Edelbrock Ignition Coil #22739 is a universal 12-volt cannister-style coil designed as a high-quality direct bolt-on replacement for OEM ignition coils. This advanced coil has a primary resistance of 1.4 ohms with an output of 42,000 volts. Internally, each Edelbrock Coil features heavy-duty primary and secondary windings for higher energy and greater spark that can help to provide quicker starts with improved idle quality. With a durable oil-filled housing, Edelbrock Coils are resistant to heat, shock and vibration with an effective operating range of 0 to 6,500 RPM.