Thunderbolt IV, I Ignition Sensor For MerCruiser 87-91019A3, 87-892150Q02
For Thunderbolt I and IV ignition sensor kit. Fits all V-6 and V-8 engines with for Thunderbolt IV and V electronic ignition, Approx 1981-1997. For Thunderbolt ignition systems were used on 4.3, 5.0, 5.7, 7.4, 8.2 engines.