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Old 05-08-2013, 08:40 PM   #11
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Default Thank you for the replys

No leaks so far. I am guessing that the new Dorman orings are bigger than the Dorman old ones. However, if they leak down the road I will take the advice and pop on the AC Delco ones...
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Old 05-09-2013, 05:00 PM   #12
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I have not had to order these myself since the Fel-PRO ones I used have not leaked, but if ever needed, these should be the correct Delco O-Rings.
ACDELCO Part # 1534066
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Old 05-09-2013, 05:29 PM   #13
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Quote:
Originally Posted by WilliamE View Post
I have not had to order these myself since the Fel-PRO ones I used have not leaked, but if ever needed, these should be the correct Delco O-Rings.
ACDELCO Part # 1534066
My 2000 Leabre has 2 elbows...they are different sizes so I assume they take 2 different orings ??
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Old 05-09-2013, 07:13 PM   #14
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My 2000 Leabre has 2 elbows...they are different sizes so I assume they take 2 different orings ??
On the upper elbow the two are the same, as well as one of the o-rings on the lower one, there is one o-ring on the lower that is bigger than the rest, that one does not seem to cause any leaks, the dorman o-ring actually worked better than the one that came with the Fel-PRO kit, the one that came with the Fel-PRO LIM Kit seemed a bit smaller to me.
I'm not sure which Delco o-ring to get for replacing that larger one, I'll try to find it for you just in case you do not want to use the Dorman one.
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Old 05-11-2013, 10:11 AM   #15
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Default I never had problems with the larger 4th oring.

However, that would be great to have its part number (just in case).
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Old 05-11-2013, 10:31 AM   #16
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Default Thanks again to everyone for replying.

This is a great forum.
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Old 05-11-2013, 11:08 AM   #17
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Leave it to William, he'* like a Bloodhound when it comes to looking for parts.
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Old 05-11-2013, 03:04 PM   #18
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He he, thanks Mike, I do know how to sniff em out.

I did a little research, and I am pretty sure I found the right replacement o-ring from Nalley Buick Parts for $2.18 plus shipping.
This link should work, if not let me know.
ENGINE ASM-3.8L V6 PART 3 FRONT COVER AND COOLING. Fits: 2000 Buick Lesabre CUSTOM | Nalley Buick GMC Brunswick

PARTS
Larger O-Ring is listed in the diagram as #343 GM 24502846


The other O-Ring on the lower coolant elbow is listed on the diagram as #343 , it is listed as GM 25537068, and they have another number listed which is 1534066, which just happens to be the part number I posted for the upper coolant elbow o-rings, so it appears they are the same after all.
I cross referenced the GM 25537068 upper coolant elbow o-rings to see if they were also the Delco part# 1534066 like I thought, and sure enough they are.
There was no alternate number listed for the larger o-ring.
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Old 05-11-2013, 04:56 PM   #19
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See, the bloodhound prevails!

Go get yourself a Scooby Snack Will!
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Old 05-11-2013, 09:04 PM   #20
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William - you are awesome. Thanks!
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