
GEAR Ring - Starter motor (40121149)
GEAR Ring - Starter motor (40121149)
Application: EMD starter motor drive arrangement
Part of our Gear product line
The Gear Ring - Starter Motor is identified by EMD Part No. 8416930 and DLW Part No. 16191900. EMD parts references identify 8416930 as the Ring Gear, and EMD gear references identify it as a starter-motor ring gear. The supplied description also associates the listing with 40121149. :contentReference[oaicite:19]{index=19}
How This Part Works
The Gear Ring - Starter Motor is the ring gear associated with the starter-motor drive arrangement. It provides the specified toothed engagement surface for the starter-motor drive.
Signs It's Time to Replace
- Gear-tooth wear: abnormal tooth wear should be assessed
- Pitting: pitting on the tooth surfaces can affect gear engagement
- Cracked or damaged teeth: damaged teeth should be evaluated
- Abnormal starter engagement: changes during starter operation can indicate gear-related concerns
- Excessive tooth wear: significant deterioration can affect serviceability
Apex identifies the Starter Motor Ring Gear by EMD Part No. 8416930 and DLW Part No. 16191900. The established EMD/DLW reference and starter-motor designation provide clear identification for procurement.
See all Gear parts →- Engine Compatibility
- EMD 645 & EMD 710 Series
- Applications
- Locomotive · Marine · Power Generation
- Quality Standard
- ISO 9001:2015 Certified · OEM Grade


