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

Ignition Coil for Sea-Doo GTX STD 155 1503

This ignition coil for Sea-Doo fits GTX STD 155 1503 models from 2017 and carries OEM cross-reference 420666142 for direct replacement.

Overview

This ignition coil for Sea-Doo is a replacement ignition component that steps battery voltage up to the high voltage needed at the spark plug for reliable combustion. Referenced to 420666142, it keeps spark delivery consistent so the 1503 engine in your GTX STD 155 starts easily and pulls smoothly through the powerband. It is aimed at riders replacing a failed coil or refreshing ignition parts during routine service.

Built For Performance

• Direct-fit replacement for OEM reference 420666142
• Heat-resistant construction handles engine bay temperatures
• Sealed body guards windings against moisture and spray
• Consistent spark output for stable idle and acceleration
• Factory-style connectors and mounts for straightforward installation

Fits These Machines

• for Sea-Doo GTX STD 155 1503, 2017

On-The-Job Use

• Bringing back spark on a GTX STD 155 that cranks without firing
• Replacing a coil showing misfire or intermittent cutout
• Pre-season ignition tune-ups on personal watercraft
• Keeping a spare coil aboard for long rides or trips

Specs At A Glance

Good To Know

Q: What symptoms point to a bad ignition coil? A: Hard starting, misfiring, rough running, and power loss under acceleration are typical. A resistance test against factory values will confirm whether replacement is needed.

Q: Is this coil difficult to install? A: No, it uses factory-style connectors and mounting points, so installation is straightforward with basic tools. Always disconnect the battery first and reconnect plug wires in the original order.

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