ACM Viscous Fan Drives offer the latest in engineering innovations, including fully modulating, cost-effective fan drives that control fan speed in direct proportion to engine cooling needs. ACM Viscous Fan Drives are the economical choice for efficiency, performance and quiet operation.

Product Features:

• Fan operates only when required and at appropriate speed - Allowing for improved efficiency and possible fuel and horsepower savings of up to 6-10% over fixed fans.
• Self-contained unit - No maintenance needed, nothing to service of maintain.
• Improved temperature control and smooth, soft fan engagement - Allowing for extended engine, belt and accessory component life.
• Bimetallic sensor - Senses heat exchanger air temperature for accurate fan engagement
• No external controls required - Simplicity of design for improved reliability