Aluminum Coolant Overflow Tank

elafilos · Sep 24, 2024

Hello peeps!

After my engine swap my mechanic decided that he should overtighten the cap on my coolant overflow tank to a point where he destroyed the threads. Since that was my second tank so far (my mopar cracked around 10 years ago) I thought that it might be a good idea to give it a go buying one of those aluminum ones sold online.

Has anyone tried any of those? They seem to have the exact same design regardless of the seller.

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Thanks!

duderz7 · Sep 24, 2024

Got a link? I've never seen or heard of such a thing?

seafish · Sep 24, 2024

Where are they made?

Are they a direct fit replacement ?

Could be really nice but IMO it all depends on the quality of the welds and fitment.

elafilos · Sep 25, 2024

Found those on ebay. Not sure if it's against the forum terms to share it here, but you can search for Jeep KJ coolant expansion tank.

It seems to be a direct fit (according to the seller), and definitely cheaper than buying a brand new mopar part.

KingKJ · Sep 29, 2024

I've been looking into this recently after my cheap amazon crap broke and has caused way to many problems and I'm interested if it might be something worth doing

burntkat · Sep 30, 2024

If you're replacing the coolant overflow tank, do yourself a favor and use the Dorman part.

PN is in my history

KingKJ · Sep 30, 2024

burntkat said:
If you're replacing the coolant overflow tank, do yourself a favor and use the Dorman part.

PN is in my history

is there any downside to using an aluminum though?
I like how they look and I'd assume they'd be stronger/won't start changing color after a few months

seafish · Sep 30, 2024

IMO, the only problem with aluminum would be the quality of the welds, and since this is apparently "Hecho in China", they are also automatically suspect until someone does a physical inspection on one. And even then, the welds may or may not be the same quality between different tanks. Thats aid, as long as there is a warranty on it, then this might be something to look into.

KingKJ · Sep 30, 2024

seafish said:
IMO, the only problem with aluminum would be the quality of the welds, and since this is apparently "Hecho in China", they are also automatically suspect until someone does a physical inspection on one. And even then, the welds may or may not be the same quality between different tanks. Thats aid, as long as there is a warranty on it, then this might be something to look into.

I'm buying off ebay, would that still be an issue?

seafish · Sep 30, 2024

Maybe, maybe not…why doncha post an actual link so that some of us can check it out ??

KingKJ · Sep 30, 2024

seafish said:
Maybe, maybe not…why doncha post an actual link so that some of us can check it out ??

For 02-07 Sight-glass Jeep Liberty 3.7L Aluminum Radiator Coolant Overflow Tank | eBay

2002-2007 Jeep Liberty 3.7L 226Cu. 1 x Coolant Reservoir. TypeRadiator Coolant Tank. UPCDoes not apply.

www.ebay.com

Like this or similar, there's only a couple options

seafish · Sep 30, 2024

Well if you look at both the neutral and the negative reviews it seems like variable weld quality and fitment are an issue on bout 1 in 10 of those who leave a review.

KingKJ · Sep 30, 2024

seafish said:
Well if you look at both the neutral and the negative reviews it seems like variable weld quality and fitment are an issue on bout 1 in 10 of those who leave a review.

I see, so it may not be the best quality product to buy

KingKJ · Sep 30, 2024

For 02-07 Jeep Liberty 3.7L Alloy Coolant Overflow Reservoir Tank W/Sight-glass | eBay

2002-2007 Jeep Liberty 3.7L 226Cu. 1 x Coolant Reservoir. TypeRadiator Coolant Tank. UPCDoes not apply. We are a manufacturer and w e have our own factory.

www.ebay.com

this is another one that apears to be the same thing, just different brand

Jeeper-Creeper · Sep 30, 2024

Definitely looks better than the plastic tank. I wonder if it has internal chambers like the oem one?

duderz7 · Sep 30, 2024

I'd wait a couple months for it to show up on Amazon for $30 bucks before I'd try one. Of course my stock one is still working just fine at 20 years and 175,000+ miles.

KingKJ · Sep 30, 2024

duderz7 said:
I'd wait a couple months for it to show up on Amazon for $30 bucks before I'd try one. Of course my stock one is still working just fine at 20 years and 175,000+ miles.

I mean my stock one had no problem it just got ugly and we wanted to be able to see coolant level

seafish · Sep 30, 2024

KingKJ said:
it just got ugly and we wanted to be able to see coolant level

I was able to clean mine out really well on the CRD when I had everything drained for the 200k timing belt change.

KingKJ · Sep 30, 2024

seafish said:
I was able to clean mine out really well on the CRD when I had everything drained for the 200k timing belt change.

No, like the plastic yellowed and stained, not somthing cleanable

seafish · Sep 30, 2024

KingKJ said:
No, like the plastic yellowed and stained

Mine was too yet it stilled mostly cleaned.

Aluminum Coolant Overflow Tank

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