Viscous Fan Clutch for John Deere 4050/4055/4255/8000 Series Tractors SKU: QT57888

A failed viscous fan clutch robs you of power when it locks up constantly or risks engine damage when it won't engage for cooling. This temperature-controlled clutch restores intelligent cooling management to your John Deere, automatically adjusting fan speed based on actual operating conditions to save fuel while protecting your engine.

Why Genuine Matters

• Precision-calibrated silicone fluid responds accurately to temperature changes
• Sealed construction prevents contamination that would alter clutch operation
• Heavy-duty bearings handle constant speed variations and high rotational forces
• Saves 10-15 horsepower during normal operation compared to a locked fan

When your cooling fan runs constantly or won't engage when needed, this viscous clutch brings back the smart temperature management these high-horsepower tractors were designed to have. Call S&H Parts if you need help confirming the right fit for your specific model year.