NEW Chevy 6.6 OHV Cylinder Head Pair V8 DURAMAX TURBO DIESEL Silverado 2500HD 3500HD GMC Truck 2007 - 2010 LMM / LBZ

Item Specifics:

- This listing is for a pair of Brand New Chevy 6.6 #LBZ/ LMM cylinder heads
- These heads have been casted after LMM heads with the redesigned coolant passages to optimize cooling
- Head includes the following new parts: Intake Valves (1.299"), Exhaust Valves (1.220"), valve springs, shims, retainers, keepers, and Viton valve stem seals
- Highest grade aluminum material used in manufacturing
- Thicker decks for greater strength & Improved flow design to resist cracking
- Hardened exhaust seats (stellite)
- CNC machined guides and 3 angle valve finish on all seats


NOT SURE IF YOU HAVE AN LBZ / LMM OR LLY ENGINE? LOOK FOR THESE FEATURES ON YOUR HEAD

- LBZ heads have recessed glow plug holes
- LBZ heads do not use Injector Sleeves



NO UPFRONT CORE CHARGE

CORE RETURN REQUIRED WITHIN 21 DAYS OF DELIVERY

PREPAID RETURN LABEL(S) PROVIDED

FAILURE TO RETURN CORE(S) WILL RESULT IN $500 CORE CHARGE PER CORE & COLLECTIONS FEES

**CORES MUST MATCH THE HEADS PURCHASED**

**NO CAM SEALS HAVE BEEN INSTALLED ON ANY OF OUR HEADS**



WARRANTY
ADV Cylinder Heads offers a 3 Year Unlimited Mile Warranty on all cylinder heads sold, except on High Performance heads. We ask that when installing the cylinder head make sure you are using the recommended head gasket as the manufacturer requires. You may also order the headset along with your cylinder head. Please make sure that the cooling system is in place and that the hoses, water pump, thermostat, and radiator are in GOOD working condition. Please understand that we are just selling the cylinder head and if any other part in the vehicle is old or damaged it can and will cause harm, or overheat the cylinder head. Every head sold will come with Heat Tabs which if removed will VOID your warranty. This heat tab’s center will melt if the cylinder head overheated, causing the warranty to be VOID. FAILURE TO RETURN YOUR CORE(S) WILL VOID WARRANTY. WARRANTY DOES NOT COVER ANY LABOR AND/ OR ADDITIONAL COSTS.