40635 | Eaton / Dana-Spicer 12V 2-Speed Diff Lock Motor | New OEM (NOS)

40635 Eaton Dana 2-Speed Motor | 12V Electric Diff Lock | 113743 | Fasco 2807-508-021 | New Genuine NOS

The 40635 (also referenced as 040635) is a new old stock (NOS) genuine Eaton/Dana-Spicer 12V electric shift motor for two-speed axles using the Eaton 113743 differential lock assembly. Direct OEM replacement for reliable electric actuation in heavy-duty drivetrains.

Call for pricing & availability: 419-522-3320.

Specs & Features

• Part Number(s): 40635 / 040635
• Manufacturer: Eaton / Dana-Spicer
• Type: 12V Electric Shift Motor (2-Speed Diff Lock)
• Cross References: 113743 (Eaton), Fasco 2807-508-021
• Voltage: 12V
• Condition: New Genuine (NOS)
• Application: Eaton 2-speed differential lock systems

What’s Included

• (1) Eaton / Dana-Spicer 12V Electric Shift Motor – 40635

Fitment Notes

• For 2-speed axles utilizing Eaton 113743 diff lock assembly
• 12V version — confirm system voltage before ordering

DPX Drivetrain Tools Hub

Free tools built by rebuilders for truckers and fleets — Road Speed & Ratio Calculator, PTO shimming procedures, gear ratio comparison charts, and our full IPL library for instant parts identification.
Open DPX Drivetrain Tools Hub →

Image Disclaimer

Photos may show actual product or an equivalent unit. NOS items may exhibit minor finish changes or shelf wear from storage.

Warranty Policy

Sold as-is; no warranty or returns. Please verify fitment before purchasing. Discount Parts Exchange (DPX) – trusted since 1997.

Shipping / Location

• Ships from our Mansfield, Ohio warehouse (419-522-3320)
• Parcel or LTL options available based on packaging and weight
• Warehouse Bin Location: DPX_OH_BR549_DAN

Ohio’s Premier Heavy-Duty Drivetrain Rebuilder — Built to Perform. Trusted to Last. Discount Parts Exchange (DPX).