Cylinder Head Gasket Set

Features:

• Fits 2017-2023 Duramax L5P engines
• Complete top-end gasket replacement kit
• Includes cylinder head gaskets
• Includes intake manifold gaskets
• Includes exhaust manifold gaskets
• Includes valve cover gaskets
• Includes upper engine sealing components
• OE-spec fit and performance
• Built for long-term sealing durability
• Ideal for upper engine rebuilds
• Supports reliable engine sealing
• Trusted Mahle gasket quality

Everything You Need To Seal Your L5P Right

Tearing into the top end of your Duramax is a big job, so having the right gasket set on hand can make the entire process smoother from start to finish. The Mahle HS55522 Top End Gasket Set is built specifically for 2017-2023 GM Silverado and Sierra HD trucks equipped with the 6.6L Duramax L5P engine, giving you the confidence that every gasket and seal is designed to fit correctly the first time. This kit includes the major sealing components needed for cylinder head repairs and upper engine service, helping eliminate the frustration of chasing down individual parts during a rebuild. Additionally, Mahle has earned a strong reputation for producing OE-quality sealing components trusted by professional engine builders and diesel technicians alike. That quality becomes especially important when your truck is relied on for towing, hauling, or long-distance driving where reliability matters most. Instead of gambling on incomplete kits or questionable fitment, this set gives you the coverage needed to properly reseal your engine with confidence. When you are already investing the time and labor into an L5P repair, using a complete Mahle gasket set simply makes sense.

Engineered To Handle Demanding Duramax Repairs

The Mahle HS55522 gasket set was designed to support comprehensive upper engine repairs on the 6.6L Duramax L5P platform found in 2017-2023 GM HD trucks. Inside the kit, you will find cylinder head gaskets along with intake manifold gaskets, exhaust manifold gaskets, valve cover gaskets, and additional upper engine seals required during top-end service. Each component is manufactured to OE specifications to help ensure proper alignment, sealing performance, and long-term durability under diesel operating conditions. What's more, using matched sealing components throughout the repair helps maintain consistent sealing pressure across critical engine surfaces. This becomes especially important in high-compression diesel engines where heat, combustion pressure, and vibration can quickly expose weak sealing materials. Mahle designs these gaskets to help maintain coolant integrity, combustion sealing, and oil control throughout the upper engine assembly. For technicians and Duramax owners looking to complete a reliable head gasket replacement or upper engine rebuild, this kit provides the complete sealing solution needed to get the job done properly.

Fitment: 2017, 2018, 2019, 2020, 2021, 2022, 2023 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax L5P

Notes:

• Confirm fitment for 2017-2023 L5P engines
• Designed for 6.6L Duramax applications only
• Includes gaskets for top-end engine service
• Review included components before installation
• Ideal for head gasket replacement jobs
• Recommended for upper engine rebuilds
• Clean sealing surfaces are required
• Check cylinder heads before reassembly
• Follow factory torque specifications carefully
• Replace any damaged related hardware