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Diamond Advantage Upper Engine Gasket kit including 18mm Head Gaskets. 


  • High-quality parts that meet or exceed OE specs
  • Backed by Navistar
  • No-risk and hassle-free core return
  • Comprehensive two-year unlimited mileage warranty on parts with labor coverage for professional installers

Check fitment before ordering. 20mm dowels were used on trucks with a build date from Jan 11, 2006 and onward.

06-07 6.0 Upper Engine Reseal Kit 20mm

SKU: DA2251600
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