Arco IG011 Ignition Coil — Mercury DFI / EFI Outboard, SCI Racing & QC4V Sterndrive
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
OEM-Grade Ignition Coil for Mercury DFI/EFI Outboards and Performance Sterndrives
The Arco IG011 is one of the broadest-coverage Mercury ignition coils in the Arco lineup, spanning Direct Fuel Injection (DFI) and Electronic Fuel Injection (EFI) outboard engines, 4-stroke EFI outboards, SCI Racing sterndrives, QC4V sterndrives, and the 240HP SportJet application. If you’re servicing a performance or fuel-injected Mercury powerplant from the early 2000s through the late 2000s, the IG011 is the coil to check first.
Compatible Applications
- Mercury DFI Outboard 75, 90, 115 Pro XS & 125 HP — 3-Cylinder (2004–2008)
- Mercury DFI Outboard 200, 225 & 250 HP (2008 and newer)
- Mercury DFI Outboard 200 Jet & 200 XS (2008 and newer)
- Mercury EFI Outboard 30 & 40 HP — 3-Cylinder (2002–2008)
- Mercury 4-Stroke EFI Outboard 50 & 60 HP — 4-Cylinder (2002–2008)
- Mercury EFI Outboard 200–250 HP — 6-Cylinder, 3.0L (2002–2004)
- Mercury 240 HP SportJet
- SCI Racing Sterndrive 600, 662, 700, 850, 1025, 1075 & 1200
- Mercury Racing 1100 & 1250 QC4V Sterndrive
Replaces OEM Part Numbers
- Mercury: 339-883778A01, 339-883778A02
- Sierra: 18-5158
- CDI Electronics: 184-0004
Parts Desk Insights
The IG011 is the go-to coil for a wide range of fuel-injected Mercury outboards and performance sterndrives from the 2002–2008 era. Because it covers so many engine families — DFI, EFI, 4-stroke EFI, SCI Racing, and QC4V — the most reliable way to confirm fitment is to cross-reference your engine’s OEM coil part number against the list above. On the outboard side, it’s the first component to inspect when diagnosing a misfiring cylinder, rough idle, or no-spark condition on a fuel-injected Mercury. On the performance sterndrive side, it’s a precision ignition component for SCI and QC4V race applications. For Mercury DFI outboards from 2005 onward in the 110–250HP range, also compare with the Arco IG010 Ignition Coil. For standard (non-DFI) Mercury outboard coil applications, see the Arco IG005 Ignition Coil.
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.