Driving on LPG or CNG will reduce the lifetime of a spark plug by 25-30%. On the other hand, they are also a better option than platinum plugs in terms of consistency and … 6 Spark Plugs Denso Long Life Iridium Power Fits: Toyota Lexus 3297 / SK20R11. Modern engines are often equipped with high-performance spark plugs, so the difference is not as large. However, this depends on the engine. Employing a revolutionary new 360° laser-welding process, DENSO has created a spark plug unlike anything on the market today. These two are easily the best platinum plugs on the market in terms of … The summary for Laser specifies a platinum disc on the ground electrode, where IX only mentions the iridium center. The NGK 6619 Iridium IX Spark Plugs snags the top pick in our spark plug comparison because they offer the best mix of high-performance, fuel efficiency, durability, and dependability. Not all iridium spark plugs are the long-life type, there are also some that have the same lifespan as a normal spark plug: 20,000 km (light automobiles: 10,000 km, motorcycles: … Through continual dedication to research and development, DENSO has produced some of the sector’s most important innovations, including U-groove technology, the world’s smallest iridium tip and the first protruding ground electrodes. This article covers some of the most common frequently asked questions, or FAQs, installers may encounter as they work with DENSO spark plugs.Â. With a 0.4 mm diameter iridium alloy center electrode and a special ground electrode, IRIDIUM POWER has excellent and unprecedented spark performance. Denso's are about $11 ea. I wanted long life plugs. How to spot counterfeit Denso Spark Plugs: DENSO 3426 Iridium Long Life FK20HR-11 2018 Hi everyone, I recently installed a set of what I believe are very well made counterfeit spark plugs in my 2007 V6 AWD. It may not display this or other websites correctly. … You must log in or register to reply here. 0.7mm iridium tipped laser welded fine wire center electrode and platinum tipped ground electrode. I did the plugs because my gas mileage was horrible, and surprise surprise installing counterfeit plugs did … Denso Is considered a "Toyota" replacement...NGK is suitable replacement.. IRIDIUM RACING. Should I apply grease to the spark plug thread? Denso iridium long life spark plugs are factory installed on luxury vehicles by automakers such as GM, Toyota, Honda and Mitsubishi. IRIDIUM POWER. Buy online, pick up in-store in 30 minutes. Find Denso Iridium Long Life Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! This Denso Iridium Long Life Spark Plug fits your 2004-2013 Subaru Forester 2.5L H4 and is perfect for a tune up or performance upgrade. JavaScript is disabled. The 0.7mm Iridium tip appears to be the long-life version of the Iridium plugs currently available; compare with smaller diameter Iridium tip versions marketed to "tuners" and others wishing to wring out an extra 1% of peak horsepower at max rpm. Denso Iridium Spark Plug Iridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Now, DENSO manufactures OE-quality spark plugs to suit every application and motoring need across the following categories: There are many factors to consider when choosing the right spark plug and during the installation process. I Used Denso SK20R11 (Toyota OE Replacement Parts), to replace the factory NGK IFR6A11, for my '99 LX470. Under normal operating … Properties of DENSO's patented Iridium alloy have broken through the spark plug technology barrier. For this reason, Denso advises replacement after 30,000 miles. IX is a cheaper alternative that won't last as long. But if you plan to keep the plugs for 120K then go with Denso Iridium Long Life or NGK Laser Iridium. For the price they are good. There are many factors to consider such as dimensions, projection and heat range. For more information about cookies, privacy and copyright, please refer to our full privacy policy, visible here. It produces stable, high response under various operating conditions. When upgrading spark plugs to Iridium TT or Iridium Power, power output improvements up to 5% have been measured. These spark plugs are often found in luxury vehicles for automakers such as GM, Toyota, Honda, and Mitsubishi. At the same time, combustion starts near the side electrodes and the heat generated will burn the carbon fouling. Try calling 251.479.9451 from 9 AM - 6 PM CST. Typically we have found you can expect to get 60,000 to 80,000 miles on an unaltered motor. I used NGk's in the 40 and loved them but I wanted OEM everything for my new one. With nickel plugs, especially with motorcycles, the gap may need adjustment. The other – Denso’s legendary TT plugs. DENSO SK20R11 LONG LIFE IRIDIUM POWER SPARK PLUGS 4-PCS OEM TOYOTA LEXUS. DENSO takes your privacy very seriously. $33.55. Denso iridium long life spark plugs are factory installed on luxury vehicles by automakers such as GM, Toyota, Honda and Mitsubishi. Unbeatable spark technology fine-tuned for racing. The main performance improvements are generally a … … What this means is the Denso Iridium TT is equipped with two tips: a 0.7-millimeter Platinum ground electrode, and a 0.4-millimeter iridium center electrode. How much of a performance increase can I expect when upgrading my spark plugs? For a better experience, please enable JavaScript in your browser before proceeding. When upgrading spark plugs to Iridium TT or Iridium Power, power output improvements up to 5% have been measured. I wasted my money a pre-set gap plug, too, up to 5 % been. 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