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#4535260 - 10/06/17 09:44 AM quality difference in radiator caps
edwardh1 Offline


Registered: 01/17/03
Posts: 2941
Loc: Coastal South Carolina
toyota oem (is that Denso?) $15 from Amazon , dont know what the dealer wants.
stant and gates are in the $5-$7 range

any opinions on stant vs gates?

or how to find the toyota 2004 highlander v6 highlander oem stock number? amazon lists the numbers on the stats they sell, but don't say what it fits.
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#4535271 - 10/06/17 10:09 AM Re: quality difference in radiator caps [Re: edwardh1]
Leo99 Offline


Registered: 03/30/14
Posts: 3039
Loc: NJ
My n=1 story: Replaced the factory cap on my Rav4 last year with a Stant from Amazon. Cap arrived looking very generic and then failed 9 months later. Coolant was evaporating. I'd stick with the OEM in the future.
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#4535285 - 10/06/17 10:32 AM Re: quality difference in radiator caps [Re: edwardh1]
JustinH Offline


Registered: 04/17/04
Posts: 5174
Loc: Texas
For a 7 dollar savings I would buy an OEM cap.

However I have never had a problem with a stant cap either.
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#4535294 - 10/06/17 10:44 AM Re: quality difference in radiator caps [Re: edwardh1]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2734
Loc: Wet side WA
Well the cap on my Corolla is only 14 years old my guess is its going to last until the car stops running. But I did have to add a cup of coolant last year? Since then it hasn't dropped?
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#4535301 - 10/06/17 10:56 AM Re: quality difference in radiator caps [Re: edwardh1]
doitmyself Offline


Registered: 06/03/02
Posts: 6213
Loc: MI
RE: finding OEM part number

Do the online OEM parts suppliers have the correct information regarding OEM part numbers?:

For instance, I plugged in 2004 Highlander at this site: https://www.toyotapartsdeal.com/parts-list/2004-toyota-highlander/radiator-water-outlet.html?Filter=(1=1MZFE;6=4FC;7=05S)

Maybe 16401-31520, $13.xx on Ebay delivered.

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#4535315 - 10/06/17 11:21 AM Re: quality difference in radiator caps [Re: edwardh1]
Yah-Tah-Hey Offline


Registered: 05/26/14
Posts: 3396
Loc: Columbus,Nebraska
OEM all the way.

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#4535336 - 10/06/17 11:41 AM Re: quality difference in radiator caps [Re: edwardh1]
Drew99GT Online   happy


Registered: 10/11/02
Posts: 22125
Loc: Colorado Springs
I've had a Stant on my Corolla for over 10 years; still works fine.

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#4535359 - 10/06/17 12:03 PM Re: quality difference in radiator caps [Re: edwardh1]
nthach Offline


Registered: 01/02/04
Posts: 3887
Loc: California
For Japanese cars, Denso/T-Rad/Calsonic OEM no question. In some cases, a Stant/Gates does work fine. The old Nissan Quest my parents had sad a Stant cap until we unloaded it, it held up to pressure. A Subaru I worked on had a Stant instead of the OEM Calsonic and it worked fine. Toyota and Honda tend to be more finicky for caps.

The Americans use Stant or Indian-made TVS caps.

Amazon does sell fakes, but it's actually easy to tell a fake/real Denso apart.

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#4535409 - 10/06/17 01:06 PM Re: quality difference in radiator caps [Re: edwardh1]
mechjames Offline


Registered: 01/16/08
Posts: 516
Loc: Richmond, BC, Canada
Stant and gates are the exact same part, they rebox each other.
I haven't had a problem with either of them.
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#4535430 - 10/06/17 01:54 PM Re: quality difference in radiator caps [Re: edwardh1]
Superflop Offline


Registered: 07/01/09
Posts: 420
Loc: Seattle
I buy motorad personally

Yeah the afore mentioned TVS brand is oem for a lot of makes


Edited by Superflop (10/06/17 01:57 PM)
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#4535443 - 10/06/17 02:12 PM Re: quality difference in radiator caps [Re: edwardh1]
THafeez Offline


Registered: 08/15/16
Posts: 651
Loc: New Jersey
DENSO
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#4535528 - 10/06/17 03:40 PM Re: quality difference in radiator caps [Re: edwardh1]
PandaBear Offline


Registered: 08/05/02
Posts: 14211
Loc: Silicon Valley
Stant makes for Gates on a lot of Japanese models.

Use OEM. My Stant cap stuck shut and caused a head warp / head gasket problem. I called them and they basically said they are only responsible for the cap cost and can send me a replacement cap. Don't take a chance for $10 saving like me.
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#4535678 - 10/06/17 07:12 PM Re: quality difference in radiator caps [Re: edwardh1]
GMBoy Offline


Registered: 11/22/04
Posts: 7702
Loc: Texas
Stay away from GATES!!! I had 2 different failures on 2 different vehicles. First the caps are CHEAPLY made and do not fit correctly. Secondly - they will leak. Happened to me on 2 different applications: Honda Civic and Honda Accord. I'm glad I caught the issues before giving the car back to the owners. They literaly lasted just days!

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#4535739 - 10/06/17 08:37 PM Re: quality difference in radiator caps [Re: edwardh1]
mclasser Online   content


Registered: 04/13/13
Posts: 2226
Loc: The Northeast
OEM or bust. Not worth trying to save a few bucks on a part that can potentially overheat the engine.

When I changed my cap last year I went straight to the dealer parts counter.


Edited by mclasser (10/06/17 08:38 PM)
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#4535745 - 10/06/17 08:43 PM Re: quality difference in radiator caps [Re: edwardh1]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I will never trust Stant again after I had one of their brand new thermostats that wouldn't open up in a pan of boiling water. Certain critical parts I'll stay with O.E.M.

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