HUMVEE M998 M35 M939 SPEEDOMETER 0-60MPH MS39021-2 , 6680-00-933-3599

Description:

The Humvee M998 / M35 / M939 Speedometer MS39021-2 is used in military vehicle instrumentation systems to provide accurate vehicle speed and distance measurement for operators and maintenance personnel. Commonly installed in AM General Humvees, M35 2.5-ton trucks, M939 5-ton trucks, and numerous U.S. military tactical vehicles requiring a rugged mechanical speed indication system. Maintenance teams and military vehicle restorers use this speedometer for dashboard repairs, vehicle restorations, and replacement of failed speed indicators. The unit is identified by NSN 6680-00-933-3599 and complies with military specifications for severe-duty operation.

Applications:

The Humvee M998 M35 M939 speedometer MS39021-2 is commonly used in tactical vehicles, cargo trucks, armored vehicles, military support equipment, and restoration projects where accurate vehicle speed and odometer readings are required. The mechanical cable-driven design provides reliable operation without requiring electronic speed sensors and is widely used across numerous military vehicle platforms. The Humvee M998 M35 M939 speedometer is compatible with standard military speedometer drive cables and transmission drive systems.

Technical Specifications:

• Manufacturer part number (MPN): MS39021-2
• NSN: 6680-00-933-3599
• Product type: Mechanical speedometer
• Speed range: 0 to 60 MPH
• Speedometer type: Mechanical cable-driven
• Includes odometer: Yes
• Scale type: Miles per hour (MPH)
• Drive method: Flexible speedometer cable
• Gauge diameter: Approximately 3-3/8 in (85 mm)
• Compatible vehicles: M998 Humvee, M35, M939, M151 and other M-series vehicles
• Installation location: Dashboard instrument panel
• Military specification: MIL-DTL-10215
• Federal Supply Class (FSC): 6680 – Mechanical Motion Measuring Instruments
• NIIN: 009333599
• Alternate part numbers: M102151A, 503C, 808913, 8376375, 640131
• Operating environment: Military and severe-duty applications
• Service application: Repair, restoration, and replacement component
• Country of origin: United States typical for original production units.

Common Replacements:

• Stewart-Warner 503C Military Speedometer
• World American M-MS39021-2 Speedometer
• Perkins 640131 Speedometer Assembly