Apex AMS11643 Fuel Injection Plenum Gasket Set - Upper

Fuel Injection Plenum Gasket Set for Upper Intake Sealing

The Apex AMS11643 fuel injection plenum gasket set is made for upper intake sealing on a wide range of GM and Saab applications. It is a direct-fit sealing solution for vehicles that need a reliable replacement during intake service, plenum removal, or vacuum leak repair.

• Fuel injection plenum gasket set for upper intake sealing
• Fits a broad range of 2004-2012 applications across Chevrolet, Cadillac, Buick, Pontiac, Saturn, Saab, and Suzuki
• Direct replacement for upper plenum gasket service
• Supports proper intake sealing during maintenance and repair
• Part number: AMS11643

Detailed Fitment and Application

Compatible With upper intake service on vehicles such as the 2008-2012 Chevrolet Malibu, 2010-2011 Cadillac CTS, 2004-2011 Cadillac SRX, 2008-2011 Cadillac STS, 2011 Saab 9-4X, 2010-2011 Saab 9-5, 2008-2010 Saturn Vue, 2004-2009 Cadillac CTS, 2008-2009 Chevrolet Equinox, 2007-2009 Pontiac G6, 2008-2009 Pontiac G8, 2008-2009 Pontiac Torrent, 2006-2009 Saab 9-3, 2007-2009 Saturn Aura, 2007-2009 Suzuki XL-7, 2005-2008 Buick LaCrosse, 2005-2007 Cadillac STS, and 2004-2006 Buick Rendezvous. The Apex AMS11643 is built for upper plenum sealing where intake leaks can affect drivability and engine performance.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Addresses

• Upper intake manifold or plenum vacuum leaks
• Rough idle caused by sealing loss at the intake
• Air leaks after intake manifold service
• Check engine light conditions related to intake sealing
• Loss of engine smoothness from deteriorated plenum gaskets

Installation Notes and Tips

Clean the mating surfaces thoroughly before installation and inspect the intake components for warpage, cracks, or contamination. Confirm the upper-position application and verify vehicle fitment by year, make, and model before assembly. For best results, follow the service procedure for the specific Chevrolet Malibu, Cadillac CTS, or other listed application.

Quality Assurance

Apex replacement sealing components are selected for service applications where accurate fit and dependable intake sealing matter. Part number AMS11643 is cataloged for upper plenum use across the listed vehicle applications.