Moroso introduces Part No. 23525, a 5 inch in diameter V-Belt Crankshaft Pulley that is machined from billet aluminum. It is ideal for driving alternators and and/or vacuum pumps at optimum speed. Fits any 1" Dia. crank-driven mandrel with 1/8" x 1/8" keyway and is CNC machined from billet aluminum with a hard-coat anodized finish. May be used with Moroso Vacuum Pumps Nos. 22640, 22641, 22642, 22644, 22840, 22842, 22843 and Vacuum Pump Pulleys Nos. 64885 & 64887.