2001-2016 Duramax Grade C Passenger Side Head Gasket (55026)

Ensure a professional-grade seal during your engine overhaul with the Mahle Grade C Passenger Side Head Gasket. This updated gold-series gasket is the newest OE-grade replacement for the 2001–2016 Duramax, manufactured by Elring—the global leader in original equipment production. Featuring a 1.05mm thickness, the Grade C gasket is the most common service replacement, specifically engineered to handle the high combustion pressures of the 6.6L diesel engine. Whether you are repairing a high-mileage LB7 or a late-model LML, this gasket provides the reliability and precision fit required for a long-term, leak-free repair.

Part Number: 55026

Supersedes Part Number: 54582

• OEM Manufacturer: Produced by Elring, the globally recognized original equipment supplier for Duramax engines.
• Grade C Thickness: Precision-engineered at 1.05mm, the standard thickness for most service and repair applications.
• Updated Design: The latest "Gold" series revision offers improved sealing characteristics over older part numbers.
• Passenger Side Specific: Clearly stamped with "R" to ensure correct identification and installation on the right bank.
• High-Pressure Seal: Designed to withstand the extreme cylinder pressures and thermal cycles of diesel performance.

• (1) Mahle Grade C Passenger Side Head Gasket

• Thickness Verification: Always check with your engine builder or measure piston protrusion to verify the 1.05mm thickness meets your requirements.
• Installation Tip: To prevent future failures, it is highly recommended to upgrade to high-strength head studs during installation for increased clamping force.
• Identification: Gaskets are side-specific; ensure you have the matching "L" driver side gasket for a complete engine set.

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