First-class spark plug technology: based on original equipment and engineered to the specific requirements of the engine Plugs easy to replace: factory-pre-set electrode gap, no adjustment necessary; Bosch advices not to lubricate the thread: Requested tightening torque or angle see on package Brand: Bosch. Core material: Precious metal alloy. Top material type: Ceramic. Vehicle service type They are designed for a permanently reliable ignition performance in the respective engine and are developed and produced with the same quality as original equipment spark plugs. Bosch - Spark Plugs Double Iridium - 0242140567 Bosch Double Iridium spark plugs are named after the type of precious metal alloy used for them. Bosch Double Iridium Spark Plug VR7SII33U for Proton Suprima S (Turbo Bosch ZR7S332S - Alternatve spark plugs Important instructions for installation, e., g. the correct tightening torque, can be found on the packaging. Excellent wear resistance: precious metal alloy at center and ground electrode Spark Plug Bosch ZR7SI332S (N48) - s Double Iridiu - Set Of 4 Car Plug High Robustness: special ceramic material with high dielectric and mechanical strength; high gas tightness due to hot shrink assembly
