MerCruiser Thunderbolt IV Ignition Amplifier Box 305 5.0L V8 V822 Stamped Camshaft 7L 200hp 230hp 260hp 305

7L 200hp 230hp 260hp 305 350 120hp

32-89653 Cylinder Head To Exhaust Manifold

Prestolite 8EM2004KB

Medallion - Black Face / Black-Chrome Bezel / Blue-White Text

Pre-1972 Models used a different plug / pin configuration

MerCruiser Thunderbolt IV Ignition Amplifier Box 305 5.0L V8 V822 Stamped Camshaft 7L 200hp 230hp 260hp 305Item Details MerCruiser Thunderbolt IV Breakerless Electronic Timing High Energy Ignition Amplifier Module (V822 Stamp) Good Condition Please Note.. The really the only thing that can happen with these is that THEY ARE WORKING OR THEY ARE NOT. The primary symptom of a bad ignition amplifier is NO SPARK AT ALL. Always make sure you connections are clean & tight while troubleshooting your existing one. Generally Found Mercruiser V8 Models (305 5. 0L)