Industrial Injection 2004.5-2005 LLY Duramax NEW Premium Stock Plus Cylinder Heads (RH & LH Set)2004. 5 2005 LLY Duramax Premium Stock Plus New Cylinder Heads (RH & LH Set) Restore factory performance and reliability to your 2004. 52005 LLY Duramax 6. 6L with these brand new Premium Stock Plus cylinder heads. Designed as a direct replacement for factory heads, these new castings eliminate the uncertainty associated with remanufactured cores while delivering the durability, airflow, and performance required for stock and mild performance

7 PowerStroke Cab & Chassis

It is the largest sizing that we make but we can make more or less fuel delivery within this largest group

9  exhaust manifolds ONLY

We will credit the core charge back when we receive the old upper oil pan

the Premium Stock Plus Cylinder Head delivers OEM-style fitment with enhanced durability where it matters most

Whether you’re building a daily-driven work truck

⚠️ Notes:

7 Cummins build on a foundation engineered for durability

9 Cummins Stage 2 Builder Box (2003-2007)

05mm Grade C Left 2001-2016 6

increased valve spring pressure

Compressor: