Gates 38702 FleetRunner Heavy-Duty Automatic Belt Drive Tensioner

The Gates 38702 FleetRunner Heavy-Duty Automatic Belt Drive Tensioner is engineered to exceed demanding OEM requirements for commercial trucks and heavy-duty applications. This professional-grade tensioner delivers superior performance and reliability for demanding accessory drive systems.

Advanced Engineering Features:

• Chrome-silicone round torsion spring provides consistent tension and resists flex-fatigue better than flat-spring designs
• Double-row bearings carry more load and last up to 3 times longer than two individual bearings
• Patented damping mechanism provides maximum stability, reducing vibration and extending belt life
• Patented labyrinth seal prevents contamination of internal parts for maximum durability
• Steel pulley with dust shields protects internal bearings from contamination
• Smooth contact surface design for V-ribbed serpentine belts

Technical Specifications:

• Bearing bore inside diameter: 1.18 inches (30mm)
• Outside diameter: 75mm
• Pulley width: 32.5mm
• Belt type: V-ribbed serpentine
• Material: Premium steel construction

Built to OEM tolerances and specifications, the Gates 38702 ensures proper fit, form, and function. In laboratory tests under extreme peak-to-peak vibration and contamination conditions, FleetRunner tensioners lasted up to 3 times longer than competitive aftermarket tensioners. Commonly used in Freightliner, International, Kenworth, and other heavy-duty truck applications with Cummins ISB diesel engines.

Cross-Reference Part Numbers: Replaces Cummins 4929688, Cummins 5270678, Dayco 89930, Litens 910588A, Goodyear 49607, Tendeco 910588, ACDelco 38702, Dorman 419-375, and other equivalent part numbers.