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Thumbnail Filmstrip of L5P Duramax Head Set (Without Head Gaskets) Mahle HS55522 Images
Mahle HS55522 L5P Duramax Head Set (Without Head Gaskets) is a premium top-end gasket kit designed specifically for the 2017–2023 GM 6.6L Duramax L5P engine.
This comprehensive upper engine gasket set from Mahle (a leading OE supplier) provides all the necessary seals and gaskets required for cylinder head service, head gasket replacement, or a complete top-end rebuild—excluding the head gaskets themselves. It saves significant time and hassle by consolidating dozens of individual components into one high-quality kit.
Key Features & Benefits
- OE-quality construction — Manufactured to strict OEM specifications using premium materials for reliable, long-lasting seals under high boost and extreme diesel operating conditions.
- Time-saving convenience — Includes virtually every gasket and seal needed for upper engine reassembly in one box.
- Direct-fit design — Engineered specifically for the L5P Duramax for proper fitment and sealing.
- Includes valve stem seals — Critical for preventing oil consumption and maintaining compression.
- Flexible solution — Head gaskets are sold separately so you can choose the correct grade/thickness (A, B, or C) based on your piston protrusion measurements.
What's Included
- Valve stem seals
- Valve cover gaskets and seals (upper and lower)
- Intake manifold gaskets
- Exhaust manifold gaskets
- Up-pipe gaskets
- Turbo oil feed and drain gaskets
- EGR gaskets and EGR cooler gaskets
- Throttle body / grid heater gaskets
- Coolant crossover and thermostat housing gaskets/seals
- Y-bridge / intake seals
- Fuel injector O-rings
- Additional coolant, emission, and related upper engine seals
Note: Cylinder head gaskets are not included (purchase separately — Mahle 55522 Grade A, 55523 Grade B, or 55524 Grade C). Head bolts/studs are also not included (many builders upgrade to performance studs for added clamping force).
Vehicle Fitment
2017–2023 Chevrolet Silverado 2500HD / 3500HD and GMC Sierra 2500HD / 3500HD with the 6.6L Duramax L5P engine.
This Mahle HS55522 Head Set is the ideal choice for professional diesel technicians and serious DIYers performing head gasket work or top-end service on the L5P. Pair it with the correct grade Mahle head gaskets for a complete, leak-free repair that restores factory sealing integrity.
Mahle HS55522 L5P Duramax Head Set (Without Head Gaskets) is a premium top-end gasket kit designed specifically for the 2017–2023 GM 6.6L Duramax L5P engine.
This comprehensive upper engine gasket set from Mahle (a leading OE supplier) provides all the necessary seals and gaskets required for cylinder head service, head gasket replacement, or a complete top-end rebuild—excluding the head gaskets themselves. It saves significant time and hassle by consolidating dozens of individual components into one high-quality kit.
Key Features & Benefits
OE-quality construction — Manufactured to strict OEM specifications using premium materials for reliable, long-lasting seals under high boost and extreme diesel operating conditions.
Time-saving convenience — Includes virtually every gasket and seal needed for upper engine reassembly in one box.
Direct-fit design — Engineered specifically for the L5P Duramax for proper fitment and sealing.
Includes valve stem seals — Critical for preventing oil consumption and maintaining compression.
Flexible solution — Head gaskets are sold separately so you can choose the correct [...]
Mahle HS55522 L5P Duramax Head Set (Without Head Gaskets) is a premium top-end gasket kit designed specifically for the 2017–2023 GM 6.6L Duramax L5P engine.
This comprehensive upper engine gasket set from Mahle (a leading OE supplier) provides all the necessary seals and gaskets required for cylinder head service, head gasket replacement, or a complete top-end rebuild—excluding the head gaskets themselves. It saves significant time and hassle by consolidating dozens of individual components into one high-quality kit.
Key Features & Benefits
- OE-quality construction — Manufactured to strict OEM specifications using premium materials for reliable, long-lasting seals under high boost and extreme diesel operating conditions.
- Time-saving convenience — Includes virtually every gasket and seal needed for upper engine reassembly in one box.
- Direct-fit design — Engineered specifically for the L5P Duramax for proper fitment and sealing.
- Includes valve stem seals — Critical for preventing oil consumption and maintaining compression.
- Flexible solution — Head gaskets are sold separately so you can choose the correct grade/thickness (A, B, or C) based on your piston protrusion measurements.
What's Included
- Valve stem seals
- Valve cover gaskets and seals (upper and lower)
- Intake manifold gaskets
- Exhaust manifold gaskets
- Up-pipe gaskets
- Turbo oil feed and drain gaskets
- EGR gaskets and EGR cooler gaskets
- Throttle body / grid heater gaskets
- Coolant crossover and thermostat housing gaskets/seals
- Y-bridge / intake seals
- Fuel injector O-rings
- Additional coolant, emission, and related upper engine seals
Note: Cylinder head gaskets are not included (purchase separately — Mahle 55522 Grade A, 55523 Grade B, or 55524 Grade C). Head bolts/studs are also not included (many builders upgrade to performance studs for added clamping force).
Vehicle Fitment
2017–2023 Chevrolet Silverado 2500HD / 3500HD and GMC Sierra 2500HD / 3500HD with the 6.6L Duramax L5P engine.
This Mahle HS55522 Head Set is the ideal choice for professional diesel technicians and serious DIYers performing head gasket work or top-end service on the L5P. Pair it with the correct grade Mahle head gaskets for a complete, leak-free repair that restores factory sealing integrity.