Moroso 22641 Original Design 4-Vane Vacuum Pump - Billet Aluminum Design

The nature of vacuum pump is to remove air, blow-by gasses and other contaminants from the crankcase of an engine. Crankase vacuum will increase horsepower by allowing the use of low-tension compression and oil control rings. In which the use of reduces frictional horsepower losses, blow-by intake charge contamination and aids in detonation prevention. Moroso's "purpose built" racing pumps offer all these advantages and more. Whether you have a normally aspirated Small Block or a nitrous equipped Pro-Mod, one of Moroso's vacuum pump offerings with all the needed accessories has you covered. These pumps will suit nearly any engine combination and reuirement.

Billet aluminum design

4-Vane can achieve greater vacuum sooner than comparable 3-vane

Durable vane material for improved efficiency and wear

Easy serviceability

Mounting bracket not included

4.150" O.D body, 5.900" from back of Pump to pulley mounting flange