PPE Upgraded Cast Iron Ported Cylinder Head Set For 01-04 GMC Chevy 6.6L Duramax Fuse Box Cover 5" per axle channel frame

5" per axle channel frame and 12-bolt rear

Intake Outlet Diameter ID: (3

Thick-gauge stainless steel bracket construction

Durable T304 stainless steel resists corrosion and wear

1979-1980 PLYMOUTH CHAMP

PPE Upgraded Cast Iron Ported Cylinder Head Set For 01-04 GMC Chevy 6.6L Duramax Fuse Box Cover 5" per axle channel frameThe OEM Duramax cast aluminum cylinder heads fall short over time the differing heat expansion rates between the cast iron engine block and cast aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder heads are also prone to warping, melting, and or cracking in high performance applications where excessive heat is introduced. PPEs new ported LB7 Cast Iron Cylinder Head is the ultimate upgrade for