Motorcraft DG-511 Ignition Coil 8-Pack — Why Replace All 8 at Once on Your Ford 4.6L, 5.4L & 6.8L Engine
If you've got a misfire code on your 2004–2008 Ford F-150, F-250, F-350, Expedition, or Mustang and you've already identified the bad DG-511 coil, you're probably asking: should I replace just the one failed coil, or all 8 at once? In this guide we'll answer that question honestly, explain what makes the DG-511 different from the DG-508, and show you how to do the full 8-coil replacement yourself.
DG-511 vs DG-508 — which one does your engine need?
This is the most common source of confusion when ordering ignition coils for Ford V8 engines. Both are Motorcraft coil-on-plug coils, but they are NOT interchangeable:
DG-508 — fits the 1997–2004 Ford 4.6L 2-valve and 5.4L 2-valve engines
DG-511 — fits the 2004–2008 Ford 4.6L and 5.4L 3-valve engines, plus the 6.8L V10
The key difference is the engine generation. If your truck or SUV is a 2004–2008 model with a 3-valve V8 or V10, the DG-511 is your coil. Always verify with your VIN before ordering.
Why replace all 8 DG-511 coils at once?
When one ignition coil fails, it's tempting to replace just that one and move on. Here's why that's rarely the right call on a high-mileage Ford engine:
All 8 coils have the same age and mileage — if one has failed, the others are close behind
A single failed coil puts extra ignition load on the remaining coils, accelerating their failure
Replacing one coil now and coming back to replace 7 more individually costs far more in total labor time
Replacing all 8 at once guarantees balanced ignition performance across every cylinder
You save $241 vs buying 8 singles at AutoZone
Ford dealership technicians and experienced Ford mechanics almost always recommend replacing all 8 coils at once on engines over 80,000 miles. It's one of those jobs where doing it right the first time saves you money in the long run.
Key features of the Motorcraft DG-511
Genuine Motorcraft Part No: DG-511 (OEM: 3L3E-12A366-CA)
Coil-on-plug design — direct fit, no wires or adapters needed
Black coil boots — factory correct appearance
Steel lamination stack for consistent magnetic field and reliable spark output
Motorcraft 2-year / unlimited mile warranty — valid at any Ford or Lincoln dealer
Fits over 512 Ford, Lincoln and Mercury vehicles
Vehicle compatibility — complete 8-coil set
2004–2008 Ford F-150 4.6L & 5.4L V8
2005–2008 Ford F-250/F-350 Super Duty 5.4L V8 & 6.8L V10
2005–2008 Ford Expedition 5.4L V8
2005–2008 Ford Mustang 4.6L V8
2006–2008 Ford Explorer 4.6L V8
2006–2008 Lincoln Mark LT 5.4L V8
2005–2008 Lincoln Navigator 5.4L V8
2006–2008 Mercury Mountaineer 4.6L V8
1999–2007 Ford F-550 Super Duty 6.8L V10
Cross references: 3L3E-12A366-CA, 3L3Z-12029-BA, DG508, FD-508, UF405
How to replace all 8 DG-511 coils — step by step
Disconnect the negative battery terminal before starting
Remove the engine cover if your vehicle has one
Working one cylinder at a time, unplug the electrical connector from the coil
Remove the coil retaining bolt (7mm or 8mm)
Pull the old coil straight up off the spark plug
Push the new DG-511 firmly down onto the spark plug until it seats fully
Reinstall the bolt and reconnect the electrical connector
Repeat for all 8 cylinders
Reconnect the battery, clear any misfire codes, and test drive
Total time: 1.5–3 hours depending on your engine and experience. The rearmost cylinders on each bank are the tightest — use extensions and a swivel joint to make them easier.
💡 Pro tip: While you have the coils out, replace the spark plugs too for a complete tune-up. Use Motorcraft SP-479 plugs for the 5.4L 3-valve engine.
🎥 Every order from SayParts includes a FREE step-by-step installation video covering the complete 8-coil DG-511 replacement on your Ford engine.
Why buy from SayParts?
- 8 x Genuine Motorcraft DG-511 coils with 2-year / unlimited mile Ford warranty
- Free installation video covering all 8 coils
- Free worldwide shipping
- Save $241 vs buying 8 singles at AutoZone
- VIN verification — not sure if this fits? Contact us before ordering
Don't do the job twice. Replace all 8 Motorcraft DG-511 ignition coils at once and restore full performance to your Ford 4.6L, 5.4L, or 6.8L engine.
👉 Order the Motorcraft DG-511 8-Pack at SayParts: https://sayparts.com/products/motorcraft-dg-511-ignition-coil-8-pack-ford-4-6l-5-4l-6-8l-2004-2008
👉 Need just 1 coil? Order single DG-511 here: https://sayparts.com/products/motorcraft-dg-511-ignition-coil-ford-4-6l-5-4l-6-8l-2004-2008
Fits 2004–2008 Ford F-150, F-250, F-350, Expedition, Mustang, Explorer, Lincoln Navigator & Mercury Mountaineer with 4.6L or 5.4L V8, or 6.8L V10. Verify fitment with VIN before ordering.