420666142 Ignition Coil for Sea-Doo GTI STD 155 1503 2017

Ignition Coil for Sea-Doo

This ignition coil replaces OEM part 420666142 and delivers the high-voltage spark needed to fire the engine on your personal watercraft.

Overview

This ignition coil for Sea-Doo is a replacement component that transforms battery voltage into the strong spark your engine needs to ignite the air and fuel mixture. Built to match the 420666142 specification, it keeps ignition output steady so your craft starts reliably and runs smooth. It is a solid choice for owners needing to replace a weak or failed coil on a 2017 Sea-Doo GTI STD 155 1503.

Built For Performance

• Cross-references OEM part number 420666142 for a direct fit
• Produces a strong, consistent spark for dependable combustion
• Sealed housing resists moisture, spray, and vibration common on personal watercraft
• Maintains stable ignition output across the full rpm range
• Simple bolt-on replacement for the original coil

Fits These Machines

• for Sea-Doo GTI STD 155 1503, 2017

On-The-Job Use

• Restoring spark on a GTI STD 155 1503 that cranks but will not fire
• Ignition maintenance on 2017 1503 engine models
• Replacing a coil that has weakened with heat and use
• Getting a stored or seasonal craft back on the water

Specs At A Glance

Good To Know

Q: How do I know if my ignition coil needs replacing? A: Common signs include hard starting, misfires, rough running, or a weak spark at the plug. If your GTI STD 155 1503 shows these symptoms, testing the coil is a good first step.

Q: Is this coil a direct replacement for the factory part? A: It is made to match OEM part number 420666142, so it installs in place of the original. Confirm your model and serial number before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.