HTD CRANKSHAFT PULLEY 21 TOOTH 1-1/8 ID 1/8IN KEY

The HTD Crankshaft Pulley 21 Tooth 1-1/8 ID 1/8in Key from Jones Racing Products is a precision-engineered timing component designed for marine engines that require reliable belt synchronization. This pulley is essential for maintaining critical timing accuracy between the engine's crankshaft and accessory drives, such as fuel pumps and alternators.

Featuring 21 teeth, a 1-1/8 inch inner diameter bore, and a 1/8-inch keyway, this HTD (Synchronous) pulley ensures positive engagement with the crankshaft, preventing slip or creep under load. The HTD tooth profile represents a modern advancement over traditional V-belt designs, providing superior torque transmission and reducing belt wear, which is crucial in the demanding marine environment.

Ideal for boaters rebuilding or upgrading marine engines, this pulley is particularly beneficial for those restoring vintage inboards or optimizing auxiliary charging systems. Always verify compatibility by checking your engine's crankshaft bore diameter to ensure a proper fit.