Fel-Pro 72946 Fuel Injection Plenum O-Ring

Fel-Pro 72946 Fuel Injection Plenum O-Ring

Fel-Pro 72946 is a premium fuel injection plenum O-ring for intake sealing service on select Chevrolet, GMC, and Hummer applications. It is built with application-specific materials to support a precise seal where the intake plenum tube connects, helping maintain proper engine sealing on vehicles such as the Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD.

Key Features

• Premium-grade fuel injection plenum O-ring
• Application-specific sealing material selection
• Supports 100% vehicle sealing at the intake plenum tube interface
• Direct-fit service part for select GM truck and van applications
• Fel-Pro part number 72946

Detailed Description

Fel-Pro 72946 is a fuel injection plenum O-ring used at the intake plenum tube sealing point on select 2004-2010 Chevrolet Silverado 2500 HD, 2004-2010 GMC Sierra 2500 HD, 2006-2010 Chevrolet Express 2500, and related GM heavy-duty truck and van platforms. Fel-Pro engineers its sealing products with materials matched to the application so the seal can perform under the demands of intake system service. This part cross-references MAHLE G31914 for the same application.

What It Helps Address

• Intake air leaks at the plenum tube seal
• Vacuum leaks caused by a worn or flattened O-ring
• Rough idle related to intake sealing loss
• Check engine concerns tied to unmetered air entering the intake
• Service replacement for damaged intake plenum tube seals

Installation Notes and Tips

Clean the sealing surfaces before installation and inspect the intake plenum tube for wear, distortion, or contamination. Verify the old seal is fully removed and confirm the replacement O-ring seats evenly during reassembly. This part is listed for N/A position applications and is used on intake plenum tube O-ring service points for the vehicles shown in the fitment data.

Quality Assurance

Fel-Pro sealing products are built around application-specific materials and sealing coverage intended for professional repair use. The brand positions this line around dependable engine sealing performance for service technicians and DIY repairs alike.

Compatible Vehicles

• Fits 2006-2010 Chevrolet Express 2500, N/A
• Fits 2006-2010 Chevrolet Express 3500, N/A
• Fits 2004-2010 Chevrolet Silverado 2500 HD, N/A
• Fits 2007-2010 Chevrolet Silverado 3500 HD, N/A
• Fits 2006-2010 GMC Savana 2500, N/A
• Fits 2006-2010 GMC Savana 3500, N/A
• Fits 2004-2010 GMC Sierra 2500 HD, N/A
• Fits 2007-2010 GMC Sierra 3500 HD, N/A
• Fits 2007 Chevrolet Silverado 2500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 3500 Classic, N/A
• Fits 2007 GMC Sierra 2500 HD Classic, N/A
• Fits 2007 GMC Sierra 3500 Classic, N/A
• Fits 2004-2006 Chevrolet Silverado 3500, N/A
• Fits 2004-2006 GMC Sierra 3500, N/A
• Fits 2006 Hummer H1, N/A