Standard Ignition VG121 EGR Valve Gasket

EGR Valve Gasket for GM HD Trucks

Standard Ignition VG121 is an exhaust gas recirculation valve gasket for select Chevrolet Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 applications. It seals the EGR pipe connection at the middle of the EGR system to help maintain proper exhaust flow and sealing integrity.

Built for emission control service, this gasket supports a precise seal in the EGR assembly on 2004-2005 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD, plus 2005 Chevrolet Silverado 3500 and 2004-2005 GMC Sierra 3500 applications.

Key Features

• Part number VG121 from Standard Ignition
• Exhaust Gas Recirculation (EGR) valve gasket application
• Seals the EGR pipe area by the middle of the EGR system
• Fits select Chevrolet Silverado and GMC Sierra HD trucks
• Engineered under controlled manufacturing processes for emission components

Detailed Description

Standard Ignition VG121 is an emission control gasket used in EGR service on GM heavy-duty trucks. It is made for the EGR pipe connection and helps maintain a tight seal where exhaust gases are routed through the recirculation system. This part cross-references MAHLE F31913 for the same application.

Compatible With 2004-2005 Chevrolet Silverado 2500 HD, EGR Pipe; By Middle of EGR. Compatible With 2005 Chevrolet Silverado 3500, EGR Pipe; By Middle of EGR. Compatible With 2004-2005 GMC Sierra 2500 HD, EGR Pipe; By Middle of EGR. Compatible With 2004-2005 GMC Sierra 3500, EGR Pipe; By Middle of EGR. Standard Ignition VG121 is a direct-fit service part for these listed vehicles.

Common Repair Uses

• Exhaust leak at the EGR pipe connection
• Damaged or flattened EGR gasket sealing surface
• Service work on the EGR valve or pipe assembly
• Emission system sealing issues on GM HD trucks
• Replacement during EGR component maintenance

Installation Notes and Tips

Inspect the mating surfaces before installation and remove any carbon buildup or old gasket material. Confirm the EGR pipe and valve surfaces are clean and flat so the gasket can seat evenly. Use the vehicle-specific fitment notes to verify the correct location before reassembly.

Quality Assurance

Standard Ignition states that its emission components are manufactured with quality control maintained throughout the process, from component production to finished part. VG121 is built as an emission control sealing component for the listed GM truck applications.