Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

Radiator help

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Old 09-24-2017, 03:26 PM
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Default Radiator help

Will the base model
Cts radiator work in the v?
My rad has a small crack in the bottom that only leaks if i drive it hard.
So i need a new cheap one for now
Old 09-24-2017, 05:36 PM
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Yes - https://ls1tech.com/forums/cadillac-...l#post19334766.
Old 09-24-2017, 05:39 PM
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Will this one work? I can get it in a day or two it says.
Cause my local parts store wants 220 for a no name one also
https://m.ebay.com/itm/RADIATOR-FOR-...%257Ciid%253A1
Old 09-24-2017, 05:49 PM
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And is there a specific one thats for autos only and for manuals only?
Old 09-24-2017, 06:14 PM
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Think i will order this one instead, i dont think i want a cheap no name radiator, this is the oem ac delco v6 radiator, part number 21512. 134 plus 20 shipped, 154 seems fair.
https://www.wholesalegmpartsonline.c.../89022478.html
Old 09-24-2017, 07:27 PM
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Get one with a life time replacement so you can get a new one in two years........
Old 09-24-2017, 08:07 PM
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Originally Posted by vroom_vroom
Get one with a life time replacement so you can get a new one in two years........
I was gonna order the oem 21512 one, figured that should last atleast ten yrs like the one i had in there did.
That 60 buck ebay one had a lifetime warranty it says, but i dont want it to break in a few weeks or a few months.
Old 09-25-2017, 05:27 AM
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The oem ones are just as bad. Lots of posts that people bought the oem only to pay more and still for nothing.
Old 09-25-2017, 05:44 AM
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Well that sucks, i found the oem V one on amazon, part number 21642, brand new for 147.
So what do u think i should go with then? Cheap for 60ish or get the good oem?
Old 09-25-2017, 09:11 AM
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I replaced my OEM radiator at 150k with a V6 manual replacement model. They're virtually identical with the exception of an additional small tab at the bottom that's not needed. Running a lower temp t-stat will probably extend the life of your radiator.
Old 09-25-2017, 11:05 AM
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I ordered the ac delco 21642, its the one for the V.
Only had one on amazon for that price, 147 shipped brand new
Old 09-25-2017, 11:53 AM
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Good deal. I paid a similar amount (if not exact) for the radiator in mine.
Old 09-25-2017, 12:53 PM
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Originally Posted by BudRacing
Good deal. I paid a similar amount (if not exact) for the radiator in mine.
Yea im like u, i figured if the one in there lasted that long, i will buy the same one.
But lets hope the ******** shipping it dont damage it lol
Old 09-25-2017, 01:46 PM
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For any future reference, the base model is exactly the same for around $60. It does have the trans cooler line bungs on it, but we obviously don't go using those. Save yourself a few dollars for bushing and motor mount replacements instead!
Old 09-25-2017, 03:06 PM
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Old 09-25-2017, 03:09 PM
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Originally Posted by my_99Z
For any future reference, the base model is exactly the same for around $60. It does have the trans cooler line bungs on it, but we obviously don't go using those. Save yourself a few dollars for bushing and motor mount replacements instead!
Yea i know, but i couldnt find one that cheap unless it ws a no name brand from ebay, and i decided i didnt want a cheap radiator so i went with oem since the last one lasted so long.
I figured 147 wasnt bad compared to the 3,4 and 500 prices ive seen everywhere else for it.
And the ac delco 21512, thats the base v6 oem,
cheapest i found that was for 154 shipped.
But i was gonna order the 60 dollar cheap one, then i read posts on here where people say they only lasted a few days or a few weeks, so then i decided to go oem instead.
And i already did the cs mounts and trans mounts but i havent done any bushings yet.

Last edited by Mike ctsV; 09-25-2017 at 03:15 PM.
Old 10-02-2017, 07:53 PM
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Finally got my new oem rad from amazon, it was a lil twisted up, nothing would line up without a lil bit of elbow grease and flexin the new rad into shape.



U can see where the socket broke the corner of my fan blade



Found my socket i lost a few weeks ago during my header install, it ended up between the fan and the radiator, found it when moving the fans from the old one to the new one lol


U can see where one of the top tabs was snapped of sometime during shipping or before, drivers side, allwell, dont have another week to send it back and wait again.





A lil ghetto riggin, its not goin anywhere, and you will never see it by time the plastic cover is on
Old 10-02-2017, 08:15 PM
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The radiator I received was loosely packed and the same tab was missing. I didn't zip tie it or anything. It was in there well enough without it.
Old 10-02-2017, 08:17 PM
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I didnt install these things that cane with it, looks like i got to pull the grille or the bumper, and i never takein either off before, so those will go on oneday if im ever in there i guess lol, what are those for anyways? I see the ones on my car now, there all old and beat up.
Old 10-02-2017, 08:20 PM
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What does your temps run, mines still runnin at 220-230, still seems a bit high, i coulda swore before my rad problems a week ago that it was always around 200, but its still high with the new rad, but it will drop to 200-210 while im driving, but sitting still it gets to 230ish


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