This replaces the original OEM with 214k miles. This has the built in gasket which is so easy. Plus, I bought a new thermostat housing on this site. Great products together! My housing bolts broke off in the water pump! Good thing I replaced that too with a new OEM one. Best price for that was found on this sight too.

Great product, price, and fast shipping

If the original thermostat housing is pitted hit it with a wire wheel and spread permatex thermostat sealant on the surface with a credit card to flatten it out. Just a thin layer. Let it dry while you pull the old pump and install. Never had a leak this way.

Replaced the old tin outlet with this billet thermostat water outlet. It installed nicely with the recessed allen driven bolts and most importantly sealed perfectly with only the rubber thermostat seal. Recommended.

Thermostat fits and works great. Love the built in gasket. Topped off with the riffraff billet housing which I highly recommend everyone to do as well.

Fit well and like the updated gasket. Sealed right up and good replacement for my old thermostat that was stuck open and not letting the truck get up to proper temeratures.

I bought a new lifetime warranty Murray water-pump from O'Reilly's. This thermostat with the seal around it not fit into the new water-pump. I had to remove the seal and use 100% Silicone to seal the housing to the water-pump. It would probably be best to purchase this thermostat, the billet housing and the new water pump ALL from the same company that guarantees they will work together to seal. No leaks so far with the silicone.

This thermostat has a built in rubber gasket. There is no need for an
o-ring to seal the thermostat housing. I used a little Sil-glyde on the thermostat gasket during assembly----Yeah no leaks!

Great OEM part fit was perfect.