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Discussion Starter · #1 ·
Hi, my first post so greetings all.

I've kind of become the neighborhood "mechanic" after working on several cars we have, and an elderly neighbor asked me if I can help him replace the thermostat on his 2003 Sentra GXE. Pretty straightforward stuff.

I was going to order a Stant from RockAuto, which includes the round thermostat gasket and comes with a jiggle valve and uses the standard 170F temp. This is a decent one for this model, right?

I was just wondering if I need to replace the housing gasket as well, and if so whether with a precut one and if so which, or with RTV, and if the latter which kind? I have a bunch of different Permatex RTVs including the one for water pumps.

He also wants to replace the spark plugs, which he says are the original ones. Any rec? Copper NGK ok or anything RockAuto sells? Should he replace the wires as well while he's at it?

Thanks all.
 

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Discussion Starter · #3 ·
Thanks. I actually bought him a Duralast, which based on what you wrote I'm guessing is an even worse pick than Stant. It was the only thing Autozone had that wasn't expensive. I don't think he drives the car much so it probably won't matter either way. It's what he was going to buy based on the store's rec.

I was going to get NGKs, just making sure. They're the basic copper, right, nothing fancy like P or I?

And, housing goes on dry, no gasket or RTV? Never heard of that.
 

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Discussion Starter · #5 · (Edited)
Thanks. He decided to go with the OEM thermostat per this advice, and I'll tell him about the plugs.

However, for various reasons I don't think he needs plugs that'll last another 100k miles. Would the more basic platinum plugs or even copper work just as well for the next 20k miles or so, and would he notice any difference or decreased performance, gas mileage, engine reliability, etc.?

RockAuto recommends new boots. Not needed if existing ones look ok and car runs fine?

He also needs a new radiator upper and lower hose as they felt weak and iffy to me. Is any decent aftermarket brand ok, like Gates or AC/Delco, or also OEM?

Finally, he's due for a new air filter too. Same question, e.g. Wix or OEM.
 
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