Viscous Fan Clutch for John Deere R Series and M Series Tractors SKU: QT58737

When your viscous fan clutch fails, you either get a fan roaring constantly at full speed—wasting fuel and robbing power—or one that won't engage when temperatures climb, risking costly engine damage. This temperature-controlled viscous clutch restores smart cooling to your John Deere, engaging precisely when heat builds up and freewheeling to save fuel when full cooling isn't needed.

Why Genuine Matters

• Temperature-sensitive silicone fluid provides precise engagement based on actual cooling needs
• Sealed construction prevents fluid loss that renders clutches inoperative
• Heavy-duty bearings handle constant speed variations and high rotational forces
• Precision-machined housing maintains exact clearances throughout service life

A properly functioning viscous clutch can save 5-10 horsepower during normal operation while ensuring your engine never overheats. S&H Parts has the cooling system expertise to help you get the right fit for your application.