Lmm clutch fan. OEM GM fan clutch for 2006-2010 Chevy/GMC 6. Designed to engage more consistently and at a lower temperature than the OE unit to prevent overheating. 6l Duramax LLY-LMM engines Approximately 25° lower engagement temperature Engages at approximately 200°F engine coolant temperature Helps increase AC performance due to lower set point Fits: 2001-2010 6. This will mount directly in the center of the engine, and comes with the pulley already installed. This unit will work on the 2006-2010 LBZ & LMM Duramax diesel. This is a genuine OEM GM fan clutch bearing and pulley assembly. Fits 2006-2010 Duramax LBZ, LMM engines in pickup trucks only NOT Kodiaks. ACDelco GM Original Equipment Engine Cooling Fan Clutches control the speed of the radiator fan based on the temperature of the air after it passes through the radiator fins. 6L LBZ/LMM Duramax trucks. Shop at DmaxStore for your Duramax needs. jruhey dgxxjf gpax luii uuru vdedwk saqjyj mphk qpqmrnfk salg