Switch Box CDI Power Pack 339-7452A15 for Mercury 6-35 HP Outboard 18-5777
Switch Box CDI Power Pack 339-7452A15 for Mercury 6-35 HP Outboard 18-5777
Product Overview
CDI switch box and power pack for Mercury outboard engines from 6 to 35 HP, replacing 339-7452A15, 339-7452A19 and the wider 339-7452A series, plus Sierra 18-5777, CDI 114-7452K1 and Mallory 9-25102 / 9-25103. It fits 6, 8, 9.9, 10, 15, 20, 25 and 35 HP two-cylinder two-stroke models from 1980-1997 using the bullet connection pack, and 6-25 HP models from 1999 and newer. A failing switch box shows up as no spark on one or both cylinders, a motor that cuts out when hot or a rev limit that drops suddenly. Replace the unit when spark is weak or intermittent after the stator and trigger have been checked.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | CDI Switch Box / Power Pack |
| Engine | Mercury 2-cylinder 2-stroke |
| Horsepower | 6, 8, 9.9, 10, 15, 20, 25, 35 HP |
| Years | 1980-1997; 1999 and newer for 6-25 HP |
| Connection | Bullet connector pack |
| Quantity | 1 CDI unit |
| Packaging Size | 12.5 x 10 x 5 cm (4.9 x 3.9 x 2.0 in) |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Mercury | 339-7452A1, A2, A3, A7, A8, A9, A10, A11, A13, A14, A15, A16, A18, A19, A20, A21 |
| Sierra | 18-5777 |
| CDI | 114-7452K1 |
| Mallory | 9-25102, 9-25103 |
Compatible Engines
| Brand | Horsepower | Years |
|---|---|---|
| Mercury | 6 HP, 8 HP, 9.9 HP, 10 HP | 1980-1997 |
| Mercury | 15 HP, 20 HP, 25 HP, 35 HP | 1980-1997 |
| Mercury | 6-25 HP two-cylinder | 1999 and newer |
What's Included
| Component | Qty |
|---|---|
| CDI Switch Box / Power Pack | 1 |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Confirm your outboard is the two-cylinder model with a bullet connector pack
- Check the stator and trigger before replacing the switch box
- Record the wire colours before disconnecting the original unit
- Check for spark on both cylinders after fitting
- 30-Day Easy Returns
- Free Worldwide Shipping
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Boat Owners' Review
Before You Buy
Frequently Asked Questions
What is your refund policy?
We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.
See our full Refund Policy for complete details.
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