Image is for illustration purposes only. Actual part may vary.

84603-00

AUTO STOP ARM COMP

The part number 84603-00 is listed as an 'AUTO STOP ARM COMP' in the hydraulics category. Search results for similar part numbers include a CARQUEST 84603 hydraulic filter for agricultural tractors and a Navistar 93007600 stop arm with air reflector lights for school buses, but neither matches this hydraulic auto stop arm. The most plausible function, based on the name and category, is a stop arm for a hydraulic vehicle restraint system—like the automatic powerstop described by Gilmore & Kramer [gilmorekramer.com](https://gilmorekramer.com/dock-levelers-all-types/hydraulic-pit-mounted-dock-levelers/automatic-powerstop.html)—which uses a hydraulic stop arm to secure trailers at loading docks. However, no direct documentation or cross-reference for 84603-00 could be verified.