8-Rib Serpentine Fan Belt for John Deere 8120-8520 Series Tractors SKU: QT58159

When your serpentine belt fails, engine overheating follows quickly—especially during peak season when you're pushing horsepower limits. This precision-engineered 8-rib serpentine belt restores reliable power to your cooling fan, alternator, and hydraulic systems, preventing costly downtime and potential engine damage.

Why This Belt Delivers

• 8-rib poly-V design distributes loads evenly while maximizing grip on all driven accessories
• Heat-resistant EPDM compound withstands extreme engine compartment temperatures
• Reinforced internal cords maintain proper tension and resist stretching under heavy loads
• Oil-resistant construction prevents deterioration from hydraulic fluid exposure

Getting the belt routing correct is critical on these high-horsepower tractors. If you need fitment confirmation for your specific model year and configuration, our parts specialists have been helping customers since 1969.