SSI MARINE — CDI UNIT / POWER PACK / SWITCH BOX
Replacement ignition module for Mercury & Mariner twin-cylinder 2-stroke outboards (approx. 1997–2006). Reliable, OEM-compatible power pack to restore ignition timing and starting performance.

Key Specifications

Applications: Mercury / Mariner outboards — Twin cylinder, 2-stroke
Approximate Model Years: 1997–2006 (varies by serial/model)
Horsepower Range: 6 HP, 8 HP, 9.9 HP, 10 HP, 15 HP, 20 HP, 25 HP
Connection Types: Some units have bolted wire connections, others use plug connectors — please check your unit before ordering
Condition: New aftermarket replacement (brand new in box / tested)

Replaces / Cross References

Mercury OEM: 855713A3, 855713A4

Compatibility Guidance

This CDI / Power Pack is used on many twin-cylinder Mercury/Mariner 2-stroke outboards produced around 1997–2006. Serial ranges and exact fitment vary by model — always confirm your engine model and serial number prior to purchase.

If you are uncertain, provide your engine model, horsepower and serial number and our technical team will verify fitment for you.

What’s Included

1 x CDI Unit / Power Pack / Switch Box (as described)

Important Notes

Some models use bolted wire terminals instead of plug connectors — check your existing unit and order the matching type.
Visual similarity does not guarantee correct fitment.
It is the buyer’s responsibility to confirm the correct part for their engine prior to purchase. Contact SSI Marine if you need assistance.

Why Buy From SSI Marine

Marine-grade aftermarket parts tested for reliability
UK stock with fast dispatch and tracked delivery
Technical support available to confirm fitment
VAT receipt available on request; credit card payments accepted

Shipping & Dispatch

Orders placed before 1:00 PM (working days) aim for same-day dispatch
Orders after 1:00 PM dispatched next working day
UK stock — tracked shipping

6–25HP Mercury Mariner CDI Unit / Power Pack / Switch Box (2-Stroke Twin Cylinder, c.1997–2006)