Replacement Inboard Ignition Coil - Compatible with MerCruiser Thunderbolt IV and V

If your boat is struggling to reach full power or starting with difficulty, a faulty ignition coil is likely the culprit. This replacement ignition coil by AA Ignition, manufactured by an original equipment supplier, can be easily installed to restore your boat motor's full performance. The installation process is straightforward and will quickly revive the performance and driveability of your boat.

This ignition coil is compatible with Mercruiser GM V-6 and V-8 petrol engines equipped with Thunderbolt IV and V ignition systems, including the following models: 4.3L V6, 5.0L V8, 5.7L V8 (including 350 MAG), 6.2L V8, 7.4L V8 (including 454 MAG), and 8.2L V8 (including 502 MAG). It replaces a variety of part numbers, including Sierra 18-5438, Mercury 392-805570A2, 392-7803A4, 392-7803, 3000-8M0079202, and 392-805570A1, as well as GLM 72115, PerTronix 40511, Mallory 9-29701, Pro Marine 64570, and Redline RL5438.

It's important to note that this is a compatible replacement part manufactured by AA Ignition, and not a genuine Sierra, Mercury, PerTronix, GLM, Redline, Pro Marine, or Mallory part. However, it is designed to fit and function like the factory-supplied component.

AA Ignition, a division of GWA Auto Parts, is a proud American small business based in sunny South Florida. Founded by long-time car enthusiasts, the company is committed to providing quality products at exceptional value. Their team of ASE-certified technicians is available to assist with installation or diagnosis, and they even provide factory repair manuals to make the process easier for customers.

Strict quality control measures are in place throughout the production process, ensuring the durability and longevity of each ignition coil. Additionally, this product comes with a 2-year or 24,000-mile warranty, so you can have peace of mind knowing that your investment is protected.

In addition to the ignition coil, AA Ignition offers a range of other boat and engine-related products, including a Thunderbolt Distributor Cap Tune Up Kit, Smoke Evap Diagnostic Tool, Master Battery Switch Kit, Dual Battery Isolator Kit, and Macerator Pump. These items are also backed by the company's commitment to quality and customer satisfaction.

With its easy installation, robust construction, and reliable performance, this AA Ignition replacement ignition coil is the perfect solution to revive your boat's power and driveability. Trust the expertise of AA Ignition to keep your vessel running at its best.

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