MAHLE VS50439 VALVE COVER GASKET SET FOR 2004.5–2010 GM 6.6L DURAMAX

Product Description

MAHLE VS50439 valve cover gasket set restores factory-tight sealing on 2004.5–2010 GM 6.6L Duramax LLY/LBZ/LMM. OE-style molded rubber with integrated grommets resists heat, oil, and vibration to stop seepage around the upper covers—perfect for routine service, leak fixes, and refresh builds.

MAHLE VS50439, Duramax valve cover gasket set, LLY LBZ LMM 6.6L, 2004.5-2010 Silverado Sierra HD, molded rubber valve cover gaskets, Mahle Original diesel gaskets, leak fix kit, GTIN 027067722423, UPC 027067722423

Fitment

• 2004.5–2005 Chevrolet/GMC 2500HD & 3500HD – 6.6L Duramax LLY
• 2006–2007 Chevrolet/GMC 2500HD & 3500HD – 6.6L Duramax LBZ
• 2007.5–2010 Chevrolet/GMC 2500HD & 3500HD – 6.6L Duramax LMM
• One kit services one engine (both valve covers).

What’s Included

• (2) Upper valve cover gaskets with grommets (left & right)

Cross-Reference / Alternatives (Mahle-only, internal)

• MAHLE VS50434 Lower Rocker (Rocker Box) Cover Gasket Set – 04.5–10 LLY/LBZ/LMM
• MAHLE VS50550 Valve Cover & Lower Rocker Cover Gasket Set – 04.5–07 LLY/LBZ
• MAHLE VS50438 Valve Cover Gasket Set – 01–04 LB7
• MAHLE VS50966 Valve Cover Gasket Set – 17–19 L5P

Why MAHLE

• OE-grade molded rubber for long-life sealing under heat & clamp load
• Direct-fit geometry to reduce install time and rework
• Trusted in stock rebuilds, work trucks, and fleet maintenance

Installation Notes

• Clean mating surfaces; install gaskets dry unless GM service info calls for small dabs at timing cover joints
• Torque fasteners in sequence to OE spec; re-inspect after heat cycles if required

FAQ

Will VS50439 fit LLY, LBZ, and LMM?

Yes—this set covers 2004.5–2010 6.6L Duramax LLY/LBZ/LMM.

Does one kit do both valve covers?

Yes—one kit services both upper covers on one engine.

Do I need sealant?

Generally no. Install dry on clean surfaces; follow any GM service manual exceptions at joint corners.

Specifications for Mahle VS50439