CDI Unit / Power Pack for Yamaha 2-Stroke Outboards

High-quality marine-grade aftermarket CDI unit, designed to restore correct ignition timing and reliable engine performance on compatible Yamaha 2-stroke outboards.

This CDI (capacitor discharge ignition) unit is a direct-fit replacement for the Yamaha power pack used on selected 9.9HP and 15HP models.

Fitment – Yamaha Outboards

Fits the following 2-stroke Yamaha outboards:

• 9.9 HP
• 13.5 HP – 2003–2004
• 15 HP – 1995–2008

⚠️ Fitment can vary by year and model. Please confirm compatibility before purchase.

Replaces Yamaha OEM Part Numbers

• 63V-85540-00
• 63V-85540-01
• 63V-85540-01-00
• 63V-85540-02-00
• 63V-85540-0200

OEM part numbers used for reference only.

Product Quality

• Marine-grade aftermarket CDI unit
• Designed to OEM specifications
• Fully compatible and interchangeable with original Yamaha units
• Helps restore smooth starting and correct ignition performance

Buyer Responsibility

Please confirm compatibility using your engine model, year, and serial number before ordering.
Even if a part looks the same, it may not be correct for your specific outboard.

If you have any concerns regarding suitability, please contact us before purchase — our technical team will be happy to help.

For general guidance on choosing the correct outboard parts, visit our help page:
https://sssimarine.co.uk/blogs/news/blogs-news-how-to-order-the-correct-outboard-parts

About SSI Marine

All parts are held in UK stock and dispatched from our Leigh (Manchester) workshop.
Collection available Monday–Friday, 9am–5pm.
Orders placed before 1pm are dispatched the same working day.
VAT receipts available on request.

9.9–15HP CDI Unit for Yamaha Outboards – 2-Stroke – Replaces 63V-85540-01