Mahle - Engine Cylinder Head Gasket - 54585

Mahle Engine Cylinder Head Gasket – 54585

The Mahle 54585 is a durable, high-performance multi-layered steel (MLS) cylinder head gasket designed for the 6.6L Duramax diesel engine found in a wide range of Chevrolet, GMC, and Hummer heavy-duty vehicles. Built to OEM standards with a thickness of 1.05 mm (0.041 in) and a 4.14 in (105.40 mm) bore, this gasket ensures long-lasting sealing in demanding diesel applications.

Ideal for stock replacements or engine rebuilds, Mahle gaskets are trusted by professionals for their precision fit, high-strength materials, and superior sealing properties under high combustion pressures.

Key Features:

• Material: Multi-Layered Steel (MLS)

• Thickness: 0.041 in (1.05 mm)

• Cylinder Bore Diameter: 4.14 in (105.40 mm)

• Gasket Sealant Included: No

• Torque-To-Yield Compatible: Yes

• Item Grade: OEM Standard

• Package Quantity: 1 Gasket

• Cylinder Head Bolts Included: No

Vehicle Fitment – GM 6.6L Duramax Diesel:

Chevrolet:

• Silverado 2500 HD (2001–2016)

• Silverado 2500 HD Classic (2007)

• Silverado 3500 (2001–2006)

• Silverado 3500 Classic (2007)

• Silverado 3500 HD (2007–2016)

• Express 2500 / 3500 / 4500 (2006–2016)

• C4500 / C5500 Kodiak (2003–2007)

GMC:

• Sierra 2500 HD (2001–2016)

• Sierra 2500 HD Classic (2007)

• Sierra 3500 (2001–2006)

• Sierra 3500 Classic (2007)

• Sierra 3500 HD (2007–2016)

• Savana 2500 / 3500 / 4500 (2006–2016)

• C4500 / C5500 Topkick (2003–2007)

Hummer:

• H1 (2006)

OEM Reference Numbers – General Motors:

• 97333727

• 97378104

• 98030633

• 98045060

Note: This listing includes one (1) head gasket. Two are required per engine. Head bolts are not included and should be purchased separately.

📞 Call 1-800-228-8482 or 📧 Email parts@southcentraldiesel.com to confirm fitment or bundle with a full head gasket set and hardware.