MAHLE F39394 EGR TUBE TO EGR VALVE GASKET FOR 06–10 GM DURAMAX

Product Description

Seal up the EGR joint that loves to leak on LBZ/LMM trucks with the MAHLE F39394 EGR tube to EGR valve gasket for 2006–2010 GM 6.6L Duramax. This OE-style multi-layer steel (MLS) gasket restores a tight seal between the EGR tube and EGR valve, helping prevent exhaust leaks, soot streaking, lost turbo response, and EGR-related trouble codes on tuned, towed, or daily-driven trucks.

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Fitment

• 2006–2010 Chevrolet Silverado 2500HD / 3500HD – 6.6L Duramax LBZ/LMM
• 2007 Chevrolet Silverado 2500HD / 3500HD Classic – 6.6L Duramax
• 2007–2010 GMC Sierra 2500HD / 3500HD – 6.6L Duramax LBZ/LMM
• 2007 GMC Sierra 2500HD Classic – 6.6L Duramax
• 2006–2010 GM 6.6L Duramax LBZ/LMM truck applications as equipped with EGR system
• 2008–2010 Chevrolet Express 2500/3500/4500 – 6.6L Duramax
• 2008–2010 GMC Savana 2500/3500/4500 – 6.6L Duramax
• 2006 Hummer H1 – 6.6L Duramax (EGR-equipped applications)
• Compatible with GM EGR coolers 98034351, 98006483, 98034354, 98042441 where used at the tube-to-valve joint

Cross Reference / Related Mahle Parts on CPP Diesel

• MAHLE F31909 – EGR Tube to EGR Valve Gasket (2004.5–2007 LLY/LBZ)
• MAHLE F31910 – EGR Valve Gasket (2006–2010 LBZ/LMM)
• MAHLE F31912 – EGR Valve Gasket (2006–2010 LBZ/LMM)
• MAHLE G33742 – EGR Cooler Gasket (2011–2016 LML)
• MAHLE F31903 – Exhaust Manifold to Up-Pipe Gasket (2001–2016 Duramax)

What’s Included

• (1) MAHLE F39394 EGR tube-to-EGR valve gasket

Install Notes

• Clean both mating surfaces and remove all old gasket material and soot.
• Verify EGR tube and valve flanges are flat and properly aligned.
• Install gasket dry unless otherwise specified by OEM procedure.
• Torque fasteners to factory spec and re-check after initial heat cycles on high-mileage or performance applications.

FAQ

Will this gasket fit my 2006–2010 Duramax?

Yes. MAHLE F39394 is designed for 2006–2010 GM 6.6L Duramax LBZ and LMM engines in Silverado/Sierra HD trucks, plus many Express/Savana van and medium-duty applications that use the OE EGR tube-to-valve configuration listed in the fitment section.

What joint does this gasket seal?

This gasket seals the connection between the EGR tube and the EGR valve. It is not the valve-to-intake or cooler-to-tube gasket—those use different Mahle part numbers such as F31910 and F31912.

Is this an OEM-quality part?

Yes. MAHLE builds F39394 to OE specifications with multi-layer steel construction for long-term heat and corrosion resistance in diesel EGR service.

How many gaskets are included in the box?

One gasket. Order additional quantities if you’re servicing multiple engines or keeping spares on hand.

Do I need to use sealant with this gasket?

Normally no—this MLS gasket is designed to be installed dry on clean, flat flanges. Only use sealant if explicitly called out in the factory service information.

Specifications for Mahle F39394