This Peterson pulley flange is machined from billet aluminum and anodized for durability, designed to press into compatible pulleys and act as a belt guide. It fits 1" and 1 1/4" wide pulleys, is sold individually, and requires re-drilling the access hole after fitting. The flange is specified to fit pulley part number 06-1337 for customers adding guided belt retention to Peterson pulley parts.
Peterson Fluid Systems Flange Pump Pulley - Single 37T HTD