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Kim Sullivan, shown with his wife Norma, is the owner of Killingsworth Gear. Kim has an extensive wealth of knowledge in geardrives, booster pumps and Cummins engines.


WANT TO BUY Killingsworth Gear will buy any 100HP/125HP geardrive in any shape or condition. Call Kim Sullivan with what you have!

  • Booster Pumps Sales or Rentals
  • Installation of Diesel and Natural Gas Engines
  • Irrigation Pump Retrofits
  • Complete Gear Drive Rebuilding
  • Fabrications and Configurations
  • Custom Irrigation Systems
  • Complete Machine Shop Services
  • System Consultation & Design



world ag expo 2013
A big THANK YOU to all who visited the Killingsworth Gear booth at the 2013 World Ag Expo.  This year was a huge success and we owe it all to you.

If you are planning on buying or replacing an engine soon, it would be advisable to buy a Tier 3 engine versus a Tier 4 Engine.


Let Killingsworth Gear build or rebuild a quality irrigation system to work right the first time, and a long time!

Throughout the years, we have successfully evolved with the demands of our customers and their needs. Our diesel engine setups have always set a precedent of being sleek, dependable, and the most efficient source of power. Above all, we have always been at the cutting edge of quality and efficiency.

When Quality counts, count on Killingsworth Gear Drives, Engines and Booster Pumps .. Your Gear Drive Specialists Since 1952!

  • 24-Hour Emergency Work and Repairs
  • References Available
  • Complete Gear Drive Rebuilding
  • Custom Applications
  • Quality Gear Drives from Randolph, DeRan, Amarillo and Johnson Gear
  • Pumps from Berkeley, Western and Arms

When it comes to the design and selection of the proper components for our Agricultural well work, we always turn to Killingsworth Gear. We choose them because of their knowledge and expertise. They only deal with top quality components and they know how to put it together and make it happen. We focus on the issue of reliability and operating cost and we have very little tolerance for anything other than a totally knowledgeable and professional approach. We have known the Sullivan family for years and respect their integrity and commitment to excellence. They have a strong team behind the scenes that makes it all happen.

Bill Pitman Madera, CA