NGK Spark Plug Set for Sea‑Doo Spark 3‑Plug CR8EB (7784) — Direct‑Fit OEM Equivalent, Restores Ignition

NGK Sea-Doo Spark Plug Set CR8EB (7784) is a three-plug replacement kit designed to restore reliable ignition performance for Sea‑Doo Spark and compatible models.

If your Sea‑Doo Spark’s engine is misfiring, running rough, or you’re due for scheduled maintenance, this OEM-equivalent NGK set offers a direct-fit swap. The kit includes three NGK CR8EB (7784) spark plugs that replace Sea‑Doo part number 415129403 and fit a range of Sea‑Doo Spark and similar models. These plugs are sold as the exact item pictured and are intended for routine replacement to maintain smoother starts and consistent engine response.

Which Sea‑Doo models will these spark plugs fit?

These NGK CR8EB plugs are compatible with Sea‑Doo Spark models and several related editions across recent years. They replace the factory-installed plugs and are intended as direct-fit replacements without modification.

• Sea‑Doo Spark: All models from 2014 through 2021
• GTI 90: Model years 2017–2020
• GTS 90: Model years 2017–2018

How do I know this is the correct part number for my ski?

Confirm fitment by checking the OEM part number or comparing your current spark plugs to the NGK reference. This kit corresponds to Sea‑Doo OEM 415129403 and NGK CR8EB (7784), so matching either number indicates compatibility.

• Compare your existing plug’s stamping or part label
• Verify year and model against the listed fitment range
• Contact a dealer with VIN or serial if uncertain

What performance and maintenance benefits can I expect?

Replacing worn or fouled plugs with fresh NGK CR8EB units helps restore consistent combustion and improves throttle response. While plugs alone don’t change tuning, new ignition components reduce misfires and support smoother idling and starts.

• Restores reliable ignition and cranking behavior
• Reduces rough idle and intermittent misfire symptoms
• Supports regular maintenance intervals and long-term engine health

What does the kit include and are these original NGK parts?

The package contains three NGK CR8EB (7784) spark plugs intended as the exact replacement pictured. They are offered as NGK-manufactured plugs that match the Sea‑Doo OEM reference for straightforward installation.

• Set of 3 NGK CR8EB spark plugs (part number 7784)
• Replaces Sea‑Doo OEM 415129403
• Sold as the pictured item—ready for direct replacement

Who is this for: This NGK three‑plug set is aimed at Sea‑Doo Spark owners, small personal watercraft service shops, and recreational riders performing routine tune-ups. If you maintain a Spark, GTI 90, or GTS 90 within the stated model years and need an OEM-equivalent ignition replacement, this kit supplies the correct plugs for simple, reliable upkeep.