Description
GM LMM 6.6L – Head Gasket Set 2007-2010
These are our brand gaskets that we have been developing for years to provide a quality product without relying on other manufacturers.  We have eliminated the middleman and deal directly with the manufacturer, where we can modify, enhance, and produce the quality the end user desires. We offer brands such as MAHLE, Victor Reinz, and other manufacturers to fit the budget or demand of the customer. If you have any questions, please call someone on our team at 1-855-474-9400; we will be more than happy to assist you.
Special Notes about the Product(s):
- These gaskets are designed to fit all LMM Engines. Identifying the correct engine is crucial in selecting the correct gasket set. All LMM engines have injectors that go THROUGH the valve cover. Two engine models that are similar to these are the LLY and LBZ. The main difference between the head gasket sets on these engines is the EGR Coolers. If the EGR Coolers are RECTANGULAR, then the engine is an LMM and this is the correct gasket set. If the EGR Coolers are CYLINDRICAL, then the engine is an LLY or LBZ, and gaskets are located here. If the injectors are UNDER the valve cover, the engine is an LB7, and the gaskets are located here. If the engine has TWO EGR Coolers, then the engine is an LML, and these are the gaskets.
- This set contains all gaskets, seals, and o-rings to seal the upper part of the engine.
- 1 set Per Engine
- Includes Grade “C” (1.05mm) Head Gaskets (Left and Right) and below components and more:
- 1 – Cylinder Head LH Gasket (1.05 mm)
- 1 – Cylinder Head RH Gasket (1.05 mm)
- 2 – Upper Valve Cover Gasket
- 2 – Lower Valve Cover Gasket
- 2 – Center Intake Manifold Gasket
- 2 – Intake Manifold Seal
- 1 – Upper Intake Manifold Gasket
- 2 – Intake Manifold Gasket
- 1 – Throttle Body Mounting Gasket
- 2 – Exhaust Manifold Gasket
- 32 – Valve Stem Oil Seal
- 2 – Coolant Thermostat Housing Gasket
- 2 – Coolant Thermostat Seal
- 1 – HVAC Heater Outlet Pipe Seal
- 1 – Coolant Outlet Pipe Seal
- 1 – Turbocharger Coolant Line Gasket
- 2 – Turbocharger Inlet Pipe Gasket
- 2 – Turbocharger Inlet Pipe Gasket
- 1 – EGR Valve Cooler Gasket
- 1 – Lower Turbo Oil Return Pipe Gasket
- 1 – Upper Turbo Oil Return Pipe Gasket
- 2 – Turbocharger Oil Feed Pipe Gasket
- 1 – EGR Tube To EGR Valve Gasket
- 1 – EGR Valve Gasket
- 1 – EGR Valve Gasket
This product listing fits the following application(s):
- GM LMM 6.6L Duramax –Â 2007-2010 VIN “6” 402 CID
Interchange Part Number(s):
- GM 98434773, MAHLE HS54580B, Victor 02-10484-01, Fel-Pro HSU26269-2
DK Engine Parts offers a variety of engine parts and kits for most Powerstroke applications and engine models. If you do not see what you are looking for, please do not hesitate to call us at 1-855-474-9400. Thank you for stopping by; we look forward to speaking with you soon!

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