LQ4 crossover coolant pipes

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Aug 22, 2011 | 07:19 PM

jks67ss396

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LQ4 crossover coolant pipes

Hey guys

Im putting my lq4 back together and need to know what to get...

Do i just get 4 little gaskets for the crossover?

GM part 12551933

or do i need:

12551933 engine coolant air bleed pipe seal, two required LQ4.
12602540 engine coolant air bleed pipe cover, two required LQ4.

Ive heard multiple versions...

and just to be sure, i can reuse the crossover pipes, right?

thanks!!

Aug 22, 2011 | 07:33 PM

99C5Coupe

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I just ordered and received 12551933 from RockAuto, they are the coolant crossover gaskets and come four in a package, I ordered four of course. Mine is LS1 so I don't know what LQ4 will need.

Aug 22, 2011 | 07:35 PM

Old Geezer

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My 05 LQ has 2 block offs at the rear and the pipe at the ft. The seals are the same for all 4 locations...

Aug 22, 2011 | 07:36 PM

jks67ss396

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so it sounds like i need one order of 12551933, and that will do all 4 corners?

thanks gentlemen!

Aug 22, 2011 | 07:39 PM

99C5Coupe

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Yes sir, that is correct.

Aug 22, 2011 | 07:46 PM

jks67ss396

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hmmm

so it seems that DORMAN Part # 56390 contains 4 of these guys, but the 12551933 part number is per seal, so id need 4 of them at 5-7/each....

I think ill stick with the dorman

Aug 22, 2011 | 08:25 PM

99C5Coupe

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Quote:

Originally Posted by jks67ss396

hmmm

so it seems that DORMAN Part # 56390 contains 4 of these guys, but the 12551933 part number is per seal, so id need 4 of them at 5-7/each....

I think ill stick with the dorman

Yes, Dorman 56390 is the same as 12551933, both are 4 per package of 1

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