2017-2023 Duramax Upper Engine Gasket Set (HS55522)

Chasing down every individual gasket for an L5P head job eats time you could spend turning wrenches. This MAHLE upper engine gasket set puts the top-end seals for the 2017-2023 6.6L L5P Duramax in one box, built to OE specifications. Head gaskets are not included because they are sold by thickness grade, so pair this set with two MAHLE 55524 Grade C Head Gaskets or the grade your engine calls for.

Part Number: HS55522

• Top-end reseal for the L5P 6.6L Duramax in one set
• Built to meet OE specifications
• Covers intake, valve cover, EGR, turbo and coolant sealing plus valve stem seals

• Coolant gaskets
• Fuel injector o-rings
• Intake manifold gaskets
• Thermostat housing gasket
• Throttle body gasket
• Valve cover gaskets
• EGR gaskets
• EGR cooler gaskets
• Turbocharger gaskets
• Valve stem seals

• Cylinder head gaskets are not included. MAHLE sells them separately in three grades: 55522 (Grade A, 1.20mm), 55523 (Grade B, 1.25mm) and 55524 (Grade C, 1.30mm). Two are needed.

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