Best Spark Plugs For 2013 F150 3.5 Ecoboost

When I first bought my 2013 F150 3.5 Ecoboost, I knew keeping up with its maintenance, especially the ignition system, was crucial for maintaining that turbocharged performance. If your truck is starting to feel sluggish, hesitating under boost, or experiencing noticeable misfires, it’s probably time for new spark plugs. Finding the best spark plugs for 2013 F150 3.5 Ecoboost requires looking past the cheapest options and focusing on quality, proper heat range, and materials like Iridium to handle the extreme pressure and heat generated by the twin-turbo setup.

IMAGE	PRODUCT NAME	AMAZON LINK
	6 pc NGK Iridium IX Spark Plugs compatible with Ford…	View on Amazon
	AULINK Set of 6 UF646 Ignition Coil Pack & SP534…	View on Amazon
	Yoshi Motors DG549 UF646 Ignition Coil Packs & NGK…	View on Amazon
	Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold…	View on Amazon
	Set of 6 Ignition Coil Pack Iridium Spark Plug 3.5…	View on Amazon

6 pc NGK Iridium IX Spark Plugs compatible with Ford F-150 3.5L V6 2011-2019

NGK Iridium IX plugs are often considered the gold standard for high-performance forced induction engines, and the EcoBoost is no exception. These are designed to provide superior ignitability and long service life, resisting the fouling that can plague direct-injected, turbocharged engines. If you’re running a stock or moderately tuned truck and only need the plugs themselves, this set offers genuine NGK quality specifically recommended for the 3.5L V6.

Key features that stand out:
– Genuine NGK Parts: Ensures high-quality manufacturing and reliable performance.
– Iridium Construction: Provides a smaller, more efficient center electrode for a concentrated spark.
– Wide Vehicle Fitment: Compatible with a large range of EcoBoost years (2011-2019).

Pros:
– Exceptional durability and reliability under high boost.
– Excellent resistance to fouling and pre-ignition.
– Direct replacement fitment for easy installation.

Cons:
– These are plugs only; you may need to purchase coil packs separately.

Best for: Owners seeking maximum performance and longevity from the spark plug component alone.

Expert Opinion: NGK Iridium is highly recommended for the EcoBoost platform due to its ability to maintain a strong spark and withstand high cylinder temperatures, which is critical for preventing misfires under heavy acceleration.

AULINK Set of 6 UF646 Ignition Coil Pack & SP534 Spark Plug (3.5L V6 Only) For Ford F150 EcoBoost Flex Taurus Explorer Lincoln MKS MKT 2011 2012 2013 2014 2015 2016 2017

Sometimes, when your F-150 hits that 70,000–100,000 mile mark, it’s not just the plugs that are failing—it’s the coil packs too. This AULINK kit provides a complete ignition overhaul with six ignition coils and six SP534 spark plugs. This is a massive value proposition for a full tune-up, replacing worn-out OEM components that might be causing intermittent misfires or rough idling.

Key features that stand out:
– Complete Kit: Includes both ignition coil packs (UF646) and spark plugs (SP534).
– OEM Part Number Match: Coils match several OEM numbers, ensuring proper fitment and function.
– Strict Quality Control: Manufactured in TS16949 certified facilities, assuring reliability.

Pros:
– Excellent cost-saving measure compared to buying OEM coils and plugs separately.
– Convenient all-in-one replacement solution.
– Backed by a 1-year warranty for peace of mind.

Cons:
– The quality of aftermarket coils can sometimes be inconsistent compared to Motorcraft or major brands.

Best for: The budget-conscious owner needing a full ignition system refresh to eliminate age-related misfires.

Expert Opinion: When replacing spark plugs, inspecting the coils is standard procedure. For older 2013 models, a complete kit like this often makes sense, offering excellent bang for your buck for a comprehensive engine revitalization.

Yoshi Motors DG549 UF646 Ignition Coil Packs & NGK Iridium Spark Plugs Compatible With Ecoboost Ford F150 F-150 Explorer Expedition Navigator 3.5 3.5L V6 2011 2012 2013 2014 2015 2016 2017 Set of 6

The Yoshi Motors kit tries to blend the best of both worlds: the convenience of a full coil/plug kit with the reassurance of using high-quality NGK Iridium plugs. This combination means you get the top-tier plug performance EcoBoost engines demand, paired with reliable replacement coil packs. This is a smart choice for owners who want OEM-level performance without the dealership price tag.

