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42423A1 Exhaust Elbow Assembly- Upper (Stamped 42423)
but I'm not sure
Retainer Plate 909387 / 0909387
Shift Shaft Grommet: 25-822408
Mercury 80hp 800 - 4cyl (1970-1972)
MerCruiser Thunderbolt IV Ignition Amplifier Box 305 5.0L V8 V822 Stamped Piston Sets 42423A1 Exhaust Elbow Assembly- UpperItem 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)