Stewart Warner 8713233-1 Speedometer Hour Meter

Stewart Warner 8713233-1 is a USGI military speedometer hour meter used to record operating hours in equipment that employs Stewart Warner speedometer instrumentation. Also listed as Stewart Warner 501L and cataloged under 150-6941, this part carries the 8713233-1 designation and can function as a companion component within compatible speedometer assemblies. The hour-count it provides supports maintenance scheduling and uptime tracking by documenting cumulative run time, which is especially important for military vehicles and related systems that rely on Stewart Warner instrumentation for monitoring and reliability. With its multiple identifiers, 8713233-1 facilitates cross-reference in supply chains and maintenance logs for legacy equipment that requires Stewart Warner instrumentation. In practice, hour meters of this type are installed in dashboards or instrument panels to provide verifiable usage data and help ensure maintenance intervals are met in field operations.