It gets better, the installation guides on the rear of the inner boxes are for an M14 (14mm) diameter threaded spark plug, not M10 (10mm) that CR9EIX features! Anyway, I got them for not a lot more than the standard ones so I am happy enough with them. :cheers This nifty little tool only costs a few quid and will help you set the correct gap for your spark plug. However, modern plugs are almost all motorcycle-specific fit and so they come ‘pre-gapped’ and you won’t need to touch them. If you’re running a classic bike, you’ll probably need to set your gap and if your bike’s not running right, a gap tool can help you rule out a potential incorrect gap issue. Thread diameters of 10mm, 12mm, and 14mm are the most common. In fact, when it comes to motorcycles, it's rare to find any other sizes in use. PLEASE NOTE – This article was written a few years ago so not all information provided may be accurate. For example, on some part numbers, NGK now uses Laser Etching instead of stamping, so the font information may not be accurate. Another Sparking Discovery

CR9EIX - Alternative spark plugs - Spark plug cross reference NGK CR9EIX - Alternative spark plugs - Spark plug cross reference

If you need to change your Kawasaki’s spark plugs but you’re not sure of the size or if you want to upgrade your plugs to an iridium version for a longer-lasting plug, this is the guide for you. If the engine is running dangerously lean the whole plug tip will be grey or white. If the temperature is over 850-degrees, pre-ignition may occur. Engine power will be reduced and you risk piston damage. The metal in a spark plug has a single purpose: to channel the electrical energy through the spark plug. Iridium is far harder than copper and this allows the spark plug manufacturers to create a plug with a sharper ‘tip’ which better focuses the spark around the centre electrode without compromising its service life.This is simply one mistake NGK would never make. If you think of how many of these are sold worldwide, you can see where the problem’s heading. The number of damage reports of snapped CR9EIX plugs and damaged engine heads would soar if worldwide customers tightened down M10 spark plugs to M14 specifications. A colossal recall would then pursue as M14 plugs are actually torqued down around twice as much as M10 ones! It’s important to use a torque wrench because under-tightening can cause overheating due to poor heat dissipation and as mentioned, overtightening will cause damage. Fakes are also known to not feature any copper core which means they retain heat and can eventually meltdown, it’s likely to be the same with these fakes. The fakes terminal cap shape is pretty accurate, however cast mold lines are visible, unlike the genuine plug. As stated above, the illustrations on the rear show installation procedures for an M14 threaded spark plug. Unfortunately for Mr Counterfeit, CR9EIX spark plugs have an M10 sized thread! This fatal error has already fulfilled our suspicions that they’re indeed fake, and we haven’t even seen the plugs yet!

CR9EIX NGK Iridium Spark Plug | FREE UK DELIVERY | Flexible

The machined quality of the genuine plug is far superior with a much smoother appearance from base to thread.Install each spark plug by hand until you have wound the thread a couple of turns. This reduces the chances of you cross-threading the plug. If you’re servicing your Aprilia, now’s the chance to upgrade your spark plugs to longer-lasting Iridium ones that will save you money in the long run. I think, don't quote me, but I think the difference between the CR9EIX and the CR9EIA-9 is dual electrodes.

Harley Davidson Spark Plug Cross Reference - Biker Rated Harley Davidson Spark Plug Cross Reference - Biker Rated

NGK is the brand leader in the UK spark plug market and are the world's biggest supplier to many major car manufacturers. Each and every one of their products are designed to meet the most rigorous standards and are the professionals' choice because of their quality and technical excellence. Their plugs can be found in use by teams in F1, WRC and MotoGP. Put simply, NGK genuine spark plugs are the workhorse at the heart of smooth-running engines around the world. Just put iridium plugs in my K5 and it seems to have cleaned up a very slight light burble of a misfire that I had. Guaranteed next working day delivery available for mainland UK. Please allow an extra day for Scottish Highlands. A typical copper spark plug will last around 20,000 miles and most get changed at a major service (usually around 16,000 miles) but an iridium spark plug will be good for around 50,000 miles and you do see people running them to 100,000 miles with no issues. however, if the plug is too hot, the material of the electrode or the ground tab will soften, distort, or even oxidize.A spark plug electrode is litterally at the absolute hottest part of the engine. It is where combustion starts, when compression is the highest it's going to be, and where a lightening bolt (that is a plasma discharge) is purposfully formed. If you’re going to be doing any sort of work on the bike, treat yourself to a decent set of tools. Most of mine are from the Halfords Advanced range (formerly called Professional). The image of the spark plugs above shows four common conditions that you’ll find your spark plugs in. From left to right the plugs are Normal, Rich, Lean and Very Lean. Full descriptions below. Maybe it's time for a little spark plug 101 as it was explained to me by a guy who didn't spout any BS.

CR9EIX (3521) Iridium IX Spark Plugs How to Spot Fake NGK CR9EIX (3521) Iridium IX Spark Plugs

Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments.Copper is generally seen as being the best metal to use in terms of conductivity but iridium plugs are seen as premium as they last longer than standard plugs and can be built with smaller tolerances. Iridium spark plugs also have lower voltage requirements, meaning they perform better when starting and idling and some manufacturers also claim they offer a better throttle response. Fake plugs are known to have air bubbles trapped inside the white ceramic insulator which can affect heat dissipation capability.