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8pc Genuine Motorcraft Ignition Coil & Spark Plug Kit (DG511 + SP546) | OEM for Ford 4.6L/5.4L Triton V8 3V
Description
Resolve Ford Triton V8 ignition faults with a factory-matched tune-up kit. Is your Ford Triton V8 fighting rough idle, random misfires, or sinking fuel economy? Non-OEM alternatives and partial component replacements present ongoing reliability risks. This 8pc Genuine OEM Motorcraft DG511 ignition coil and SP546 spark plug kit delivers an immediate, flawless ignition refresh — engineered by Ford to get your truck running smooth and pulling hard again.
Technical Significance
Your ignition system works as a precise ecosystem. Replacing worn coils while leaving old plugs in place (or the reverse) forces the new parts to work twice as hard, causing premature failure and stubborn P0300–P0308 misfire codes. This DG511 + SP546 kit is matched exactly to your truck's factory resistance and heat range. Replacing all 8 coils and plugs together guarantees uniform combustion across every cylinder, protects the catalytic converter, and maximizes engine life. At , only genuine Motorcraft components eliminate the "intermittent misfire events" common with white-box knock-offs on these sensitive 3-valve modular engines.
OEM vs. Aftermarket Comparison
| Feature | Genuine OEM Motorcraft Kit (This Product) | Standard Cheap Aftermarket |
|---|---|---|
| Authenticity | 100% genuine Ford factory parts | Reverse-engineered clones |
| Boot Material | Heavy-duty high-dielectric Motorcraft silicone | Cheap recycled rubber (cracks easily) |
| Internal Coils | Factory-spec insulated copper windings | Low-grade alloy (voltage drops under load) |
| Spark Plug Core | Premium Motorcraft platinum (anti-fouling) | Standard copper or low-spec alloy |
| Reliability | Built to last another 100,000+ miles | High thermal breakdown under towing |
Package Contents
- 8x Genuine Motorcraft DG511 OEM ignition coils (high-dielectric silicone boots, factory-applied dielectric grease)
- 8x Genuine Motorcraft SP546 platinum spark plugs (updated solid-shank design to prevent the infamous breaking issue on removal)
Vehicle Compatibility
A direct factory replacement for Ford, Lincoln, and Mercury vehicles with 4.6L or 5.4L V8 engines (matching DG511, SP546, SP515, 3L3Z12029BA, FD508, UF537):
- 2004–2008 Ford F-150 (5.4L V8 Triton / 4.6L V8)
- 2005–2008 Ford F-250 / F-350 Super Duty (5.4L V8)
- 2005–2008 Ford Expedition (5.4L V8)
- 2005–2008 Lincoln Navigator (5.4L V8)
- 2006–2008 Lincoln Mark LT (5.4L V8)
Interchange / Cross-Reference: DG511, SP546, SP515, 3L3Z12029BA, FD508, UF537.
Please verify your engine uses the straight-boot style coil design (DG511 style) before purchasing for 100% accurate fitment.
Service Indicators
- The "Triton chug" — shaking or jerking when overdrive engages at 45–60 mph
- Flashing check-engine light with codes P0301 through P0308
- Hard cold starts — excessive cranking or sputtering in the morning
- Sudden MPG drop from weak, inconsistent spark
Not sure it fits? Send us your VIN or Engine Serial Number (ESN) and we'll confirm 100% compatibility before you buy. Brand new, factory-sealed, and shipped fast.
Recently viewed
Customer Reviews
4.7 / 5
★★★★★
Based on 3 reviews
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★★★★★ Cured the Triton stumble completely
My 2007 F-150 5.4L had the classic Triton chug — shaking between 40 and 55 mph and a P0305 code. Replaced all 8 coils and plugs with this kit on a Saturday morning. By noon it was running smoother than it ever has. No more misfire codes, fuel economy went from 13 mpg to 16 mpg. Worth every single dollar.
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★★★★★ Do the whole kit — don't cut corners
I tried to save money by only doing 4 coils on my 5.4L Expedition. Misfires came back on cylinder 7 two months later. Finally bit the bullet and did all 8 with this kit. That was 14 months ago and it's been perfect since. Do all 8 at once. This kit makes it easy and affordable.
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★★★★★ Great kit, installation took some patience
Genuine Motorcraft parts, no question. My 2006 Lincoln Mark LT was misfiring on two cylinders. After installing all 8 coils and plugs it runs beautifully. One of the plugs was tricky to thread on cylinder 3 due to tight access, but that's a Ford design issue, not a parts issue. Kit itself is excellent.
Frequently asked questions
How do I know this part fits my vehicle?
Every listing includes a full compatibility list by make, model, year, and engine. If you're unsure, send us your VIN or Engine Serial Number (ESN) via the chat or contact page and we'll confirm fitment before you order.
Are these genuine OEM parts or aftermarket alternatives?
Every product we sell is 100% genuine OEM — factory-sealed and sourced directly from the manufacturer or authorized distributors. We do not sell aftermarket substitutes or white-box alternatives.
Do I need a professional to install these parts?
Most fuel filters and basic maintenance components are straightforward DIY installs with basic hand tools. We recommend consulting your vehicle's service manual for torque specs and bleed procedures. For ignition components and TPMS sensors, a relearn procedure may be required — see the product description for details.