FASWORX Thunderbolt Ignition Coil compatible with Mercury Marine Mercruiser

The Replacement Ignition Coil for Mercruiser engines with Thunderbolt IV and V Ignition systems offers a reliable solution for maintaining optimal engine performance. Designed specifically to fit Mercruiser engines with Thunderbolt IV and V Ignition systems, it replaces Mercruiser part numbers 392-805570A2 and 392-7803A4 seamlessly. Compatible exclusively with HEI systems, it ensures compatibility and efficient operation, though it does not work with point ignition systems. This ignition coil not only meets but exceeds OEM specifications, guaranteeing reliability and longevity. Additionally, it provides OEM quality at an affordable price point, offering marine enthusiasts a cost-effective alternative without compromising on performance. With consistent and reliable ignition, this replacement coil enhances engine efficiency and extends engine life, making it an invaluable component for maintaining peak performance on the water.