{"product_id":"ngk-iridium-spark-plugs-honda-k-series","title":"NGK Iridium Spark Plugs for RSX\/TSX\/Civic Si\/Fit","description":"\u003cul\u003e\n\u003cli\u003eSet of 4 Spark Plugs \u003c\/li\u003e\n\u003cli\u003eFits K20A, K20Z, K24A, R18, and L15A Engines \u003c\/li\u003e\n\u003cli\u003eIridium Tip Ensures Consistent Spark \u003c\/li\u003e\n\u003cli\u003eDirect Factory Replacement Part \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n \u003cli\u003e\u003ca href=\"#VehicleFitment\"\u003eVehicle Fitment\u003c\/a\u003e\u003c\/li\u003e   \u003cli\u003e\u003ca href=\"#Included\"\u003eIncluded\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eNGK Iridium IX Spark Plugs - Honda\/Acura K Series\u003c\/h3\u003e\n\n\u003cp\u003eYou're doing a tune-up on your K series and you need spark plugs that'll actually last more than 30,000 miles without the gap opening up and causing misfires. Stock nickel plugs are cheap but they wear out fast. The center electrode erodes, the gap opens from 0.044 inch to 0.055 inch after 40,000 miles, and now your ignition system's struggling to jump that wider gap. You get misfires under load, rough idle, and poor fuel economy. NGK Iridium IX plugs use an iridium center electrode instead of nickel. Iridium's six times harder than platinum and it doesn't erode like nickel does. The plug maintains the factory gap for 60,000-80,000 miles instead of wearing out at 30,000. You're getting consistent spark, better throttle response, smoother idle, and you're not replacing plugs every two years. These fit K20 and K24 engines in your RSX, Civic Si, TSX, Accord, CR-V, and Element. They're a direct replacement for the stock plugs. Same heat range, same reach, same thread pitch. Pull the old plugs out, gap these to 0.044 inch, thread them in, and you're done.\u003c\/p\u003e\n\n\u003ch4\u003eHere's Why Iridium Lasts Longer Than Nickel\u003c\/h4\u003e\n\n\u003cp\u003eYour stock spark plugs use a nickel alloy center electrode. Nickel's cheap and it works but it's soft. Every time the plug fires, a tiny amount of material erodes off the center electrode and the ground electrode. After 30,000 or 40,000 miles, enough material's worn away that the gap's opened up. Your plugs were gapped at 0.044 inch when they were new. Now they're at 0.050 or 0.055 inch. That wider gap requires more voltage to jump. Your ignition coils are working harder to fire the plugs. Eventually the coils can't generate enough voltage and you get misfires. Iridium's way harder than nickel. It erodes slower. An iridium plug maintains its gap two or three times longer than a nickel plug. You're getting 60,000-80,000 miles out of iridium plugs vs. 30,000-40,000 miles out of nickel plugs. That's fewer tune-ups and more consistent ignition performance over the life of the plug.\u003c\/p\u003e\n\n\u003ch4\u003eFine Wire Center Electrode for Better Ignitability\u003c\/h4\u003e\n\n\u003cp\u003eNGK uses a fine wire iridium center electrode on these plugs. The electrode's 0.6mm in diameter. That's thinner than the nickel electrode on stock plugs. A thinner electrode concentrates the electrical energy into a smaller point. That makes it easier for the spark to jump the gap. You get more reliable ignition, especially on cold starts or when the engine's under load. The fine wire design also runs cooler than a thick electrode because there's less mass to heat up. That reduces the chance of pre-ignition or hot spots in the combustion chamber. The ground electrode's tapered. NGK cuts the ground electrode at an angle so the spark has a clean path to jump from the center electrode to the ground. That improves starting, idling, and throttle response. You'll notice the difference on cold mornings when the engine fires up faster and idles smoother.\u003c\/p\u003e\n\n\u003ch4\u003eTrivalent Metal Plating Prevents Seizing\u003c\/h4\u003e\n\n\u003cp\u003eNGK plates these plugs with trivalent metal plating. That's a corrosion-resistant and anti-seize coating on the threads. If you've ever tried to remove spark plugs that have been in the head for 60,000 miles and the threads are corroded, you know what a pain that is. The plugs seize in the threads and you're fighting to get them out without stripping the threads or breaking the plug. Trivalent plating prevents that. The coating keeps the threads from corroding and it acts as an anti-seize so the plugs come out clean when it's time to replace them. This is especially important on aluminum heads like the K series has. Aluminum's soft and the threads strip easily if the plug seizes.