4 New NGK Iridium IX Spark Plugs CR9EIX # 3521 by NGK

Product Information

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. M10 (10 mm) threaded plugs with a gasket show just 10-12nm of torque are needed for aluminium heads. Now compare this to an M14 plug, where we see over double the amount: 25-30nm. Torquing down an M10 plug to 30nm will most definitely cause either distortion to the plug and eventually snap into bits, or the cylinder head thread will strip; not good. Torque the spark plug up to your manufacturer’s recommended settings. If you don’t have a torque wrench, then get the plug hand tight and then add a ½ turn for a plug with a gasket, and more like a ¼ turn for a tapered spark plug. Over-tightening can snap the spark plug – a nightmare.

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

Motorcycle spark plugs usually last around 16,000 miles, or at least this is when most manufacturer service schedules recommend you change them. That's typically once every other major service. However if you use Iridium spark plugs they will last a lot longer, usually well over 30,000 miles. 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.Allows the use of an extremely small diameter electrode (0.6mm) without compromising the spark plugs service life 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.

Spark Plug NGK Iridium CR9EIX vs CR9EIA-9 - Kawasaki ZX-10R Forum Spark Plug NGK Iridium CR9EIX vs CR9EIA-9 - Kawasaki ZX-10R Forum

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. 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. Guaranteed next working day delivery available for mainland UK. Please allow an extra day for Scottish Highlands. NGK Iridium Motorbike Spark Plug CR9EIX9 uses the strong metal iridium which offers improvements in starting, idling & throttle response. Features & Benefits: 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.however, if the plug is too hot, the material of the electrode or the ground tab will soften, distort, or even oxidize. 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. Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines