Mahle HS54450 Head Gasket Set | 6.0L Power Stroke | 18mm Dowel | 2003-2006

Mahle head gasket set for Ford 6.0L Power Stroke and International VT365 engines built before January 16, 2006, part number HS54450. This is the 18 mm dowel version. Engines built after that date use 20 mm dowels and require a different set.

Key Features:

• 18 mm head gaskets and dowel pins
• Complete upper engine set — head gaskets, valve cover, intake and exhaust manifold gaskets
• Includes the full EGR cooler and EGR valve gasket group
• Includes oil cooler mounting gaskets and O-rings
• Includes injector tube seals, turbo oil drain gaskets, and copper washers
• Includes high pressure oil pump O-rings and fuel pressure regulator seals

Specifications:

• Part number: HS54450
• Brand: Mahle
• Condition: New
• Component type: Head gasket set
• Dowel size: 18 mm
• Engine: Ford 6.0L Power Stroke and International VT365
• Build date: Prior to January 16, 2006
• Weight: 5.6 lb
• Sold as: One set

Compatibility / Fitment:

Fits Ford 6.0L Power Stroke and International VT365 engines built before January 16, 2006.

Hard fitment gate — dowel size and engine serial number:

Ford changed from 18 mm to 20 mm head dowels on 1/16/2006. This set is for 18 mm dowel engines.

Covered engine serial ranges: 137,745 to 299,092, and 6,155,637 to 6,723,721.

Engines outside those ranges, or built after 1/16/2006, use the 20 mm set.

Confirm your engine serial number before ordering. Build date alone is not sufficient on trucks near the changeover.

Head studs or bolts are not included and are sold separately. Most shops replace the factory torque-to-yield head bolts with studs during this repair.

Conclusion:

Mahle HS54450 is the 18 mm dowel head gasket set for pre-January 2006 Ford 6.0L Power Stroke and International VT365 engines, covering the head gaskets plus the EGR, oil cooler, injector, and manifold sealing groups. Verify your engine serial number against the ranges above before ordering — the 18 mm and 20 mm sets are not interchangeable.