\u003c\/p\u003e\n\n\u003ch4\u003eHere's When You Use Iridium IX vs. Ruthenium HX\u003c\/h4\u003e\n\n\u003cp\u003eNGK makes two premium plug lines for performance applications: Iridium IX and Ruthenium HX. Iridium IX is the upgrade from stock nickel plugs. It's for stock engines, mildly modified engines, and street cars that see occasional spirited driving. If you're running a stock K20 or K24 with bolt-ons (intake, exhaust, tune), Iridium IX plugs are perfect. They last longer than stock plugs and they perform better. Ruthenium HX is the step up from Iridium IX. Ruthenium's even more durable than iridium and the plugs are designed for modified engines, turbo builds, and track use. If you're running a turbo K series making 300+ whp or you're tracking your car regularly, upgrade to Ruthenium HX. For most street cars and daily drivers with mild mods, Iridium IX is the right choice. You're getting way better durability than stock plugs without paying for features you don't need.\u003c\/p\u003e\n\n\u003ch4\u003eWhat You Get\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNGK Iridium IX spark plugs for K20\/K24 engines\u003c\/li\u003e\n  \u003cli\u003eFine wire iridium center electrode (0.6mm diameter)\u003c\/li\u003e\n  \u003cli\u003eTapered cut ground electrode for improved ignitability\u003c\/li\u003e\n  \u003cli\u003eTrivalent metal plating (anti-corrosion and anti-seize)\u003c\/li\u003e\n  \u003cli\u003eIridium alloy six times harder than platinum\u003c\/li\u003e\n  \u003cli\u003e60,000-80,000 mile service life (vs. 30,000-40,000 for stock nickel plugs)\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for OEM spark plugs (same heat range and reach)\u003c\/li\u003e\n  \u003cli\u003eSold individually (K series engines use 4 plugs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFits These Cars\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e2007-2009 Acura MDX\u003c\/li\u003e\n  \u003cli\u003e2005-2008 Acura RL\u003c\/li\u003e\n  \u003cli\u003e2002-2006 Acura RSX Base\/Type S\u003c\/li\u003e\n  \u003cli\u003e2004-2008 Acura TL Base\/Type S\u003c\/li\u003e\n  \u003cli\u003e2004-2008 Acura TSX\u003c\/li\u003e\n  \u003cli\u003e2003-2007 Honda Accord\u003c\/li\u003e\n  \u003cli\u003e2002-2005 Honda Civic Si\u003c\/li\u003e\n  \u003cli\u003e2006-2011 Honda Civic DX\/EX\/LX\u003c\/li\u003e\n  \u003cli\u003e2006-2011 Honda Civic Si\u003c\/li\u003e\n  \u003cli\u003e2002-2009 Honda CR-V\u003c\/li\u003e\n  \u003cli\u003e2003-2011 Honda Element\u003c\/li\u003e\n  \u003cli\u003e2007-2013 Honda Fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Sold individually - K series engines use 4 spark plugs, order 4 for a complete set. Pre-gapped from the factory but ALWAYS check and adjust gap before installation - factory gap may not match your engine's spec. K series engines typically use 0.044 inch gap for stock applications. DO NOT over-tighten spark plugs or you'll strip the threads in the aluminum head. Torque to 13 ft-lbs or hand-tighten with a spark plug socket until snug, then 1\/16 turn more. These are an upgrade from stock nickel plugs for street cars and mildly modified engines. For turbo builds making 300+ whp or serious track use, consider upgrading to NGK Ruthenium HX plugs instead. Service interval: 60,000-80,000 miles under normal driving, 30,000-50,000 miles for modified engines or track use. If you're experiencing misfires, rough idle, or poor throttle response on old plugs, replacing them with fresh Iridium IX plugs will fix the problem as long as your ignition coils are still good.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n 2007-2009 Acura MDX\u003cdiv\u003e2005-2008 Acura RL\u003c\/div\u003e\n\u003cdiv\u003e2002-2006 Acura RSX Base\/Type S\u003cdiv\u003e2004-2008 Acura TL Base\/Type S\u003cbr\u003e\u003cdiv\u003e2004-2008 Acura TSX\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e2003-2007 Honda Accord\u003c\/div\u003e\n\u003cdiv\u003e2002-2005 Honda Civic Si\u003c\/div\u003e\n\u003cdiv\u003e2006-2011 Honda Civic DX\/EX\/LX\u003c\/div\u003e\n\u003cdiv\u003e2006-2011 Honda Civic Si\u003c\/div\u003e\n\u003cdiv\u003e2002-2009 Honda CR-V\u003c\/div\u003e\n\u003cdiv\u003e2003-2011 Honda Element\u003c\/div\u003e\n\u003cdiv\u003e2007-2013 Honda Fit\u003c\/div\u003e\n\u003c\/div\u003e \n\u003c\/li\u003e\n\n\n\n\n\n\n \n\u003cli id=\"Included\"\u003e\n(4) Spark Plugs\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\u003c\/ul\u003e\n","brand":"NGK","offers":[{"title":"Default Title","offer_id":45321658859554,"sku":"NGK-97138","price":37.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/NGK-97138_40j7.jpg?v=1777661822","url":"https:\/\/www.hybrid-racing.com\/products\/ngk-iridium-spark-plugs-honda-k-series","provider":"Hybrid Racing","version":"1.0","type":"link"}