Overview
The 37MT is a straight drive starter for medium duty applications with engine displacement up to 9.0L with jump start protection. The 37MT are now obsolete and no-longer in production as on 1st May 2026. REMAN Delco Remy 37MT starter motors in 12V variant are available for purchase.
Key Features
Performance & Electrical Specs
- System Voltage: Available in both 12-Volt and 24-Volt configurations.
- Peak Power Output: * **12V Models: Delivers up to 4.6 kW of cranking power.
• 24V Models: Delivers up to 7.0 kW of cranking power. - Motor Type: Wound field, straight-drive design that provides consistent high-torque performance.
- Positive Shift Engagement: Ensures the pinion gear consistently and reliably engages with the engine's ring gear, reducing gear clash and increasing starter life.
- Rotatable Drive Housing: Features an adjustable/rotatable nose housing flange to allow flexible mounting angles and expand vehicle application coverage.
- Pinion Support: Built with a rugged, traditional nose-style pinion support to withstand harsh cranking forces.
- Mounting Standards: Standardized to fit SAE #1 or SAE #3 mounts.
- Pinion Configurations: Typically comes in 10-tooth, 11-tooth (metric), or 12-tooth options depending on the exact vehicle application.
- Weight: Heavy-duty build weighing roughly 50.0 lbs (22.7 kg).
- Frame Diameter: 5.12 inches (130 mm).
- Rotation: Available in both clockwise (CW) and counterclockwise (CCW) rotations.
- Jump-Start Protection: Many models feature built-in protection that meets SAE J1493 safety standards to prevent accidental starter engagement during jump-starting.
- Grounding Options: Offered in both grounded (frame-grounded) and insulated configurations to match specific fleet electrical system designs
Applications
The 37MT is widely used as an OEM and remanufactured solution for medium-duty regional haulers, vocational trucks, and school buses—frequently found on brands like Mack, Volvo, and Peterbilt.
