Towncivilian wrote:That doesn't sound right. All of the 2001-2004 3.5L automatic trans use
the same thermostat. The QX4's engine is identical to the Pathfinder's, except the top plastic engine cover which says "Infiniti QX4" I believe.
hussain00 wrote:Towncivilian - If you look at the FSM for 2002 Infiniti QX4, on LC-18, it will show a picture of the thermostat which is attached to a housing assembly? This part is also shown on the infinitipartsusa.com.
InfinitiEric - Thank you so much! i will try them out. Are the parts sold on InfinitiPartsUSA.com made to OEM specification or are genuine Nissan parts?
Thanks you guys!!
not to speak for TownCivilian, but it's just a housing.
I think the Thermostat should be installable into the housing.
Personally, I don't think you need to replace the housing each time, since to my knowledge, there aren't any moving parts in there.
However, you should consider replacing the thermostat housing gasket, of course.
I can't see why they (Nissan) would build 2 different parts of the same purpose for the same engine.
Nonetheless, I would encourage you to do what your gut tells you, and just buy the Infiniti one just to be for sure. I'm just saying that's it's a bit peculiar.