Bosch Spark Plugs, engineered for high performance and long life Built to OE (original equipment) specifications and incorporating the latest innovations and technology demanded by the world's leading automotive manufacturers, the Bosch spark plug range caters to an extensive list of engines and vehicles. Whether scaling mountains in your 4WD or clocking up the kilometres in your daily driver you can be assured that Bosch spark plugs will give you the reliability and longer service life you demand. Using a variety of precious metals in their construction enables increased spark plug life coupled with maximised fuel burn to give you greater economy which in turn saves you money. From the origins of some of the first automobiles built prior to 1900, Bosch have forever been at the forefront of automotive equipment and have grown to become one of the world's largest manufacturers of automotive parts. Their products and technology are found in virtually every car make across the globe, and this continual research and development enables not just industry leading spark plugs but a comprehensive range of distributors and parts, master cylinders as well as alternators to name just a few. When it comes to fitting replacement parts insist on Bosch quality to give you the peace of mind that comes from original equipment. How to change spark plugs when upgrading to Bosch: Confirm with manufacturers specifications on the thread reach of the spark plug Clean surface around gasket seat / spark plug hole to remove any dirt Insert spark plug and tighten until finger tight and the gasket touches the cylinder head Use a Spark Plug Wrench or correct spark plug socket to then tighten a further half to two-thirds of a turn to fully seat your Bosch spark plug (Conical seat plugs require a further 1/16th turn) Use our online rego search tool to find the right Bosch Spark plug for your vehicle and simply purchase online or come into a store using our click and collect service.