Find Input Part OEM number or machinery model INDUSTRIAL TRACTOR Select model INDUSTRIAL TRACTOR Caterpillar parts: For full view, you need register HA771 INDUSTRIAL TRACTOR HA771 HAF (2003) HA871 INDUSTRIAL TRACTOR HA871 HAG (2003) TK371 INDUSTRIAL TRACTOR TK371 WBG (2003) TK381 INDUSTRIAL TRACTOR TK381 WBH (2003) online parts diagram catalog Search for genuine and aftemarket cat parts.