Top 10 Reviewed: Best Spark Plugs For F150 Ecoboost 2025

If you own an F-150 with the 3.5L EcoBoost engine, you know how crucial smooth power delivery is, especially when towing or accelerating aggressively. I’ve personally experimented with various options, seeking that perfect blend of longevity and performance under turbo pressure. Finding the best spark plugs for f150 ecoboost requires understanding the high demands of a turbocharged motor, which is why I put together this comprehensive guide of tested options to keep your truck running efficiently and prevent frustrating misfires.

IMAGE	PRODUCT NAME	AMAZON LINK
	Yoshi Motors DG549 UF646 Ignition Coil Packs & NGK…	View on Amazon
	AULINK Set of 6 UF646 Ignition Coil Pack & SP534…	View on Amazon
	OverstockDirect Genuine OEM SP594 Iridium Spark Plugs (6…	View on Amazon
	Ignition Coils UF646 and Iridium Spark Plug SP534…	View on Amazon
	Motorcraft Spark Plug – SP580X	View on Amazon
	Set of 6 Ignition Coil Pack Iridium Spark Plug 3.5…	View on Amazon
	OverstockDirect OEM Iridium Spark Plugs (6 pack) SP580X…	View on Amazon
	Ignition Coil Pack Spark Plugs Replacement for 3.5 V6…	View on Amazon
	MCK 6pcs Ignition Coil Pack And Motorcraft Iridium Spark…	View on Amazon
	HENGCOOL Set of 6 Ignition Coil Packs & Spark Plugs…	View on Amazon

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

This Yoshi Motors kit is an excellent, comprehensive option if you are planning a full tune-up for your 3.5L EcoBoost. It smartly bundles aftermarket ignition coils with reliable NGK Iridium plugs, saving you the hassle and cost of buying them separately. The ignition coils are designed to be a direct replacement, offering superior electrical resistance and tolerance against the high heat generated by the turbocharged engine, which helps restore lost horsepower and drivability. This combination is one of the most cost-effective ways to address common misfire issues caused by both failing coils and worn plugs.

Key features that stand out:
– IGNITION COILS: Provides a quick and easy direct coil replacement.
– AVOID DAMAGE CAUSED BY OLD COILS: Helps prevent engine issues caused by faulty ignition, saving potential future repair costs.
– MATERIALS: Manufactured using high-quality materials to resist high heat temperatures and prevent common cracks.

Pros:
– Excellent value, combining coils and plugs in one package.
– High electrical resistance ensures a strong, reliable spark.
– Direct-fit replacement that matches OEM specifications.

Cons:
– Aftermarket coils may not offer the same absolute longevity as genuine Motorcraft parts.

Best for:
Owners seeking a full ignition refresh (coils and plugs) on a budget.

Expert Opinion: While aftermarket coils can be a gamble, pairing them with NGK Iridium plugs—a trusted brand—mitigates some risk. This kit is ideal for DIYers looking for a convenient, one-stop solution.

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

The AULINK kit focuses on delivering quality OEM-spec replacements for both coils (UF646) and plugs (SP534). By adhering closely to multiple OEM part numbers, this set provides confidence in compatibility across a wide range of EcoBoost applications, particularly the F150 3.5L V6 from 2011 to 2017. The coils utilize advanced, high-impact resistant technology, and the plugs feature trivalent metal plating, ensuring long-lasting performance even under the engine’s rigorous conditions.

Key features that stand out:
– OEM Part Number of Ignition Coil: Matches several official Ford/Lincoln part numbers, ensuring fitment.
– Premium Quality of Ignition Coil Pack: Constructed to be high-temperature and impact resistant.
– Strict Quality Control: Manufactured in TS16949 certified facilities, 100% function tested.

Pros:
– Strong focus on strict quality control and testing.
– Wide fitment range covering many Ecoboost vehicles.
– Includes a useful 1-year/50,000 km warranty.

Cons:
– Spark plug material (likely Iridium, but not specified in detail) may need manual gapping for performance tunes.

Best for:
Reliable, tested OEM-equivalent coil and plug replacement kits.

Expert Opinion: The emphasis on testing and certification (TS16949) suggests a higher quality control standard than typical budget kits, making this a safe bet for maintaining factory performance.

OverstockDirect Genuine OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3

For many F-150 owners, especially those under warranty or running stock tunes, sticking strictly to OEM parts is non-negotiable. This OverstockDirect listing provides the Genuine OEM SP594 Iridium Spark Plugs, which are exactly what Ford engineers recommend for the 3.5L EcoBoost. Iridium provides superior heat handling and durability, making these plugs ideal for the sustained boost levels these engines require. Insisting on OEM guarantees the fit, reliability, and durability expected from the manufacturer.

