30HP 40HP Ignition Coil for Mercury Mercruiser 4-Stroke EFI | Replaces 8M0034012, 8M0045124
PRODUCT DETAILS
SSI Marine Replacement Ignition Coil – Mercury / Mercruiser / Quicksilver 4-Stroke EFI
Restore engine performance, smooth idling, and reliable ignition with this high-quality aftermarket ignition coil, built to meet or exceed OEM specifications. Suitable for 30HP & 40HP 3-cylinder 4-stroke EFI Mercury outboards, this coil delivers a strong, consistent spark and long-lasting durability in marine conditions.
✅ Key Features:
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Direct plug-and-play OEM replacement
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Delivers strong, stable ignition spark
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Fully sealed & corrosion-resistant
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Marine-grade build quality
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No modifications required
⚙️ Fits Mercury 4-Stroke EFI Outboards:
30HP EFI (3 Cyl, 4-Stroke)
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Engine range: 1C104334 / 0P560350 and up
(1C109093 ➝ 1C456299) -
Engine range: 1C456300 and up
40HP EFI (3 Cyl, 4-Stroke)
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Engine range: 1C104334 / 0P560350 and up
(1C043417 ➝ 1C456299) -
Engine range: 1C456300 and up
🔁 Replaces OEM Part Numbers:
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8M0034012
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8M0045124
📦 Package Includes:
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1 × Ignition Coil (Direct replacement, OEM style)
⚠️ Buyer Responsibility:
It is the buyer’s responsibility to ensure part number compatibility before ordering.
If you are unsure, please message SSI Marine — our technical team will help confirm fitment for your engine.
💡 Why Choose SSI Marine:
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Reliable OEM-equivalent performance
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Tested for marine use
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UK stock – Tracked 24-hour delivery
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Trusted supplier for marine replacement parts
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Technical support available
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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