Temperature-Controlled Viscous Fan Clutch for New Holland T4020-T4050 and T4.75V-T4.105U Series Trac SKU: QT44215

When this clutch fails, you'll either have a fan that runs constantly (robbing power and fuel) or one that won't engage when needed (leading to overheating). This replacement viscous clutch restores intelligent cooling control, automatically engaging the fan only when needed while freeing up valuable horsepower during light work or cold weather operation.

Why Smart Cooling Matters

• 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
• This viscous clutch uses temperature-sensitive silicone fluid to control engagement. As temperatures rise, the fluid's properties change, creating the coupling force that spins the fan faster
• The precision-machined housing maintains exact clearances for proper operation throughout the clutch's life
• Reduces noise, and frees up horsepower when you need it most

Get the precise cooling control your T4000 series tractor was engineered to have. If you're unsure about fitment, give us a call—we've been matching the right cooling components to tractors since 1969.