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h2o Products - Industrial Spark Plugs & Accessories - DENSO Spark Plugs
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The DDI's key to long plug life

DENSO has launched the latest generation of hardwearing spark plugs − the DENSO DOUBLE IRIDIUM (DDI) spark plug. DDI spark plug technology improves and extends the spark plug's lifespan and requires significantly less maintenance than competitor spark plugs. The DDI spark plug is particularly effective when used in biogas engines. Try DENSO DDI spark plugs today.

Unique "Iridium alloy"
A unique, high welding point "Iridium alloy" developed and patented by DENSO, dramatically improves wear resistance compared to other Iridium plug.
Patent:Japan (2877035), UK (2302367), USA (6094000)

Iridium Design
Iridium pads both on center electrode and on ground electrode, to minimize spark gap expansion.



Convergence laser welding
Wedge by laser welding fixes Iridium alloy pad on ground electrode securely, which realizes high reliability in high temperature combustion engine.

Proving longer life
Gap expansion is suppressed by Double Iridium Pads on both sides. This suppression of gap expansion results in a longer life than Iridium Saver.

360° laser welding
Secure welding of the Iridium tip by "360° laser welding" can withstand all extreme engine conditions.
Patent: Japan (2921524), USA (6078129)

The SAVER's key to long plug life

DENSO's OEM expertise and commitment to innovation enables them to remain at the forefront of cutting-edge gas engine spark plug development. The unique and specialist technology used in the Iridium Saver and Iridium Saver Performer spark plugs range extends their lifespan, making them ideal for high-compression lean-burn engines. Iridium Saver and Iridium Performer spark plugs also help to maximise engine performance and deliver extra durability. Because they require minimal maintenance compared to standard plugs, Iridium Saver and Iridium Saver Performer spark plugs increase service interval times. Try DENSO's Iridium Saver or Iridium Saver Performer spark plugs today.

Unique"Iridium alloy"
A unique, high welding point "Iridium alloy" developed and patented by DENSO, dramatically improves wear resistance compared to other Iridium plug.
Patent: Japan (2877035), UK (2302367), USA (6094000)

360° laser welding
Secure welding of the Iridium tip by "360° laser welding" can withstand all extreme engine conditions..
Patent: Japan (2921524), USA (6078129)




Cross Groove design (M18 Spark Plug)
4 small electrodes created by Cross Groove improve sparking performance and suppress dispersion in voltage value, for an outstanding voltage decrease.
Patent: USA (6215234)

Proving longer life
Required voltage is suppressed by 1) unique "Iridium alloy" 2) Cross Groove electrode, resulting in a longer life than conventional plug.


Sales Flyer DENSO


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