W4aa Thunderbolt IV Ignition Amplifier Control Module V8 5.0 5.7 7.4 390-7804A3
Tested good has no issues operating properly.
Tested good has no issues operating properly.
Mercruiser Thunderbolt IV ignition control module v6-14 fits 4.3L 4.3 v6. Tested on running engine this fit 4.3L engines but some people use them on 7.4l 454 engines to get a different ignition curve.
Fresh Water, Good Working order. We will work with you to reach a resolution. (International items may take longer).
Came off running engine. Wiring harness complete and In tact.
Fresh Water, Good Working order. We will work with you to reach a resolution. (International items may take longer).
Original new old stock. Ignition control module retrofit kit for thunderbolt V ignition systems.