HTD Drive Belt 25.512in

The HTD Drive Belt 25.512in from Jones Racing Products is engineered for marine and boating applications where reliable power transmission between engine components is critical. Whether you're running a high-performance boat engine, auxiliary drive system, or aftermarket cooling/charging setup, this precision-made belt delivers consistent torque transfer without slippage. HTD (High Torque Drive) belts are the standard choice for serious boaters and engine builders who demand durability under demanding water conditions.

This HTD Drive Belt 25.512in features an 8mm pitch tooth profile with a 20mm width, a specification that defines its load capacity and pulley compatibility. The tooth geometry ensures positive engagement with matching HTD pulleys, eliminating the slippage associated with V-belts and delivering superior efficiency in high-RPM marine engines. At 0.2 lbs, the belt's light weight minimizes parasitic drag on your engine while maintaining the structural integrity needed for sustained operation. Jones Racing Products constructs this belt from premium reinforced material designed to withstand thermal cycling, salt spray, and the vibration inherent to marine powerplants.

Boaters upgrading alternator drives, water pump systems, or custom engine packages will find this HTD Drive Belt 25.512in essential for matching existing or new pulley combinations. The 25.51-inch length suits mid-sized engine configurations common in performance and restoration builds. Before installation, verify your pulleys are HTD-compatible with 8mm pitch teeth and confirm the center-distance measurement matches this belt's nominal length. Proper tension adjustment—typically 0.25–0.50 inches of deflection at mid-span—ensures maximum belt life and noise-free operation on the water.