Mon-Fri 8am-5pm PSTLive Customer Service & Technical Support
888-800-9629
(0) $0.00
|
DENSOProducts.com is a full-line DENSO distributor.  We are not DENSO. To contact them, click here.
Learning Center
Share |

How Long Do Iridium Plugs Last?

January 24, 2017

A standard iridium plug such as Denso's Iridium Power series has an iridium center electrode, however the ground electrode is a traditional nickel construction.  Therefore, the ground electrode will wear out first.  Typically we have found you can expect to get 60,000 to 80,000 miles on an unaltered motor. However, because gradual wear will "round-off" firing points over time, the concentrated firing power and voltage requirement benefits will be reduced.  For this reason, Denso advises replacement after 30,000 miles.

Denso's new Iridium TT series features a 0.4mm iridium fine wire center electrode and 0.7mm platinum fine wire ground tip.  Twin-Tip technology enables larger spark concentration and explosion, resulting in a more complete combustion and increased fuel economy. Tested to last beyond 100,000 miles, with minimal loss to performance.

Denso long life iridium plugs have iridium center and a platinum ground electrodes. If installed in a regular engine, they would likely last longer than most people keep their car (barring any motor problems that can cause premature plug death).  All Denso long life iridium plugs are an OEM design, made for a specific engine.  Some feature a special resistor or electrode design, depending on the OE requirements.  In their OE application, Denso's long life plugs can last up to 120,000 miles.

question?
call us (888-800-9629 )
LOOKING FOR WHOLESALE PRICING? Contact Us for Quotes
SPARKPLUGS.COM
PO Box 772
Sun City, CA 92586
CUSTOMER SERVICE
Toll Free: 888-800-9629
Out of U.S call 951-672-8501