40 HP 45 HP 50 HP 75 HP 80 HP 85 HP 100 HP 115 HP 125 HP Mercury Mariner Outboard CDI Switch Box 332-5772A7
PRODUCT DETAILS
CDI Unit / Switch Box / Power Pack for Mercury & Mariner Outboards
High-quality marine-grade aftermarket CDI switch box / power pack for selected Mercury and Mariner 4-cylinder 2-stroke outboards.
Suitable for selected:
40 HP, 45 HP, 50 HP, 75 HP, 80 HP, 85 HP, 100 HP, 115 HP and 125 HP
Also used on selected Jet applications.
Replacement for the Mercury 332-5772A switch-box family.
Fitment
Selected Mercury / Mariner 4-Cylinder 2-Stroke Models
| HP | Serial Number / Application |
|---|---|
| 40 HP | 0C159200–0G589999 |
| 45–50 HP | 5531630 & Up |
| 75 HP | 6432901 & Up |
| 80 HP | 4831999–6432900 |
| 80 Jet | 0D283222–0G437999 |
| 85 HP | 4366802–4831998 |
| 100 HP | 0B209468–0G437999 |
| 115 HP | 0C100000–0G437999 |
| 125 HP | 0D283222–0G437999 |
Approximate application data also identifies:
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40 HP – 1989–1997
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45 HP – 1981–1989
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50 HP – 1976–1985
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75 HP – 1984–1988
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80 HP – 1978–1983
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85 HP – 1976–1977
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100 HP – 1988–1996
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115 HP – 1989–1997
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125 HP – 1994–1996
⚠️ Year ranges are a guide only. Always check the serial number and original switch-box number.
Replaces Mercury / Mariner Part Numbers
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332-5772
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332-5772A1
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332-5772A2
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332-5772A3
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332-5772A4
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332-5772A5
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332-5772A7
Additional Cross References
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300-03107
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CDI Electronics 114-5772
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Sierra 18-5881
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Sierra 18-5881-1
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Mallory 9-25104
OEM part numbers are used for identification and compatibility reference only.
Product Features
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CDI ignition unit / switch box / power pack
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Mercury / Mariner applications
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4 Cylinder
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2 Stroke
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Selected 40–125 HP applications
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Marine-grade aftermarket replacement
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Replacement for 332-5772A7
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Cross-reference 300-03107
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New
⚠️ Important – Check Compatibility
Please do not order by horsepower or appearance alone.
Mercury / Mariner used different switch boxes depending on engine model and serial number.
Before ordering, check:
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Engine horsepower
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4-cylinder configuration
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Complete serial number
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Original switch-box part number
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Wiring and electrical connections
If the part looks the same as yours, this does not always mean it is the correct CDI for your outboard.
If unsure, send SSI Marine your engine horsepower + complete serial number + picture of the existing CDI and we will help check compatibility.
Buyer Responsibility
It is the buyer's responsibility to confirm compatibility before purchasing.
Correct diagnosis is recommended before replacing electronic ignition components, as stator, trigger, coil, wiring or kill-circuit faults can produce similar symptoms.
Why Buy From SSI Marine?
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Marine-grade aftermarket & OEM-spec parts
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Workshop-tested products
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More than 10 years supplying outboard parts
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Same-day dispatch before 1 PM Monday–Friday
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Royal Mail Tracked 24
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UK stock
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Collection from Leigh, Greater Manchester
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Technical support from experienced outboard specialists
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £6: Royal Mail Tracked 24 Service
- £3.99: Large Letter - Royal Mail 1st Class Post (Untracked)
We offer free delivery on all orders over £150 (excludes outboard engines).
Orders placed before 1:00 PM (Monday-Friday) are usually dispatched the same working day.
Most parcels are delivered within 24 hours, but please allow extra time for courier delays that may occur outside our control.
For outboard engines, please contact us for a delivery quote.
Important: Please ensure your shipping address is correct before completing checkout. SSI Marine is not responsible for parcels sent to an incorrect address provided by the buyer.
Tracking Your Order
Once your order has been dispatched, you will receive a tracking number via email (after 5 PM on the day of dispatch).
Tracking is available only for parcels sent via Royal Mail Tracked 24.
Large Letter orders are sent via Royal Mail 1st Class Post (untracked).
Returns
We accept returns of unused and undamaged items within 30 days of purchase.
Returned items must be in sellable condition and include the original packaging.
Please do not tape, label, or write directly on the product's original box.
Important: Do not return items in their original product boxes only, they must be placed inside a protective outer box or bag. Parcels returned like the example below will be subject to a 20% restocking fee.
Return shipping costs are the customer's responsibility.
Please include your order details and reason for return inside the parcel.
Refunds
Refunds are issued for the item purchase price only (shipping costs are non-refundable).
All refunds will be made using the same payment method as your original order.
Items returned in poor condition or without proper packaging may incur a 20% restocking fee.
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