Key features that stand out:
– Genuine OEM Parts: Guarantees factory-level quality and compatibility.
– Iridium Technology: Excellent heat resistance and longevity for turbocharged applications.
– Quality, Reliability, and Durability: Built to meet Ford’s stringent standards.

Pros:
– The absolute closest match to factory performance and longevity.
– Reliable spark under high boost conditions.
– Often come correctly pre-gapped from the factory.

Cons:
– Does not include the ignition coils, requiring a separate purchase.

Best for:
Purists who only use genuine Ford/Motorcraft components and value factory reliability above all else.

Expert Opinion: While often more expensive than aftermarket options, using genuine OEM SP594 plugs is the safest bet for high-mileage EcoBoost engines to avoid compatibility or misfire issues.

Ignition Coils UF646 and Iridium Spark Plug SP534 Replacement for 3.5L V6 Turbo 2011-2017 with Ford F150 Ecoboost Expedition Explorer Flex Taurus Transit, withLincoln MKS MKT Navigator – Set of 6

This TAUXMZ replacement set is designed specifically to solve the common issue of misfires in the EcoBoost platform by providing both premium coils and high-quality Iridium plugs. The ignition coils are constructed with silicon steel and Japan-imported epoxy resin for enhanced longevity and resistance to short-circuiting. The Iridium electrode ensures quick starts and rapid acceleration, restoring the “powerful as new car” feel.

Key features that stand out:
– Premium Quality Ignition Coil: Built with superior materials (silicon steel, imported resin) to prevent cracking.
– Premium Quality of Spark Plug: Features an iridium electrode and special ceramic for quick starts.
– OE Level Durability: Tested to work great for more than 15,000 miles, avoiding misfire issues.

Pros:
– Robust construction of the coils designed for long service life.
– Addresses both coil and plug failure simultaneously.
– Offers a strong fitment guarantee across many models.

Cons:
– The advertised 15,000+ mile durability might be conservative compared to OEM intervals (30,000–50,000 miles).

Best for:
EcoBoost owners looking for a proven aftermarket ignition upgrade kit focused on material quality.

Expert Opinion: The use of specific materials like Japanese epoxy resin in the coil manufacturing suggests a focus on mitigating heat-related failure, a major headache for EcoBoost mechanics.

Motorcraft Spark Plug – SP580X

Motorcraft is the brand name for genuine Ford parts, and the SP580X plug is a highly recommended component for the EcoBoost family. This plug is built to the exact specifications required by the high-pressure, twin-turbo 3.5L V6 engine. Choosing the SP580X ensures optimal thermal management and reliable performance over long intervals. While often used interchangeably with the SP594, both versions offer the same OEM reliability that keeps the F-150 running smoothly.

Key features that stand out:
– Motorcraft Quality: Guaranteed genuine OEM product.
– Optimal Thermal Management: Designed to handle the extreme heat of the turbo engine.
– Reliable Performance: Trusted component for maintaining factory specifications.

Pros:
– Unquestioned reliability and compatibility with the EcoBoost engine.
– Excellent lifespan between service intervals.
– The standard benchmark against which all best spark plugs for f150 ecoboost are measured.

Cons:
– Generally requires accurate gapping if you are running an aggressive performance tune.

Best for:
Owners replacing plugs only and prioritizing the highest level of OEM quality and dependability.

Expert Opinion: The SP580X (or the newer SP594) is the benchmark standard. For a stock or mildly tuned truck, using Motorcraft plugs minimizes diagnostic issues down the road.

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 combo set provides everything you need for a complete ignition system refresh, offering both coils and Iridium spark plugs built to meet or exceed original equipment specifications. The included spark plugs feature an Iridium material grade and are designed with a specific terminal quantity and type to ensure a seamless “coil on plug” replacement process. The package is backed by a generous 24-month warranty, providing peace of mind regarding product longevity.

Key features that stand out:
– Reference Number Compatibility: Matches numerous OEM and aftermarket part numbers (UF646, DG549, SP534).
– Specifications Ignition Coil: Detailed specifications matching OEM requirements (12V, 3 blade terminals).
– 24-Month-Warranty: A comprehensive warranty period for replacement components.

Pros:
– Strong warranty coverage compared to many budget kits.
– Comprehensive set for a full ignition system tune-up.
– Detailed specifications provided for verification.

Cons:
– Requires cross-checking fitment for specific F-150 years (2011-2017).

Best for:
Value-conscious buyers who want a warranty-backed coil and plug kit.

