Temperature-Controlled Viscous Fan Clutch for Massey Ferguson 6600/7600 Series Tractors SKU: QT64971

When your fan is locked up and roaring constantly, or slipping and letting the engine overheat, this precision-engineered replacement restores the automatic cooling control these advanced tractors were designed to have. Inside this viscous clutch is a precisely calibrated system using temperature-sensitive silicone fluid that remains thin when your engine is cold, allowing the fan to slip and reducing the power draw to almost nothing, then thickens progressively as operating temperature rises to provide exactly the cooling needed.

Why This Smart Cooling Matters

• Saves 5-10 horsepower during normal operation compared to a locked fan, while ensuring your engine never overheats
• Hermetically sealed construction maintains precise calibration for the life of the unit, with no adjustment or service required
• Smooth, progressive engagement extends belt and component life while reducing fuel consumption
• Dramatically improves operator comfort by reducing cab noise levels during normal operation

Replaces These Part Numbers

• Massey Ferguson 4353860M1
• Massey Ferguson 4353861M92
• Massey Ferguson 4377131M1

Handle carefully during installation—never turn the clutch upside down or store it on its side, as this can cause the silicone fluid to migrate, and inspect your fan blades for damage since a bent fan will destroy a new clutch quickly. S&H Parts has been helping operators find the right cooling solutions since 1969.