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

Name: 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
Item: 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
Rating: 5

September 16, 2022

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?

Pros

Best in its niche

Cons

I will add later

New products

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