Deutz engines. Iridium Saver DDI.
Cross reference: RB75WPCC, 7307, 18GZ5-77.



The GL3-5 Industrial Ultimate Durability Double Iridium Saver-DDI spark plug reduces maintenance costs by extending work life in high compression lean burn engines. This unique design guarantees high reliability for withstanding high combustion pressure by incorporating a stress resistant monolithic resistor that adheres to the resistor glass in the high temperature furnace.

Specific details of this model include:

  • Thread Size: 18mm x 1.5
  • Reach: 20.6mm (13/16″)
  • Hex Size: 20.8mm (13/16″)
  • Gap: 0.3mm (.012″)
  • 100% Pre-Fired: All Denso spark plugs are 100% pre-fired to assure the highest quality possible.
  • Copper-Glass Seal: Bonds the center electrode and insulator together for a gas-tight seal. Maintains proper heat and excludes hot combustion gases.
  • Purified Alumina Powder Insulator: Provides exceptional dielectric strength and thermal conductivity allowing the material to stand up to extreme stress.
  • Solid terminal nut.
  • Platinum-alloy tipped fine wire ground electrode, with an Iridium pad on the ground electrode and an Iridium pad without cross grooves on the center electrode.

The Denso GL3-5 Industrial Ultimate Durability Double Iridium Saver-DDI works in the following engine applications:

DEUTZ MWM: G620 V-8, TBG616 V-8, TBG616 V-12, TBG616K V-8K, TBG616K V-12, TBG616K V-16K, TBG620 V-8, TBG620 V-12, TBG620 V-16, TBG620K V-12K, TBG620K V-16K