Feature●Bosch premium spark plug: manufactured in Europe from one of the leading global automotive suppliers●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●Excellent wear resistance: precious metal alloy at center and ground electrodeDescription Bosch 7424/YR7MPP33 Double Platinum Spark Plugs are engineered to extend performance life and durability. The fine wire design of the center electrode improves ignitability and performance in your engine while the Platinum tip on both the center and ground electrodes provide a 3X longer service life than standard Copper plugs. Nickel plated, rolled threads, combined with a factory preset gap, ensure simple, easy installation right out of the box - no anti-seize or gapping necessary.