Some cookies help our partners such as Google, Facebook and TrustPilot track activity on our site, so we can show you ads that are relevant to you. Whilst these spark plugs do have increased service life they are often specified because of their superior ignition qualities. Virtually pure to insure dielectric and physical strength, as well as heat transfer away from the tip for maximum performance.

Our engineering departments work very closely with the engine and vehicle manufacturers to produce the ideal spark plug type for each application. of an engine including physical dimensions; combustion chamber shape; cooling abilities; fuel and ignition systems.

NGK is the brand leader in the UK spark plug market and are the world's biggest supplier to many major car manufacturers. A wide range spark plug is more flexible and performs equally well in a hot or cold engine under stop and go city driving or fast motorway cruising. By producing a high intensity electrical discharge within the engines combustion chamber the spark plug provides the heat energy required to start the air/fuel mixture burning.

A cold spark plug is designed to allow a faster transfer of heat to the cylinder head thus preventing overheating and premature failure. Compared to ordinary plugs with equal anti-fouling resistance; NGK Spark Plugs have a higher pre-ignition rating. If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. NGK Spark Plugs are designed to transfer a high intensity electrical discharge across the spark plug gap producing enough heat energy to ignite the air and fuel mixture. These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site.If the tightening torque is too low, it is possible that the spark plug will lose compression and overheating. However, if you have reason to make a complaint about our service you should contact Youles Motorcycles Ltd, if we are unable to resolve your complaint satisfactorily, you may be entitled to refer the matter to the Financial Ombudsman Service (FOS). This spark plug has resistor that is produced with a glass and carbon mixture, which is fired to ensure superior performance and durability. Copper wire used in place of the iron core in conventional plugs is the secret of NGKs Wide Heat Range. NGK engineers therefore make specific recommendations for each engine and the use to which it is put.