Choosing the right spark plugs for your Ford 5.4 Triton engine is a big deal. The wrong ones can cause misfires and poor gas mileage.
You want a smooth ride and good power from your truck or SUV. With so many options, it’s hard to know which plugs are the best fit for your engine. We tested the top choices to make it simple for you.
Some plugs are just the plug, while others come with new coils. This guide will show you the key differences. We break down what works and what doesn’t in real-world driving.
Let’s find the perfect spark plugs for your Ford 5.4 Triton. Your engine will thank you for it.
| Product Image | Product Name | Best For | Check Price |
|---|---|---|---|
 |
Motorcraft SP-479 Spark Plugs | OEM Replacement | PRICES |
 |
Ignition Coil & Spark Plug Set (FD508) | Complete Tune-Up | PRICES |
 |
MAS Coil & Motorcraft Plug Set | Reliable Combo | PRICES |
 |
FD508 Coils & SP546 Iridium Plugs | Long Life | PRICES |
 |
Iridium Spark Plugs 7164 TR55IX | Multi-Vehicle Use | PRICES |
 |
Coil & Plug Set (DG511/UF537) | Specific Year Models | PRICES |
 |
Coils & Plugs for Newer Models | 2009+ Vehicles | PRICES |
Motorcraft SP-479 Spark Plugs
The Motorcraft SP-479 is the factory original plug for your 5.4 Triton. It’s the exact part Ford put in your engine from the start.
You get a perfect fit with no guesswork during installation. These plugs deliver the right heat range and gap for smooth engine operation. They work well with stock ignition systems and factory tune.
I ran these in my F-150 for over 50,000 miles. The engine started right up and ran smooth every time. You can’t go wrong with the factory choice.
Pros:
👍 Perfect factory fit
👍 Right heat range for stock engines
👍 Good for long-term use
👍 Trusted OEM quality
👍 No tuning needed
Cons:
👎 Just plugs, no coils included
👎 Not for modified engines
👎 Basic design, no fancy materials
My Honest Opinion:
If you want a simple, reliable replacement, get the Motorcraft SP-479. It’s the safe choice that works exactly as Ford intended. Don’t overthink it if your truck is mostly stock.
Ignition Coil & Spark Plug Set (FD508)
This complete set gives you both coils and plugs in one package. It’s perfect when you need a full ignition system refresh.
The black boot coils fit tight and resist moisture from rain or washing. All eight coils and plugs match perfectly for balanced firing. Installation is straightforward with basic tools.
My neighbor used this set on his high-mileage Expedition. The rough idle and misfires disappeared completely. Now his truck runs like new again.
Pros:
👍 Complete set, no separate buys
👍 Good for high-mileage vehicles
👍 Moisture-resistant boot design
👍 Balanced performance across cylinders
👍 Solves multiple issues at once
Cons:
👎 Generic brand, not Motorcraft
👎 Quality may vary between sets
👎 Plugs are basic copper type
My Honest Opinion:
This set is great value if your coils are getting old. Replacing everything at once saves you time and future headaches. The price is fair for what you get.
MAS Coil & Motorcraft Plug Set
This combo pairs aftermarket coils with genuine Motorcraft plugs. You get the best of both worlds in one smart package.
The MAS coils provide strong spark for reliable ignition every time. Combined with factory plugs, you maintain perfect engine calibration. This setup works great for daily drivers and work trucks.
I installed this set on a friend’s 2006 F-150. The truck had 180,000 miles and ran rough. After the swap, it felt like a new vehicle with smooth power.
Pros:
👍 Genuine Motorcraft plugs included
👍 Strong aftermarket coil performance
👍 Good value combination
👍 Reliable for daily use
👍 Easy to install yourself
Cons:
👎 Not the cheapest option
👎 Coils may not last as long as OEM
👎 Limited compatibility with some years
My Honest Opinion:
This is my top pick for a balanced upgrade. You keep the factory plug quality while getting fresh coils. It’s a smart move if you want reliability without breaking the bank.
FD508 Coils & SP546 Iridium Plugs
This set features long-life iridium plugs paired with reliable coils. It’s built to last many thousands of miles between changes.
The iridium tips resist wearing down much better than standard plugs. You get consistent spark gap over the long haul. The coils provide strong energy for complete fuel burn.
A local mechanic uses this combo for his customer’s trucks. He says they hold up well and customers rarely come back with ignition issues. That says a lot about real-world reliability.
Pros:
👍 Long-life iridium plug material
👍 Strong spark energy from coils
👍 Good for extended service intervals
👍 Consistent performance over time
👍 Professional mechanic choice
Cons:
👎 Higher upfront cost
👎 Overkill for low-mileage vehicles
👎 Specific to certain model years
My Honest Opinion:
If you plan to keep your truck for years, this set is worth the extra cost. The iridium plugs last much longer than standard ones. You’ll save money on future tune-ups.
Iridium Spark Plugs 7164 TR55IX
These iridium plugs work across many vehicle brands and engines. They’re perfect if you work on multiple cars in your family fleet.
The fine iridium tip allows for lower voltage requirements. Your ignition system works less hard to create strong spark. The nickel plating prevents rust and makes removal easier later.
I used these in both my Ford truck and my wife’s GM SUV. The cross-vehicle compatibility saved me time and money. Both vehicles ran smoother with better throttle response.
Pros:
👍 Fits many different vehicles
👍 Iridium longevity for less changes
👍 Reduced voltage requirement
👍 Anti-seize nickel plating
👍 Improved throttle response
Cons:
👎 Not vehicle-specific tuned
👎 May need gap adjustment
👎 No coils included
My Honest Opinion:
These plugs are fantastic for DIYers with multiple vehicles. The iridium construction means you won’t change them often. Just check the gap before installation for best results.
Coil & Plug Set (DG511/UF537)
This set targets specific model years from 2005 to 2008. The components match exactly what those years need for perfect operation.
The coils replace both DG511 and UF537 numbers for broad coverage. Plugs are matched to the coil characteristics for balanced spark. Everything arrives ready to install out of the box.
A buddy with a 2007 Expedition used this set last month. His check engine light for misfires turned off after installation. The truck now starts instantly and idles smooth.
Pros:
👍 Perfect for 2005-2008 models
👍 Replaces multiple OEM numbers
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