Free shipping . Details Centre Electrode. Find NGK Iridium IX Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! Iridium IX ®. NGK (4589) IFR6T11 Laser Iridium Spark Plug - Set of 4. We are not NGK Spark Plugs USA. 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). Be the first to know about sales and promotions. Iridium Racing Plugs   Denso iridium racing plugs and some NGK iridium racing plugs have iridium center and a platinum ground electrodes. $65.00. 13 people found this helpful. OE Iridium Long Life Plugs   NGK Laser Iridium and Denso Long-Life Iridium plugs feature an iridium tipped fine wire center electrode, and platinum tipped ground electrode. NGK builds two types of iridium spark plugs: OE Iridium and Iridium IX ®. $13.39. $44.65. It offers better performance than platinum, but with the downside of a higher cost. How Long Do NGK Iridium Plugs Last? This can all be attributed to the iridium alloy tip that ensures consistent performance even in extreme hot or cold weather. Free shipping . But, these usually come in heat ranges too cold for an unaltered motor and are usually used in racing applications where all bets are off. 4.7 out of 5 stars 150. Aftermarket Long Life Iridium Plugs    Autolite Iridium XP, Champion Iridium, Bosch Iridium and Denso Iridium TT bring the features of OEM iridium long life plugs to the market, with an iridium or iridium enhanced fine wire center electrode and platinum or iridium/platinum tipped ground electrode. Standard style Spark Plug *NGK Spark Plugs are designed to OEM requirements and as such, a variant of each of the above styles may not be available as it may not be an OEM requirement. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency, and long life. But plug manufacturers have to temper their projections as driving conditions and motor modifications differ. On some applications, a double-platinum or double-iridium spark plug may be recommended. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs. Engineered to perform under the most extreme conditions, NGK glow plugs help your diesel engine get off to a fast and reliable start. Therefore, the ground electrode will wear out first. Glow Plugs. OE Iridium Long Life Plugs NGK Laser Iridium and Denso Long-Life Iridium plugs feature an iridium tipped fine wire center electrode, and platinum tipped ground electrode. Whenever you have less debris, you have a smooth running ignition system. Especially on most new cars (last 10+ year) as they have an ignition coil per plug. Traditional Single Iridium Plugs   Denso's Iridium Power and NGK's Iridium IX series have iridium fine-wire center electrodes with tranditional nickel ground electrodes. Additionally, because gradual wear will "round-off" firing points over time, the concentrated firing power and voltage requirement benefits will be reduced. This type of spark plug uses platinum or iridium on the center and ground electrodes, not just the center electrode to improve wear resistance and extend the service life of the spark plug. $14.99. 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. The world leader in spark plug technology for over 80 years. Typically we have found you can expect 50-80k miles on a traditional iridium plug. 4 New NGK IRIDIUM IX Spark Plug LTR6IX-11 # 6509. Other types can last up to 100,000 miles. Benefits. Don't just ask for a spark plug, insist on NGK. 6 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 4469. NGK Spark Plugs can be found in every racing venue throughout the world. Laser welded Iridium center electrode tip The Denso spark plug (Iridium) can minimize heat loss, and the smaller electrode diameter can improve ignitability. OE Iridium Long Life Plugs NGK Laser Iridium and Denso Long-Life Iridium plugs feature an iridium tipped fine wire center electrode, and platinum tipped ground electrode. The NGK Iridium IX is a spark plug designed to offer lasting ignitability, superior anti-fouling characteristics, and sharper throttle response. G-Power Platinum Alloy Spark Plugs offer superior performance with improved fuel efficiency, lower emissions, and quicker starts, 0.6mm laser welded fine Platinum tip reduces required voltage ensuring high durability and a consistently stable spark, Special configurations are used for the insulator noses to improve throttle response and prevent fouling with corrugated ribs on insulator to prevent flashover, Platinum alloy ground and center electrode for greater spark while ensuring precise gap during the life of the plug, Trivalent Metal Plating offers superior anti corrosion and anti seizing properties while the triple gasket seal eliminates combustion gas leakage, Designed to operate over a much wider heat range than ordinary plugs. NGK Iridium IX spark plugs feature an ultra-fine center electrode that's designed just thick enough to ensure the maximum durability and life of the spark plugs—and just thin enough to create an accurate and consistent spark. And usually, Bosch, NGK or Denso plugs will come factory pre-gapped. Free shipping . NGK gives them a life expectancy of 40-50k miles. Add to Cart Add to Cart ... or broken plugs. $40.17 $ 40. 6 PCSNEW -- DENSO #4504 PLATINUM T T Spark Plugs -- PK20TT. When a copper plug lasts for around 20,000 miles, the average lifespan of an iridium plug is 40,000 – 60,000 miles. Those that do will have either a standard ground electrode design, usually in nickel alloy, or a solid platinum bar ground (similar to the Denso racing design) and a 0.4mm Iridium alloy centre electrode. Service Life ** 20,000 – 40,000km. Only 4 left in stock - order soon. All dual precious metal plugs are designed to provide maximum longevity. 17. Normal copper plugs only last about 20,000 miles. 3) Good Price. Therefore, NGK gives them a life expectancy of 40-50k miles and Denso assigns a recommended replacement interval of 30k miles. Under normal operating conditions, expect a good 100k miles out of these plugs. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Iridium spark plugs feature a fine wire center electrode that is designed to conduct electrical energy better and increase firing efficiency. Modern engines rely on more than one spark to ensure an optimum combustion and require smaller spark plugs so there is enough room for all the valves in a cylinder, etc. NGK Spark Plugs has been developing spark plug technology since the 1930s and manufacture plugs for every type of automotive engine, as well as for motorcycles, marine, horticultural, plant and many other applications. Users can get a longer life from the Denso spark plug, too, up to 63,000 miles. 4.7 out of 5 stars 175. If you’re not a fan of the idea of replacing spark plugs every 60,000 miles or so, iridium can reach up to a 120,000-mile life cycle. Plug LTR6IX-11 # 6509 be recommended Subaru Turbo 2.5L EJ255 EJ257 2005-2013 produces and stocks well excess. 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