Looking for Mercruiser Thermostat Housing

[spareparts]

I think that will work, hard to tell from your previous pics, but did the original housing have the same # of hose fittings? If it did, I think it will interchange. you have the big hose inlet from the raw water pump, big hose inlet from the circulation pump, 2 small outlets that go to the bottom of the manifolds, 2 small outlets with the restriction balls that go to the riser. Looks like you have a match. The only thing that might be an ise, it appears the hoses to the bottom of the manifolds on your original style housing are 3/4 with the new one has hoses that are 1". You night have to swap hoses to the manifolds

[Skools Out]

yes they both do. what were you saying about the lower holes mine has hoses hooked up there. the 2 hoses with the balls goes to the risers

[spareparts]

mercruiser used molded hoses for the manifolds that had big ends where they hooked up to the housing( only bigger at the end), the original one looks like it uses smaller hoses(only on the end) than the one you are looking at

[Skools Out]

got the part today it looks new. the hose fittings are the same size and the right number of outlets. it has a 160 thermostat the old was a 180 the 160 should be fine on a carb motor right? i know on my vette and tahoes the cooler the better was on my old camaros and chevelles too.

[THEFERMANATOR]

143 is for old school carb engines, 160 is for the modern carb engines and EFI's, and 180 is for closed cooling. The 160 is the one to go with for better idle quality and performance. I bet that 180 T-stat sure made alot of steam on a cool day with it running.

[spareparts]

Ferm beat me too it, I personally never ran the 180s in a closed system(160 on 1/2 cooled, 143 on completely ccoled), I always used the 143 on carb motors, 160 on EFI( you can do more damage running an EFI cold than hot)

Glad the hose were the right size, it can get expensive replacing molded hoses