Mercury OEM Ignition Coil 806673T1 | Marine Outboard Ignition
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Mercury OEM Ignition Coil 806673T1 — Marine Outboard Ignition
Restore reliable ignition performance with this OEM Mercury ignition coil. The ignition coil is a critical component of the outboard’s ignition system — it transforms battery voltage into the high-voltage spark required to fire the spark plugs at precisely the right moment. A failing coil causes misfires, hard starting, rough running, and power loss under load.
Part number 806673T1 is a genuine Mercury OEM replacement coil, ensuring correct output voltage, timing compatibility, and service life for compatible Mercury outboard engines. Using an OEM coil eliminates the fitment and performance uncertainty that can come with aftermarket substitutes on high-performance marine ignition systems.
Key Features
- Part number: 806673T1
- Genuine Mercury OEM ignition coil
- Delivers correct high-voltage output for reliable spark at all RPM ranges
- Direct OEM fit — no modification required
- Restores ignition performance on engines with misfires, hard starting, or rough running
Best Use Case
Best suited for replacing a failed or degraded ignition coil on compatible Mercury outboard engines. Symptoms of a failing coil include intermittent misfires, hard starting (especially when warm), rough idle, hesitation under acceleration, and cylinder-specific power loss. Always diagnose which coil is failing before ordering — on multi-coil engines, test each coil individually. Confirm engine model, year, and serial number against the Mercury parts catalog before ordering to ensure 806673T1 is the correct coil for your application.
Parts Desk Insights
Ignition coils are a high-value diagnostic part — customers replacing one are often doing so after a misfire diagnosis, which means they may also need spark plugs and a full ignition service. Always ask whether they’ve checked the spark plugs and plug wires at the same time. For customers with a Mercury engine needing other ignition or electrical components, cross-sell the Mercury Ignition Coil 811639T (alternate coil), the Mercury Stator 878143T05, and the Mercury Alternator 817119A4. For aftermarket ignition components, the Sierra Marine Distributor Cap 18-5362 is worth mentioning for applicable engine types.
Related Ignition & Electrical Parts
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.