Key features that stand out:
– NGK Iridium Plugs Included: Utilizes a trusted performance plug brand.
– High-Quality Coil Materials: Designed with high electrical resistance and tolerance against heat to prevent common failure points.
– Direct Replacement: Quick and easy fitment designed to match OEM specifications closely.

Pros:
– Combines coil convenience with superior plug material (NGK Iridium).
– Helps avoid damage caused by aging coils and plugs simultaneously.
– Restores performance and drivability effectively.

Cons:
– Priced slightly higher than other generic coil/plug kits due to the NGK inclusion.

Best for: Owners prioritizing reliable plug quality alongside a necessary coil pack replacement.

Expert Opinion: This setup is ideal for the 3.5L EcoBoost. While the coils are aftermarket, pairing them with NGK Iridiums mitigates the risk associated with generic plugs and gives you a much better foundation for reliable turbo operation.

Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set

If you’ve installed a performance tune, upgraded turbos, or frequently tow heavy loads, you need to consider a “colder” spark plug. The Ford Racing Cold Spark Plug Set is explicitly designed for higher-horsepower applications where cylinder temperatures spike dramatically. A colder plug transfers heat away from the tip more quickly, reducing the risk of pre-ignition and catastrophic engine damage under high boost conditions common in modified 2013 F150 3.5 Ecoboost trucks.

Key features that stand out:
– Colder Heat Range: Essential for tuned or heavily modified EcoBoost engines.
– Ford Racing Quality: Engineered by the manufacturer’s performance division.
– Prevents Pre-Ignition: Crucial for maintaining engine safety under high boost pressure.

Pros:
– Necessary component for any Stage 1 or Stage 2 performance tune.
– Highest level of heat resistance among the tested options.
– Trusted name brand for performance applications.

Cons:
– Requires precise gapping specific to your tune and may not be suitable for bone-stock trucks.

Best for: Tuned or heavily worked EcoBoost trucks (e.g., performance modifications, frequent heavy towing).

Expert Opinion: If you plan on pushing the limits of your 3.5L, standard plugs won’t cut it. These Ford Racing plugs are an essential upgrade for maintaining engine integrity when running elevated boost levels. Ensure you gap them according to your tuner’s specifications, which is typically tighter than factory settings.

Set of 6 Ignition Coil Pack Iridium Spark Plug 3.5 EcoBoost V6 Compatible with Ford F150 F-150 Flex Taurus Explorer Lincoln MKS MKT 2011 2012 2013 2014 2015 2016 2017 3.5L Turbo for DG549 SP534

This final selection offers another highly competitive full replacement package for your 2013 F150 3.5 Ecoboost. Featuring Iridium spark plugs and high-voltage ignition coils, this set focuses on reliability and wide compatibility across several Ford and Lincoln models that share the 3.5L V6 engine. The detailed specifications, including the pre-set 0.03-inch gap and Iridium material grade, give you confidence in what you’re installing.

Key features that stand out:
– Iridium Spark Plug Material: Delivers longevity and efficient combustion.
– Comprehensive Reference Numbers: Makes cross-referencing OEM parts simple and accurate.
– 24-Month Warranty: Offers one of the longest warranties in this category.

Pros:
– Excellent two-year warranty is a major selling point.
– Detailed specifications provided for spark plug dimensions and materials.
– Ideal for resolving persistent misfire codes related to both coils and plugs.

Cons:
– Generic branding means long-term coil pack durability is a slight question mark.

Best for: Owners who prioritize a long warranty period on their full tune-up kit.

Expert Opinion: The detailed specifications and generous warranty coverage make this set a solid choice if you need a reliable, inexpensive overhaul without having to source components individually. Just double-check the pre-set gap against Ford’s official recommendation or your preferred setting.

Comparison Short Insights

When choosing the best spark plugs for your 2013 F150 3.5 Ecoboost, you generally have two routes: just replacing the plugs or replacing the entire ignition system (plugs and coils).

