John Deere 12-Volt Conversion Kits*

*For Models 3010, 3020, 4010, 4020 (or call us for any other John Deere options for alternator and starter solutions)

This kit converts your John Deere tractor to 12V, extends battery life, provides better cranking, and allows for 12V accessories like lights for night-time farming.

This kit consists of:

  • a remanufactured alternator with pulley,
  • mounting hardware for proper alignment (already mounted on alternator above),
  • a new OE MAHLE (formerly Letrika Iskra) sealed 4.0 KW, high torque 12V starter
  • and detailed instructions.

Call us today at 1-888-515-2726 or email us at for an up-to-date quote if you would like to upgrade your John Deere tractor from 24V to 12V today. We offer high-quality parts only and same-day shipping.


Also, if you need an alternator or a starter for ANY John Deere product, make sure to use our Catalogue at