★★★★★ 5
Durability
Size: 100-Foot, Style: 14-Gauge
Great wire. Works perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
![Regitar USA Ignition Coil f/Mercruiser Engines V6 V8 Engines w/HEI Thunderbolt IV V Ignition [RMF016]](https://cdn.shopify.com/s/files/1/0447/7544/0545/files/107526XL.jpg?v=1769659894 "Regitar USA Ignition Coil f/Mercruiser Engines V6 V8 Engines w/HEI Thunderbolt IV V Ignition [RMF016]")
![Regitar USA Ignition Coil f/Mercruiser Engines V6 V8 Engines w/HEI Thunderbolt IV V Ignition [RMF016]](https://cdn.shopify.com/s/files/1/0447/7544/0545/files/107526BXL.jpg?v=1769659895 "Regitar USA Ignition Coil f/Mercruiser Engines V6 V8 Engines w/HEI Thunderbolt IV V Ignition [RMF016]")
Regitar USA Ignition Coil f/Mercruiser Engines V6 V8 Engines w/HEI Thunderbolt IV V Ignition [RMF016]
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Regitar USA Ignition Coil f/Mercruiser Engines V6 V8 Engines w/HEI Thunderbolt IV V Ignition [RMF016]Ignition Coil for Mercruiser Engines V6 & V8 Engines with HEI Thunderbolt IV & V Ignition Ignition Coil for Mercruiser engines: V 6 and V 8 Engines with HEI Thunderbolt IV and V Ignition. Engine Brand: Mercury Mercruiser Fitment: GM V 6 & V 8 Engines with HEI Thunderbolt IV & V Ignition Brochure (pdf)
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- Fast: 2-3 business days
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Exchange/Return Notes
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4.8 ★★★★★
Based on 1319 reviews
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Product Reviews
★★★★★ 5
Nice quality
Had to return due to our mistake but the mechanic said it was good quality. Ordered the correct size and worked great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2025
★★★★★ 5
Perfect fit
Worked great for a 1965 mercury thunderbolt 150hp
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Reviewed in the United States on June 3, 2025
★★★★★ 5
MerCruiser Replacement Parts
OEM quality MerCruiser Alpha 1 Gen1 replacement part. Everything you need and some things you don't because it's a universal kit that works for several models.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 19, 2025
★★★★★ 5
OEM is always the answer
No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install.
While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.
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Reviewed in the United States on September 9, 2025
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