LOFTIN Automated DEF System

The Loftin Automated DEF System (LADS) is a simple solution to a complex problem. Loftin Equipment has created a system which will automatically replenish the DEF tank that is supplied with the engine. The LADS has been designed to work with any major diesel engine brand requiring DEF. The tank features a steel outer shell and a HDPE Poly Plastic inner tank built specifically for DEF. In 4 easy steps, the LADS will be up and running. Operators will simply connect the wire harness from the LADS control panel to the engine maintenance port, and select the specific engine brand in the control panel. Then connect the supply hose to the engine DEF tank drain port, and connect the power clips to a battery.


The unit also features built-in protections against freezing, leaks, spill containment, and low fluid levels. With return on investment more crucial than ever, your customers using the LADS can run their equipment on job sites for days on end, without needing constant DEF refill trips.


Loftin equipment has a standalone DEF tank or a Dual Fluid DEF and Diesel combined tank that the system can work within.


  • 12V, 24V, 120V, 240V Systems Available
  • DEF Diaphragm Pump with Bypass Pressure Valve
  • Stainless Steel Fittings and Connections
  • 20 Ft DEF Supply Hose with SS Quick Connections
  • DEF Tank Vent Loftin
  • DEF Tank Control Panel with 20FT Harness
  • 20FT Power Clips to Connect to Battery
  • Engine DEF Tank Connection Kit with Quick Connect and One-Way Check Valve
  • Temperature and Level Sensors Installed
  • Quick Connect at Tank Suction for Easy Disconnect to Clean/Purge Hose and Pump
  • Freeze, Low Bulk Level, Leak, Obstruction Protection all Built in
  • Over 20 Major Engine Manufacturers Programed into Control Panel
  • Connection Kits for Customer Maintenance Port Connections
  • Poly Tank Man Hole for Easy Cleaning


  View/Download Loftin’s Automated DEF System Information Brochure pdf.


  Contact Loftin Equipment Sales Team – Click Here.


Optional Accessories 

  • Inline DEF Filter
  • Inline DEF Flow Meter
  • Expansion Kit to Supply Second Engine from Same Tank
  • Insulation for Main Pump Room
  • Cold Weather Kit to 0F (Only 24V, 120V, 240V)
  • Extreme Cold Weather Kit to -40F (Only 24V, 120V, 240V)
  • Automatic DEF Nozzle for Manual Fill
  • Stainless Steel Inner Tank (100,250,500,800,1200 Gallon Options)

LADS Tanks Dimensions and Weights

For more detailed information or to purchase from Loftin Equipment, please call 800-437-4376 or by email