30.315in Long 6-Groove Serpentine Belt

The 30.315in Long 6-Groove Serpentine Belt by Jones Racing Products is engineered for high-performance marine and boating applications where reliable accessory drive power is non-negotiable. Serpentine belts are the backbone of any engine's cooling and charging system—responsible for driving the alternator, water pump, and other critical auxiliaries simultaneously. Whether you're running a tournament fishing boat, cruising vessel, or offshore rig, a worn or failing serpentine belt is an invitation to catastrophic overheating and electrical failure on the water.

This six-groove design maximizes contact surface area with pulleys, distributing load evenly and reducing slippage under sustained high-RPM operation—exactly what marine engines demand during extended runs. The 30.315-inch length is precisely engineered to match OEM specifications, ensuring proper tensioning and alignment without modification or adapter hardware. Jones Racing Products uses advanced elastomer compounds formulated to resist saltwater corrosion, UV degradation, and extreme temperature swings common to marine engine bays. The serpentine configuration eliminates the need for multiple V-belts, streamlining installation while improving space efficiency in tight engine compartments.

Boaters and marine technicians trust this belt for retrofit and replacement service on performance and stock applications alike. If your engine is displaying dim running lights, weak water flow, or battery drain during idle, a degraded serpentine belt is often the culprit. Installation requires no special tools—simply route the belt following the engine bay diagram, set tension using a belt gauge or deflection method, and secure the tensioner bolt. Verify compatibility with your specific engine model and pulley configuration before ordering to ensure proper fit and longevity.