Jul 15, 2018 · What would be a reasonable Iridium Plug change interval? I have Denso Iridium Power II's, which Denso rated for 30k miles back in 2014 or so when I put them in. I rechecked …

Dec 31, 2017 · Since Iridium spark plugs last so long I fell behind on my sparkplug numbers. About 70,000 miles ago I put in 41-110 sparkplugs. Sometime along the way the number …

Apr 27, 2010 · The TT series is the aftermarket adaption of the Super-Ignition Plug Denso created for the Toyota D4-S engines, minus the side electrodes. I’ve used the Platinum TTs in a …

Oct 7, 2025 · 2026 Honda NT1100. Photo: Honda The Euros just announced a fresh coat of paint for the bike in 2026, and presumably the US will see similar options next year. Europe gets …

Nov 20, 2006 · The Laser Iridium plugs have a wider center electrode, whereas the IX has a more narrow one. I think that's why the Laser Iridiums last longer as well as the double precious …

May 10, 2015 · There is little I can find about Ruthenium spark plugs, except it's the new sliced bread, better, last longer, etc etc. If the Laser iridium have indeed only one iridium (or …

Feb 4, 2005 · The pure Iridium would probably offer a longer service life before significant deterioration in performance. Quote: I'm using the Autolite XP plugs, iridium center+platinum …

Jul 19, 2006 · NGK calls their OEM style precious metal plugs "LASER IRIDIUM" or "LASER PLATINUM". Denso calls their aftermarket plugs "IRIDIUM POWER". I believe their OEM …

Apr 16, 2013 · Price-wise, the AC Delcos are only $0.10 cheaper than the NGK Iridium IX plugs, though the NGK have iridium cores instead of copper. No, the ACDelco are iridium 41-101 and …

Feb 10, 2015 · NGK Laser Iridium ILZFR6C-11K Bosch Double-Iridium 0 242 240 715 They are going to get installed in a Mitsubishi Lancer 4A91 engine that has been converted to LPG. The …