Flex-A-Lite Full Size Electric Fan (LB7-LLY)

Part# 104703


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Flex-A-Lite Full Size Diesel Truck Electric Fan

Fits 2001-2005 Chevy/GMC 2500/3500 HD

Part# 104703

This is a direct-fit, bolt-on Flex-a-lite® S-Blade dual electric-fan system for  ’01-’05 Chevrolet and GMC trucks with diesel engines. Dyno tests show a gain of up to 27 horsepower and 34 lbs-ft. of torque while also improving fuel economy by replacing your stock clutch fan assembly with this dual electric fan system. This system features two 15-inch 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!


  • Direct-fit, bolt-on design

  • Up to 6,000 cfm of airflow

  • Up to 27 horsepower and 34 lbs-ft. of torque

  • Quicker engine warm up

  • Approximately 4-hour installation time

  • Variable Speed Controller with A/C relay