Bosch 0242230561 / HR8DPP30V Double Platinum Spark Plug Petrol Ignition Part Equipped with platinum firing pins at the centre & a ground electrode: Bosch Double-Platinum spark plugs are developed to the same high quality as original equipment & engineered for high performance in gasoline engines. Developed with the same high quality which we supply to original equipment: Outstanding spark plug technology which meets exactly the requirements of the respective engine Fine wire 360&176; continuous laser welded platinum firing pins & a yttrium enhanced tapered platinum ground electrode inlay: For enhanced combustion & service life Ribbed insulator design: Prevents misfires due to flash-over Large copper core center electrode: Enables an enhanced heat transfer Item Specifics: Electrode Material: Double Platinum Short Code: HR8DPP30 V Gap: 1.3 mm Thread: M14 Thread Length: 17.5 mm Hex Size: 16 mm Number of Electrodes: 1OE Numbers: AGSF42FM, CGSF22F