PPE Upgraded Cast Iron Cylinder Heads For 11-16 Chevrolet/GMC 6.6L LML Duramax mufflers and an oil feed line

and an oil feed line gasket

Compatible with GM Duramax engines and OEM components

45 degree turbo oil inlet fitting

(4) Mounting Bolts

Factory-fit

PPE Upgraded Cast Iron Cylinder Heads For 11-16 Chevrolet/GMC 6.6L LML Duramax mufflers and an oil feed lineThe OEM Duramax cast aluminum cylinder heads fall short over time the different heat expansion rates between 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 Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine