Thunderbolt Ignition→Ignition Wires

Part # & Price	Description
SMI98102 $41.95	Wire Set Spark Plug Marine Mercruiser 7.4 454 Thunderbolt Ignition 84-813720A3 Fits all Mercruiser 454 7.4L big block engines with the Thunderbolt Ignition System. This ignition wire set features 8MM suppression core Packard wire custom fit to your specific application. You can Identify the Thunderbolt ignition system 2 ways. Number one, the riser has an ignition box mounted to it. Number two, the cap has male terminals coming out of the top and the ignition coil is round with a female plug wire connection. Replaces:84-813720A3 Works with this style distributor:
SMI98103 $40.95	Wire Set Spark Plug Ignition Mercruiser 5.0 5.7 6.2 Thunderbolt 84-813720A4 Ignition wire set for Mercruiser 5.0 5.7 6.2 liter engines with the Thunderbolt Ignition System. This ignition wire set features 8MM suppression core Packard wire custom fit to your specific application. Replaces: 84-813720A3 84-813720A4 Works with this style distributor:
SMI98111 $36.95	Wire Set Ignition Spark Plug for Mercruiser V6 4.3L Thunderbolt 84-816761A16 Fits Mercruiser V6 4.3L 262 Cubic Inch Engines with Mercruiser Thunderbolt Ignition. Thunderbolt ignition can be identified by having male studs sticking out of the top of the distributor cap and having a round ignition coil and usually has an ignition box mounted on the port side exhaust riser. If you have a short square coil then you have Delco EST ignition and this is not the correct wire set. Replaces Mercruiser: 84-816761A16