Crane's canister-style, oil-filled performance coils are for both performance and universal replacement applications. They give improved starting, better throttle response, and more high end power. Tested to conform to SAE J973a test procedure. Oil-filled for maximum internal winding, cooling and high reliability. The windings are optimized with computer aided design for maximum spark plug gap current and high available voltage. Alkyd coil towers eliminate failure from flash over and carbon tracking. 50-State legal.