Shop Blessed Performance for the Flex-A-Lite Direct-Fit Dual Electric Cooling Fans for your 2001-2005 GM 6.6L LB7/LLY Duramax diesel. By replacing your stock clutch fan assembly with this dual electric fan system, you can increase your fuel economy by up to 6% and recover up to 27 HP! These cooling fans feature two 15-inch S-Blade electric fans and a Flex-a-lite Variable Speed Controller that varies the fan speed from 60-100 percent, depending on radiator temperature. These powerful fans move up to 6,000 CFM of airflow!Also see the related products below for the Flex-a-lite 31143 Illuminated 3-Way Switch (sold separately) that gives you the option to override the fan controller by turn the fans off, or on at 100%.








