Derale 17" High-Output, Electric Radiator Fan w/ Aluminum Shroud Assembly - PWM - 2,400 CFM

Derale Radiator Fans

22-1/4" Wide x 17-5/8" tall x 3" deep, high-output, 2-speed electric fan assembly boosts your vehicle's fuel economy and increases torque and horsepower. Variable speed PWM controller. Rustproof aluminum shroud can be painted.

Features:

• Increases fuel economy, horsepower and torque
• Improves overall performance
• Has patented, ultra-quiet, skewed-blade design
• Designed with durable, rustproof, aluminum shroud that can be painted, polished or anodized to fit your application
• Integrated pulse-width modulation (PWM) controller allows precise, variable fan speed control
  • Continuously monitors your engine's temperature
  • Runs fan only at precise speed needed for cooling, between 0-percent and 100-percent power
  • Can operate additional fans - up to 65 amps maximum capacity
• Can be mounted in various locations behind the radiator
  • Puller applications only
• Includes all necessary mounting hardware and installation instructions
• Made in USA

Specs:

• Overall dimensions: 22-1/4" wide x 17-5/8" tall x 3" deep
• Maximum cubic feet per minute:
  • 2,400 at high speed
  • 1,800 at low speed
• Power draw:
  • 23.5 amps at high speed
  • 17.4 amps at low speed
• 1-Year warranty

Whereas belt-driven fans use up power from the engine to turn, electric fans do not, thus removing any unnecessary load and increasing both fuel economy and horsepower. In addition, you do not have to worry about an electric fan's slowing down at low RPM, as many belt-driven fans do, so you are guaranteed sufficient airflow regardless of the vehicle speed.

While this assembly is intended for primary cooling and should, therefore, provide enough CFM to replace your vehicle's factory fan, you will still need to determine the CFM requirements for your engine before making your purchase. And remember, engines that have been modified or vehicles often used for towing may require additional CFM. There is no limit to the number of fans you can install, as long they all fit appropriately and are mounted on the same side of your radiator so that they do not cancel each other out.

The Powerpack's controller uses pulse-width modulation (PWM), which enables it to achieve and maintain the perfect operating speed for optimal engine cooling. The controller does this by adjusting the fan speed based on continuous, real-time engine temperature readings collected from the included sensor, which is mounted on the cool side of the radiator. Unlike conventional fan switches that have only 2 settings - on and off - the PWM controller operates at variable power levels from 0 percent to 100 percent. In some cases, for example, the engine can be kept at the desired operating temperature with fans running at between 40- and 60-percent of full operating speed. Lower operating speed means fewer cycles for the motors, which saves wear and tear and thereby potentially prolongs the life of the motors.

66822 Derale High-Output Single RAD Fan - Aluminum Shroud - PWM

Installation Details