PPE 110100101 CAST IRON CYLINDER HEAD (ONE) FOR 01-04 GM DURAMAX 6.6L LB7

50 States Emissions Legal (E.O. D-701-38) The 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.

PPE's new LB7 Cast Iron Cylinder Head is the ultimate upgrade to your Duramax engine and eliminates any head gasket or cracking concerns. Cast from high-quality alloyed gray iron, the PPE Cylinder Head offers elevated fatigue strength, and heat and creep resistance, which prolongs the cylinder head's lifespan significantly.

PPE Cylinder Heads also share the same heat expansion rate as the stock cast-iron cylinder block no more blown head gaskets. PPE LB7 Cylinder Heads also feature cast-in fuel injector cups and solve the OEM injector cup leaking issue.

Each head comes complete with upgraded valve train components. All valves are made of superior materials and fully nitridated. The tapered valve springs' higher spring rate and lighter retainers/locators enable faster response during higher RPMs and eliminate valve float. Powder metal valve seats provide superior wear and heat resistance. The denser and stiffer material properties from the cast-iron construction also significantly reduce engine clatter.

Whether you have a damaged aluminum cylinder head or a desire FOR better reliability and longevity on your Duramax engine, the PPE Cast Iron Cylinder Head is undoubtedly the best choice.

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Experience unparalleled performance and reliability with the PPE 110100101 Cast Iron Cylinder Head, designed exclusively FOR the 2001-2004 GM Duramax 6.6L LB7 engine. This innovative replacement part is engineered to address the common vulnerabilities of OEM cast-aluminum cylinder heads, which can over time succumb to issues such as head gasket scrubbing and warping.

Crafted from premium alloyed gray iron, the PPE cylinder head significantly enhances fatigue strength and heat resistance, ensuring longevity even in high-performance scenarios where conventional materials may falter. The compatibility with the factory cast-iron engine block means that heat expansion rates are aligned, effectively eliminating concerns about blown head gaskets.

What sets this cylinder head apart is its comprehensive design, featuring integrated fuel injector cups that resolve the prevalent leaking issues faced with OEM parts. Each head is equipped with state-of-the-art valve train components, including fully nitridated valves that stand up to intense performance demands. The tapered valve springs, designed FOR a higher spring rate, combined with lightweight retainers and locators, optimize responsiveness during increased RPMs, thus preventing any occurrences of valve float.

Additionally, the powder metal valve seats enhance heat and wear resistance, promising durability even under strenuous conditions. With its denser and robust construction, the PPE Cast Iron Cylinder Head not only elevates performance but also minimizes engine clatter, providing a smoother operation.

FOR anyone facing challenges with aluminum cylinder heads, or seeking enhanced reliability and longevity FOR their Duramax engine, the PPE Cast Iron Cylinder Head stands out as the ultimate upgrade choice, ensuring unparalleled engine performance FOR years to come. Embrace the power of innovation and take your Duramax to the next level.