SKU: JRPCS-3102-C-B-5
MPN: CS-3102-C-B-5
The Jones Racing Products Pulley Crankshaft V-Belt 5-inch 1-inch ID is a precision aluminum pulley engineered for high-performance marine engine applications. This 5-inch diameter crankshaft pulley features a single V-belt groove and 1-inch mandrel bore, designed to deliver reliable belt drive efficiency in demanding saltwater and freshwater boating environments. The black anodized finish resists corrosion from prolonged exposure to marine conditions, making it an essential component for offshore fishing vessels, center consoles, and performance boats that demand dependable accessory drive systems.
The 5-inch pulley diameter and 1-inch ID mandrel accommodate standard V-belt sizing while the 1/8-inch keyway ensures positive engagement with the crankshaft, preventing belt slippage under load. Aluminum construction keeps rotational mass minimal, reducing strain on the crankshaft and alternator bearings during engine acceleration and sustained high-RPM operation. The black anodized surface provides superior corrosion resistance compared to bare aluminum, critical for vessels operating in salt spray environments where unprotected metal deteriorates rapidly. This universal design accepts compatible aftermarket V-belts and works across multiple marine engine platforms requiring crankshaft pulley replacement or upgrade.
This crankshaft pulley suits serious anglers and boating enthusiasts maintaining or rebuilding marine engines, from weekend fishing trips to extended offshore operations. Replacement pulleys are necessary when original equipment shows wear, belt slip, or when upgrading to higher-output alternator systems. The lightweight aluminum construction appeals to performance-conscious boaters seeking to optimize engine efficiency and reduce parasitic load during critical moments on the water. Whether restoring a classic fishing vessel or maintaining modern marine propulsion, this Jones Racing Products pulley delivers the precision fitment and corrosion protection salt-water operations require.
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