Pulley Crankshaft HTD 25 Tooth 1in Wide

The Jones Racing Products Pulley Crankshaft HTD 25 Tooth 1in Wide (CS-6102-B-25) is a precision serpentine belt drive component engineered for high-performance marine engine applications. This HTD profile pulley delivers synchronized power transfer from the crankshaft to alternators, water pumps, and accessory systems on modern inboard and outboard powerplants where reliable, maintenance-minimal belt drive performance is essential.

Built from aluminum and finished in durable black anodizing, this crankshaft pulley resists corrosion from saltwater spray and humidity—critical for offshore fishing vessels and coastal boaters operating in harsh marine environments. The HTD 25-tooth profile ensures predictable belt engagement and eliminates slip under load, maintaining consistent alternator output and accessory drive speed. At 1 inch wide, the pulley accommodates standard serpentine belts found on most contemporary marine powerplants. The 1-inch mandrel and 1/8-inch keyway provide universal fit compatibility across a broad range of engine platforms, while the lightweight aluminum construction (0.34 lbs) minimizes rotating mass and reduces parasitic drag on the crankshaft.

Serious anglers and recreational boaters rely on proven belt drive systems to maintain electrical charging and cooling during extended offshore runs. Weekend fishermen benefit from the longevity and reduced maintenance that HTD synchronous drives deliver compared to older V-belt designs. Whether you're rebuilding a powerhead, upgrading an aging accessory drive, or maintaining peak electrical output during multi-day tournaments, this Jones Racing crankshaft pulley provides the engineering-grade reliability expected by marine mechanics and performance engine builders.