Review on Inboard Ignition Coil Replacement for MerCruiser Thunderbolt IV and V Ignition Systems with HEI - Replacing 18-5438, 392-805570A2, 392-7803A4, 392-805570A1, 72115, 40511 by Ronnie Polk
Great quality good quality and low price
It was nice to see that this coil for my Mercruiser 5.7L actually has brass connectors. After problems with bad connections on coils from other manufacturers, namely aluminum or some metal that broke easily when tightened, this coil had stronger brass pins and even came with tightened nuts and compressed lock washers. This told me that this coil had a good chance of getting installed without breaking anything. What is there to lose with a two-year warranty?
- Best in its niche
- I will add later
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