If you decide to go with the plugs-only route, the NGK Iridium IX is unmatched for its proven performance and resistance to heat and fouling. This is typically the best option if your current coil packs are less than 50,000 miles old.

For a full tune-up, look at the kits. The Yoshi Motors kit stands out because it combines the necessary replacement coils with the high-quality NGK Iridium plugs. This minimizes the risk of poor spark quality often seen with generic spark plugs included in cheaper kits.

If you are running an aggressive performance tune, you absolutely must install the Ford Racing Cold Spark Plug Set. Standard heat range plugs will increase the chances of detonation under sustained high boost, whereas colder plugs are designed specifically to handle that extra heat. Remember, standard plugs are generally gapped around 0.030 to 0.032 inches, but performance tunes often require a tighter gap like 0.026 to 0.028 inches to prevent spark blowout under high cylinder pressure.

Final Verdict

Choosing the right plugs depends entirely on your usage: stock daily driving, heavy hauling, or performance tuning.

The Reliable Daily Driver Pick:

If your truck is completely stock and just needs renewed spark quality, go with the 6 pc NGK Iridium IX Spark Plugs. They offer excellent OEM or better performance and incredible durability.

The Full Tune-Up Value:

When the mileage is high (over 80k miles) and you need to replace both plugs and coils simultaneously for the best reliability, the Yoshi Motors DG549 UF646 Ignition Coil Packs & NGK Iridium Spark Plugs package provides the highest quality components in a convenient kit.

The Performance Upgrade Necessity:

If your 2013 F150 is running a custom tune (e.g., Stage 1 or Stage 2), the only safe and effective choice is the Ford Racing (M-12405-35T) Cold Spark Plug Set. Don’t risk engine damage by running standard heat range plugs with elevated boost.

Best Spark Plugs For 2013 F150 3.5 Ecoboost: Comprehensive FAQ

What are the main symptoms that my 2013 F150 3.5 Ecoboost needs new spark plugs?

Common symptoms include noticeable engine hesitation, especially under acceleration or when the turbo spools up (often called “spark blowout”), poor fuel economy, rough idling, or the Check Engine Light illuminating with misfire codes (P0300 series). Because the EcoBoost is a turbocharged direct injection (TDI) engine, it’s very sensitive to plug wear.

What is the recommended spark plug replacement interval for the 3.5L EcoBoost?

Ford’s factory recommendation is typically around 100,000 miles. However, due to the high stress of forced induction, most experienced owners recommend replacing spark plugs in the 3.5L EcoBoost closer to 50,000 to 60,000 miles. If you run a custom tune or frequently tow, consider replacing them even sooner, around 30,000 miles.

Should I choose a standard or colder heat range plug for my stock F-150?

For a bone-stock 2013 F150 3.5 Ecoboost, you should stick with a standard heat range plug (like the NGK Iridium IX or OEM equivalent). Colder plugs are designed for modified or tuned engines that produce significantly more heat; running them in a stock truck can sometimes lead to fouling.

What spark plug gap should I use for my 2013 F150?

The factory recommended gap for the OEM Motorcraft SP534 plug is generally 0.030 inches to 0.032 inches. If you are installing an aftermarket cold plug due to performance tuning, you must consult your tuner, as a tighter gap, often around 0.026 inches to 0.028 inches, is necessary to prevent spark blowout under high turbo boost pressure.

Is it necessary to replace the ignition coils when replacing the spark plugs?

It’s not always necessary, but it is highly recommended once your truck reaches higher mileage (over 80,000 miles). Coil packs degrade over time due to heat cycling, and a weak coil pack can lead to misfiring even with brand new spark plugs. Replacing them in a set (as offered in the AULINK or Yoshi Motors kits) provides renewed ignition reliability.

Why are Iridium spark plugs preferred for the EcoBoost over Copper or Platinum?

Iridium offers superior resistance to erosion, heat, and fouling compared to older materials. The 3.5L EcoBoost generates intense heat and combustion pressures, demanding a durable plug material. Iridium allows for a smaller electrode tip, which produces a sharper, more consistent spark crucial for reliable combustion in a turbocharged V6 engine.