🚗 Ignite Your Drive with Confidence! Screw-in or bolt-on installation makes upgrading a breeze. Engineered to seamlessly integrate with your vehicle's system for optimal performance. Service intervals of 60,000 to 100,000 miles keep you on the road longer. Designed to meet high electromagnetic capacity requirements for superior ignition. Crafted for longevity, ensuring your engine runs smoothly for miles. 60k-100k miles Durable performance OE technology The AD Auto Parts Set of 4 Ignition Coils and 4 OEM SP541A Double Platinum Spark Plugs is designed for Ford and Mazda vehicles, ensuring OE quality and performance. With easy installation and a service life of up to 100,000 miles, this set is the perfect upgrade for maintaining your engine's peak performance.