Optimize airflow and fuel delivery for your 2004.5–2005 LLY Duramax with upgraded intercooler piping, turbo kits, and performance injectors. This section focuses on improving turbo spool and reducing EGTs while maintaining compatibility with stock turbochargers and factory engine management. Includes LLY-specific head studs and fuel system parts for daily driving or towing builds.
2004.5-2010 GM 6.6L DURAMAX
The GM 12642623 Fuel Filter Head Assembly for your 04.5-10 GM 6.6L Duramax is an OE factory replacement for your GM Duramax. Over time, the stock fuel filter head can...
2001-2010 GM 6.6L DURAMAX
The GM 94011604 Upper Radiator Pipe Seal for your 2001-2010 GM 6.6L Duramax is a factory replacement for the OE seal. This seal goes on the coolant outlet pipe that...
2001-2015 GM 6.6L DURAMAX
The GM 98002804 Exhaust Manifold Gasket is a factory replacement for your 2001-2015 GM 6.6L Duramax. Gaskets sold individually.Â
2001-2015 GM 6.6L DURAMAX
The GM 12637647 Updated Driver Side Exhaust Manifold for your 2001-2010 GM 6.6L Duramax features a "full bore" unlike the factory exhaust manifold that is "kinked or...
2004.5-2005 GM 6.6L DURAMAX LLY
The GMÂ 97326305Â Glow Plug is a direct replacement for your 2004.5-2005 GM 6.6L Duramax LLY. Replacing failed glow plugs can eliminate check engine lights and hard...
2001-2015 GM 6.6L DURAMAX
The GM 97188685 Exhaust Manifold To Up-Pipe Gasket is a direct replacement for your 2001-2015 GM 6.6L Duramax. This gasket is commonly replaced when upgrading exhaust...
2001-2007 GM 6.6L DURAMAX (ALSO 2007.5-2010 WITH LEFT HAND DIPSTICK TUBE)
The GM 15794381 Transmission Dipstick is a direct replacement for the 2001-2007 GM 6.6L Duramax. This part is also commonly...
2001-2010 GM 6.6L DURAMAX
The GM 11561233 Torsion Bar Nut is a direct replacement for the factory hardware in your 2001-2010 GM 6.6L Duramax. From being adjusted over time, the factory Torsion Bar...
2001-2016 GM 6.6L DURAMAX (FRONT)
The GM 97241129 Front Thermostat is a factory replacement for your 2001-2016 GM 6.6L Duramax. This Thermostat features the same OE activation temp and is a drop-in...
2001-2016 GM 6.6L DURAMAX (REAR)
The GM 97241130 Rear Thermostat is a factory replacement for your 2001-2016 GM 6.6L Duramax. This Thermostat features the same OE activation temp and is a drop-in...
2001-2015 GM 6.6L DURAMAX
The GM 11610681 Cylinder Head Bolt is an OE replacement for the factory installed head bolts in your 2001-2015 GM 6.6L Duramax.Â
The factory bolts are torque-to-yield and...