24 Volt OSGR 10 Tooth Starter Fits Cummins Engines 3957597 428000 1340

24 Volt OSGR 10 Tooth Starter Fits Cummins Engines 3957597 428000 1340

Applications:

Cummins Engine Applications

Specifications:

Description: Starter
Family: Denso R
Voltage: 24
Power: 7.5kW / 10.05HP
Condition: New
Rotation: CW
Starter Type: OSGR
Number of Teeth: 10
Gear OD: 1.575in / 40mm
Mtg Ear 1 Hole: 13.7mm Unthreaded
Mtg Ear 2 Hole: 13.7mm Unthreaded
Mtg Ear 3 Hole: 13.7mm Unthreaded

Replaces these part numbers:

Cummins: 3675290NW, 3957597
Denso: 428000-1340

Why Choose This 24V 10-Tooth OSGR Starter?

Reliability is critical in commercial and industrial settings where downtime costs money. This starter stands out with:

• High-torque OSGR design for faster cranking and reduced wear on the battery and ring gear
• Robust construction built to withstand vibration, extreme temperatures, and heavy use
• Direct OEM replacement matching or exceeding original Cummins and Denso performance standards
• New unit — no core charge, no core return hassles, and full fresh-component reliability
• Cost-effective alternative to dealer-priced originals while maintaining quality

Users and fleet operators frequently choose this starter for its balance of power, longevity, and value helping minimize starting issues and extend engine life.

Installation and Maintenance

Installation is straightforward for qualified mechanics: Align the 10-tooth pinion with the flywheel, secure the three mounting ears, connect the battery and ground cables to the M12 studs, and attach the solenoid wire. Proper torque on all connections ensures optimal performance and prevents electrical issues.

Regular maintenance tips include checking battery health (24V system requires strong, balanced batteries), inspecting cables for corrosion, and ensuring clean connections to maximize starter lifespan.