Pulley HTD 5M 56-tooth 5/8-inch Bore

The Pulley HTD 5M 56-tooth 5/8-inch Bore from AEROMOTIVE is a precision-engineered serpentine pulley system component designed for high-performance fuel pump and accessory drive applications. This HTD (High Torque Drive) pulley is ideal for engine builders, drag racers, and street performance enthusiasts who require reliable belt-driven fuel system management.

This pulley integrates into Aeromotive's modular pump drive ecosystem to ensure consistent, load-balanced power delivery to critical engine auxiliaries. HTD tooth profile belts offer superior grip and load distribution compared to V-belt alternatives, eliminating slip under high-RPM operation—critical when fuel pressure stability directly impacts carburetor or fuel injection tuning. The 56-tooth configuration provides a midrange pulley ratio option, allowing tuners to adjust belt speeds and pump outlet pressure to meet specific fuel flow and pressure requirements.

The 5/8-inch bore accommodates standard small-block accessory shafts, and the face width of 2.5 inches maximizes belt contact while maintaining a compact engine bay footprint. Aeromotive's precision aluminum casting and hardened tooth profile resist wear and maintain timing accuracy across thousands of heat cycles. This pulley is essential for builders running high-performance fuel systems.