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Old 02-25-2019, 10:21 PM   #1
shultzee13
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5.7L Vortec Intake Breather assembly Gasket

Underneath the breather assembly hose where it connects to the throttle body there is a round orange gasket. Mine is gone.
Does anybody have a party number or where to buy?

Mine is gone.

1999 suburban OBS 5.7L RWD.

I am getting codes PO171/174 and I am thinking there is where it is sucking air.

Thanks
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Old 02-26-2019, 07:55 AM   #2
Palf70Step
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Re: 5.7L Vortec Intake Breather assembly Gasket

I normall use spray carb cleaner and spray the areas where I think it is leaking to see if how it run changes. If it does that is where the leak is.
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Old 03-06-2019, 06:57 PM   #3
speedygonzales
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Not gonna find it

Not only is that O ring not available. Neither is the original elbow the oring was in.

Why not just put a bead of RTV around the inner area where the o ring would be and seat it and leave it. When it dries, if you need to remove it, it will peel off and you can always replace it.

I noticed the K&N filter assembly has an elbow that attaches to the throttle body. Perhaps they have replacement parts for their assemblies.

Part number 57-3013-2
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Old 03-22-2019, 05:22 PM   #4
AussieinNC
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Re: 5.7L Vortec Intake Breather assembly Gasket

Take the elbow where the O ring seats to local parts store...they usually have a selection of O rings...try and find a Viton one...usually Orange or Blue,,,rather than a cheap black one....

Just make sure the section thickness is correct....too thin and it wont seal, too thick and it wont fit into the port....

The original O rings haven't been available for a while now...

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