CAT 320C 320D Swing Gearbox 148-4644: Interchange Guide

The CAT 320C and 320D swing gearbox — both catalogued under part number 148-4644 — is one of the most frequently sourced aftermarket swing drive components for Caterpillar excavators. The PC200-6 is the Komatsu benchmark; the CAT 320 is the Caterpillar equivalent in...