Mercury MerCruiser Ignition Coil 8M0044991
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You have 30 days to request a return. All sale items are final sale.
Ensure reliable spark delivery and consistent engine performance with the Mercury MerCruiser Ignition Coil 8M0044991. This genuine Mercury Marine OEM ignition coil is designed to generate the high voltage required to ignite the air-fuel mixture in the engine’s combustion chamber.
The coil converts low battery voltage into the high-energy spark required by the spark plugs. Using an OEM Mercury ignition coil ensures proper ignition timing, consistent spark output, and dependable performance under demanding marine conditions.
Key Features
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Genuine Mercury Marine OEM ignition coil
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Dual-output coil design for reliable spark delivery
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Designed for EFI and modern Mercury ignition systems
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Durable materials tested for marine environments
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Provides consistent spark energy for improved combustion
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Direct replacement for original Mercury ignition components
Part Details
OEM Part Number: 8M0044991
Mercury Reference Number: 300-8M0044991
Product Type: Ignition coil
Application: Engine ignition system
Engine Type: Electronic ignition systems for 4-stroke engines
Typical Packaging: Individual ignition coil assembly
Compatible Mercury & MerCruiser Engines
Used on many modern Mercury outboards and select MerCruiser engines, including:
Mercury Outboards
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40 EFI (4-Stroke) – serial range 0P515897 and newer
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50 EFI (4-Stroke) – serial range 0P515897 and newer
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60 EFI (4-Stroke) – serial range 0P515897 and newer
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75 EFI – serial range 2B095049 and newer
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80 EFI / 80 Jet – serial range 2B095049 and newer
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90 EFI – serial range 2B095049 and newer
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100 EFI / 115 EFI – serial range 2B095049 and newer
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150 FourStroke – serial range 1B905505 and newer
MerCruiser Engines
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4.5L MPI 200
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4.5L MPI 250
These engines are commonly used in a wide range of runabouts, fishing boats, and performance recreational vessels.
Function
The ignition coil converts the 12-volt battery power into high-voltage electrical pulses required by the spark plugs. This spark ignites the fuel-air mixture inside the cylinder, allowing the engine to produce power.
Replacing a failing ignition coil helps:
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Restore proper spark output
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Prevent engine misfires
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Improve starting reliability
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Maintain smooth engine performance
Important Compatibility Note
Ignition coils vary depending on engine model, ignition system design, and serial number range. Always verify compatibility using the engine serial number before ordering to ensure the correct ignition coil.
Cross-Stock / Superseded Part Numbers
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8M0029482 – Earlier Mercury ignition coil replaced by 8M0044991
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300-8M0044991 – Mercury service reference number
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.