you can cross the numbers.

 

[Realgun]

Re: The Thermostat I bough looks funny

I am looking at the NAPA catalog and it say I need the 18-3553 Tstat. Thats not good!