Vacuum Pump Drive Pulley 22T- Radius Tooth

The Vacuum Pump Drive Pulley 22T- Radius Tooth from MOROSO is a precision-engineered component designed for custom engine builders and performance enthusiasts who demand reliability in high-output applications. This HTD (High Torque Drive) pulley serves as the critical interface between your engine's crankshaft and vacuum pump system, ensuring consistent accessory drive synchronization. Whether you're building a street machine, race engine, or restoration project, a properly matched vacuum pump pulley is essential for maintaining belt tension and preventing slippage that could compromise vacuum-dependent brake boosters, HVAC systems, and emission controls.

Constructed from lightweight aluminum and finished with black anodizing for corrosion resistance, this 22-tooth radius-tooth pulley features a 1-inch mandrel bore with a 1/8-inch keyway for secure crankshaft installation. The HTD tooth profile distributes load evenly across the serpentine belt, reducing wear and vibration compared to V-belt or trapezoidal designs. The radius-tooth geometry ensures smooth engagement and disengagement, critical for maintaining belt life when running auxiliary accessories at elevated RPM. At just 0.18 lbs, the minimal rotating mass reduces parasitic drag while the black anodized finish protects against UV degradation and enhances underhood aesthetics in show-quality builds.

This universal pulley suits any builder transitioning to serpentine belt systems or upgrading factory accessory drives for improved efficiency and reliability. Installation is straightforward—slide the pulley onto your crankshaft, align the keyway, and tighten the retaining bolt to specification. Verify proper belt alignment and tension after installation to ensure even load distribution and prevent premature wear. When paired with matching HTD pulleys for alternator, water pump, and power steering pump applications, you'll achieve optimal belt life and eliminate the slippage issues common to mismatched pulley profiles.