5.7L Vortec Intake Breather assembly Gasket - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shultzee13 · 02-25-2019, 10:21 PM

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

**Palf70Step** · 02-26-2019, 07:55 AM

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.

speedygonzales · 03-06-2019, 06:57 PM

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

**AussieinNC** · 03-22-2019, 05:22 PM

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...

02-25-2019, 10:21 PM	#1
shultzee13 Registered User Join Date: Jan 2012 Location: Tyler Texas Posts: 223	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

02-26-2019, 07:55 AM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,608	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. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

03-06-2019, 06:57 PM	#3
speedygonzales Registered User Join Date: Jan 2006 Location: Smithfield, VA Posts: 1,501	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 __________________ 99 Z71 (98 body style) Pride and joy

03-22-2019, 05:22 PM	#4
AussieinNC Moderator Join Date: Jun 2017 Location: Cherryville, NC Posts: 2,153	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... __________________ Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2012 Chevy Equinox



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