When Experience Matters!


BJE Black Knight DEF Tank Gauge


Numbers decrease as fluid level lowers indicating how many inches are left until the tank is empty. For use with oil, waste oil, diesel fuel, antifreeze and other fluids with a high flash point.

  • One gauge accommodates tanks up to 99″.
  • Measures from 99″ – 0″.
  • 2″ NPT threads.
  • Large number display.
  • Molded housing.
  • Direct drive.
  • Stainless steel chain.
  • Oversized, DEF compatible anodized aluminum float assembly rotates to prevent chain entanglement.
  • For use with diesel exhause fluid (DEF).
  • New swivel allows easy orientation of gauge after installation.
Weight 4 lbs
Dimensions 7 × 7 × 10 in

Horizontal Float, 2″ BSPT, Horizontal Float, 2″ NPT, Vertical Float, 2″ NPT