Mahle G31479 Exhaust Gas Recirculation (EGR) Valve Gasket

Mahle EGR Valve Gasket for GM Applications

Mahle G31479 is an exhaust gas recirculation (EGR) valve gasket made with graphite for a reliable seal between the valve and the throttle body/EGR adapter. It is built for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles from 1996-1999, including Lumina, Monte Carlo, Grand Prix, and Grand Am applications.

Key Features

• Graphite gasket material for sealing at the EGR valve interface
• Fits valve to throttle body/EGR adapter locations
• OE-style sealing solution from Mahle
• Direct replacement part number G31479
• Cross-reference: FEL-PRO 70790
• Cross-reference: General Motors 24506439

Detailed Description

Mahle G31479 is an EGR valve gasket used in emission control service where a tight seal is needed between the EGR valve and the throttle body/EGR adapter. The graphite construction helps maintain sealing performance in high-temperature exhaust gas recirculation paths. This part number is listed for a range of GM cars and vans, including Chevrolet Lumina, Chevrolet Monte Carlo, Pontiac Grand Prix, and Oldsmobile Silhouette models.

For buyers searching for a Mahle G31479 EGR valve gasket, this part supports common repair needs on 1996-1999 GM platforms where exhaust leaks or damaged gasket surfaces are present. It is also a fitment match for Buick Century and Malibu-era applications that use the same valve-to-adapter sealing setup.

What This Part Helps Address

• Exhaust leaks at the EGR valve mounting surface
• Rough idle caused by a leaking EGR seal
• Check engine light concerns related to EGR flow issues
• Loss of sealing after gasket removal during service
• Carbon seepage around the throttle body/EGR adapter joint

Installation Notes and Tips

Clean both mating surfaces before installation and remove carbon buildup from the EGR valve and adapter area. Verify the gasket shape and port alignment against the removed part before assembly. This gasket is listed for valve to throttle body/EGR adapter use, so confirm the vehicle’s EGR mounting style before ordering. Compatible vehicle coverage includes 1996-1999 Chevrolet Lumina, 1996-1999 Chevrolet Monte Carlo, and 1998-1999 Pontiac Grand Prix applications.

Quality Assurance

Mahle gaskets are supplied as OE-style sealing components trusted by OEMs and technicians worldwide. Mahle G31479 is built to meet the sealing demands of emission control service on select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles.