Heavy-Duty Viscous Fan Clutch for Massey Ferguson 6480-6499 and 7480-7499 High HP Series Tractors SKU: QT63311

When your high-horsepower Massey Ferguson starts running hot or you notice the fan roaring constantly even in cool weather, it's time to replace that viscous fan clutch. This temperature-sensitive component is the brain of your cooling system, automatically engaging the fan when needed and freeing up valuable horsepower when it's not. A locked fan constantly consumes 15-20 horsepower, even during cold morning starts or light work. This viscous clutch disengages when cooling isn't needed, returning that power to your PTO or drawbar.

Why This Clutch Matters

• Contains specially formulated silicone fluid that responds predictably to temperature changes throughout its service life. As coolant temperature rises, the fluid's viscosity increases, progressively engaging the fan to provide exactly the cooling needed.
• Robust sealed construction prevents contamination that would alter the clutch's carefully calibrated response, ensuring years of maintenance-free operation.
• Progressive engagement prevents shock loads on belts and bearings
• This intelligent operation can free up 10-15 horsepower during normal operation compared to a direct-drive fan.

This viscous fan clutch fits Massey Ferguson models 6480, 6485, 6490, 6495, 6497, 6499 in the 6400 series and 7480, 7485, 7490, 7495, 7497, 7499 in the 7400 series. When installing, never lay the clutch on its side or upside down - this can cause the silicone fluid to migrate and affect operation. Check fan blade condition and balance - a damaged fan will quickly destroy a new clutch. S&H Parts has been matching the right cooling parts to demanding farm applications since 1969.