420666142 Ignition Coil for Sea-Doo Spark 3Up HO 900 2015-2020

Ignition Coil for Sea-Doo

This ignition coil for Sea-Doo replaces OEM part 420666142, delivering the spark energy needed to fire the engine on 2015-2020 Spark 3Up HO 900 watercraft.

Overview

This ignition coil for Sea-Doo is a direct-fit replacement for the factory coil on 2015-2020 Spark 3Up HO 900 models. It steps up battery voltage into the high-voltage spark that ignites the air-fuel mixture, keeping the engine running clean through the full rpm range. Riders and mechanics choosing an ignition coil for Sea-Doo value a drop-in part that restores reliable starts and smooth throttle response.

Built For Performance

• Direct replacement for OEM part number 420666142
• Designed for the 900 HO ACE engine ignition system
• Sealed housing resists water spray and engine bay heat
• Stable spark output across the rpm range
• Plug-and-play connector matches the factory harness
• Built to hold up under repeated on-water use

Fits These Machines

• for Sea-Doo Spark 3Up HO 900, 2015-2020

On-The-Job Use

• Restoring spark on a no-start or misfiring Spark
• Routine ignition tune-ups before the riding season
• Replacing a coil damaged by heat or moisture
• Diagnostic swaps to isolate a weak spark issue
• Keeping a spare coil on hand for trailside repairs

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 idle, and loss of top-end power. A spark test or resistance check can confirm a weak or failed coil before you order.

Q: Is this coil a direct fit for the 420666142 part? A: It is built to replace OEM part 420666142 and connects to the factory harness without modification. Confirm your model and year match the Spark 3Up HO 900 listing before purchase.

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