Gasket name on top of throttle body? why is it there?

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Jan 12, 2006 | 06:40 PM

Critter

Thread Starter

Registered User

Joined: May 2001

Posts: 1,511

From: fort worth/burleson Tx

Gasket name on top of throttle body? why is it there?

took apart tb today to clean it and the intake. noticed the gasket on the top of the throttle body was in really bad shape. under the plate on top has 6 star type screws in it.

what is it called because i can't find one?

what is the cavity under it for?

Jan 12, 2006 | 09:51 PM

speed_demon24

Registered User

Joined: Mar 2002

Posts: 3,245

From: Ocala, Florida

Re: Gasket name on top of throttle body? why is it there?

I think its for the IAC if i remember correctly. I just used RTV on mine and it sealed fine.

Jan 12, 2006 | 10:03 PM

Injuneer

Administrator

Joined: Nov 1998

Posts: 71,110

From: Hell was full so they sent me to NJ

Re: Gasket name on top of throttle body? why is it there?

No... the plate covers the passage that leads from a port in front of, and between the TB bores, that leads to the upper hose connection on the passenger side of the TB. That hose supplies air to the passenger side valve cover, to be pulled through the crankcase and lifter valley by the PCV valve on the driver's side of the intake.

The gasket is available in a "kit" that includes the gasket for the top cover plate, and another for the lower coolant/IAC plate. From Shoebox's website:

94-97 top and bottom throttle body gaskets:
AC-Delco # 40-743 17113074
$4.87