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MAHLE Wave-Stopper Cylinder Head Gasket (Grade C) – 2001-2016 Duramax 6.6L
The MAHLE 5459X Wave-Stopper Cylinder Head Gasket (Grade C) is a premium multi-layered steel (MLS) replacement designed for 2001-2016 GM 6.6L Duramax engines (LB7, LLY, LBZ, LMM, and LML).
It features MAHLE’s Wave-Stopper technology—concentric waves in the spring-steel active layer around the combustion chamber. This design allows the gasket to dynamically adapt to changing loads and cylinder pressures, helping maintain a consistent seal under heavy towing, tuning, or daily abuse. The result is improved resistance to combustion gas and coolant leaks compared to standard replacement gaskets.
Key Features
- Multi-layered steel construction for strength and durability
- Grade C thickness: 1.05 mm (0.041")
- Designed for standard bore cylinders (106.00 mm / 4.17")
- Direct-fit OEM-style replacement
- Torque-to-yield compatible
Fitment 2001–2016 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax, plus select Express/Savana and medium-duty applications using the corresponding left or right gasket.
Notes Sold individually (left or right side). Cylinder head bolts/studs are not included—replacement with new TTY bolts or high-quality studs is strongly recommended. No sealant is required or included.
Ideal for stock or moderately modified Duramax engines needing a reliable, high-quality head gasket upgrade.
MAHLE Wave-Stopper Cylinder Head Gasket (Grade C) – 2001-2016 Duramax 6.6L
The MAHLE 5459X Wave-Stopper Cylinder Head Gasket (Grade C) is a premium multi-layered steel (MLS) replacement designed for 2001-2016 GM 6.6L Duramax engines (LB7, LLY, LBZ, LMM, and LML).
It features MAHLE’s Wave-Stopper technology—concentric waves in the spring-steel active layer around the combustion chamber. This design allows the gasket to dynamically adapt to changing loads and cylinder pressures, helping maintain a consistent seal under heavy towing, tuning, or daily abuse. The result is improved resistance to combustion gas and coolant leaks compared to standard replacement gaskets.
Key Features
Multi-layered steel construction for strength and durability
Grade C thickness: 1.05 mm (0.041")
Designed for standard bore cylinders (106.00 mm / 4.17")
Direct-fit OEM-style replacement
Torque-to-yield compatible
Fitment
2001–2016 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax, plus select Express/Savana and medium-duty applications using the corresponding left or right gasket.
Notes
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MAHLE Wave-Stopper Cylinder Head Gasket (Grade C) – 2001-2016 Duramax 6.6L
The MAHLE 5459X Wave-Stopper Cylinder Head Gasket (Grade C) is a premium multi-layered steel (MLS) replacement designed for 2001-2016 GM 6.6L Duramax engines (LB7, LLY, LBZ, LMM, and LML).
It features MAHLE’s Wave-Stopper technology—concentric waves in the spring-steel active layer around the combustion chamber. This design allows the gasket to dynamically adapt to changing loads and cylinder pressures, helping maintain a consistent seal under heavy towing, tuning, or daily abuse. The result is improved resistance to combustion gas and coolant leaks compared to standard replacement gaskets.
Key Features
- Multi-layered steel construction for strength and durability
- Grade C thickness: 1.05 mm (0.041")
- Designed for standard bore cylinders (106.00 mm / 4.17")
- Direct-fit OEM-style replacement
- Torque-to-yield compatible
Fitment 2001–2016 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD with 6.6L Duramax, plus select Express/Savana and medium-duty applications using the corresponding left or right gasket.
Notes Sold individually (left or right side). Cylinder head bolts/studs are not included—replacement with new TTY bolts or high-quality studs is strongly recommended. No sealant is required or included.
Ideal for stock or moderately modified Duramax engines needing a reliable, high-quality head gasket upgrade.