Mahle - Engine Cylinder Head Gasket Set- HS55522

Mahle Engine Cylinder Head Gasket Set – HS55522

The Mahle HS55522 is a high-quality, OEM-standard cylinder head gasket set designed for 2017–2021 Chevrolet Silverado HD and GMC Sierra HD trucks equipped with the 6.6L Duramax L5P diesel engine. This complete upper engine set includes all essential gaskets and seals required for a proper head gasket replacement—excluding head bolts.

Mahle’s durable materials and precision manufacturing ensure a secure seal and long-lasting performance under the high-pressure demands of modern diesel engines.

Key Features:

• Application: 6.6L Duramax L5P Diesel

• Designed to meet or exceed OEM performance standards

• Includes multi-layered steel (MLS) cylinder head gaskets

• Complete upper engine reseal kit (head bolts not included)

• Ideal for head gasket replacement or engine top-end rebuilds

Vehicle Fitment:

Chevrolet:

• Silverado 2500 HD (2017–2021)

• Silverado 3500 HD (2017–2021)

GMC:

• Sierra 2500 HD (2017–2021)

• Sierra 3500 HD (2017–2021)

Note: Cylinder head bolts are sold separately. Please confirm fitment using your vehicle’s VIN or engine code before ordering.

📦 Return Policy Notice:
Due to the sensitive nature of gasket sets, any opened packaging will void eligibility for return. Please verify fitment before opening.

📞 Call 1-800-228-8482 or 📧 Email parts@southcentraldiesel.com for compatibility questions or to build a complete engine repair package.