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Fits 2001-2005 Duramax LB7, LLY engines in pickup trucks. Also fits 2006-2009 Express vans with Duramax engine and without electronic activation. Designed to engage more consistently and at a lower temperature than the OE unit to prevent overheating.

"Be sure to clean the air side of the cooling stack. The radiator will often load up with debris behind the intercooler. The best way to clean this is to remove it so that you can do a thorough visual inspection." - JK

Fan clutches are covered by a one year manufacturer warranty. Clutches submitted for warranty will be tested and repaired or replaced by the manufacturer.

Fits 2006-2010 Duramax LBZ, LMM engines in pickup trucks. Designed to engage more consistently and at a lower temperature than the OE unit to prevent overheating.

"Be sure to clean the air side of the cooling stack. The radiator will often load up with debris behind the intercooler. The best way to clean this is to remove it so that you can do a thorough visual inspection." - JK

Fan clutches are covered by a one year manufacturer warranty. Clutches submitted for warranty will be tested and repaired or replaced by the manufacturer.