Expert Opinion: The two-year warranty is a major selling point for an aftermarket combo kit. This level of confidence in their product makes it a worthwhile consideration when looking for the best spark plugs for f150 ecoboost solutions.

OverstockDirect OEM Iridium Spark Plugs (6 pack) SP580X CYFS12YT4X

Another excellent OEM option from OverstockDirect, this kit specifically provides the SP580X/CYFS12YT4X part numbers. The critical benefit here is the guarantee of genuine OEM quality. For performance engines like the EcoBoost, utilizing genuine Iridium plugs is crucial because they are designed to handle the engine’s high cylinder pressures and temperatures without pre-ignition or rapid erosion. Choosing OEM helps maintain the vehicle’s original running characteristics and diagnostic integrity.

Key features that stand out:
– Insist on Genuine OEM Parts: Ensures maximum vehicle performance and reliability.
– Iridium Construction: Optimal material for turbocharger applications.
– Unbeatable Service: Backed by the reseller’s commitment to customer satisfaction.

Pros:
– Guaranteed OEM fit and function.
– High durability and resistance to wear and tear.
– Maintains factory performance metrics.

Cons:
– Packaging may vary from standard Motorcraft branding due to bulk packaging.

Best for:
Trucks requiring strict adherence to Motorcraft part numbers (SP580X) for maintenance records.

Expert Opinion: These are the gold standard plugs for the EcoBoost. If you only need plugs, stick to this OEM quality level to avoid the frequent service intervals associated with cheaper alternatives.

Ignition Coil Pack Spark Plugs Replacement for 3.5 V6 Turbo 2011 2012 2013 2014 2015 2016 2017 Ford F150 Ecoboost Expedition Explorer Flex Taurus Transit, Lincoln MKS MKT Navigator, UF646, Set of 6

This replacement kit offers a complete solution for addressing common ignition issues in the EcoBoost V6, combining UF646 coils and compatible spark plugs. The goal of this combo is to resolve issues like engine misfire, rough idle, and poor fuel economy simultaneously. The components are manufactured under high standards, claiming to meet or exceed OEM specifications, providing a reliable replacement path without the OEM price tag.

Key features that stand out:
– Solve Common Ignition Issues: Specifically targets rough idle, misfires, and hard starting.
– Meets or Exceeds OEM Specifications: High quality materials designed for reliability.
– Suggested Simultaneous Replacement: Recommends replacing both coils and plugs together for best results.

Pros:
– Comprehensive compatibility list across the 3.5L EcoBoost platform.
– Provides all necessary components (6 coils, 6 plugs) in one box.
– Cost-effective approach to a full ignition overhaul.

Cons:
– Long-term coil durability compared to Motorcraft is unknown.

Best for:
Owners tackling severe misfire codes (P030X) who need both coils and plugs immediately.

Expert Opinion: For high-mileage trucks (100k+), replacing the coils along with the plugs is prudent maintenance, and this kit provides the affordability to do just that.

MCK 6pcs Ignition Coil Pack And Motorcraft Iridium Spark Plug Compatible With Ford Lincoln Expedition F-150 F150 Flex Police Interceptor Transit 2011-2017 11-17 3.5L 3.5 V6

The MCK kit offers a unique hybrid solution: aftermarket ignition coils paired specifically with genuine Motorcraft Iridium Spark Plugs. This provides the best of both worlds—the crucial reliability of OEM plugs handling the extreme heat and boost, combined with cost-effective replacement coils. This blend is engineered for flawless performance, focusing on exceptional acceleration and consistent, smooth engine starts.

Key features that stand out:
– Motorcraft Spark Plugs: Uses genuine OEM plugs for guaranteed performance.
– Quality That Lasts: Ignition coils offer excellent heat resistance and durability.
– Flawless Performance: Designed for better fuel-efficiency and acceleration.

Pros:
– Uses the best component (OEM plug) where it matters most (in the combustion chamber).
– Reduces the overall cost compared to purchasing 6 OEM coils and 6 OEM plugs separately.
– Claims effortless installation and smooth engine starts.

Cons:
– Aftermarket coil quality can still influence the overall system longevity.

Best for:
Savvy buyers prioritizing OEM spark quality while saving money on the coil packs.

Expert Opinion: This is arguably one of the smartest setups. Since the spark plug takes the most abuse, using the official Motorcraft plug is a huge advantage, even if the coils are aftermarket.

HENGCOOL Set of 6 Ignition Coil Packs & Spark Plugs Kit UF646 Compatible with Ford & Lincoln V6 3.5L Ecoboost 2011-2016 F-150, Flex, Expedition, Explorer, Taurus, Transit 150 BL3Z-12029-C DG549

The HENGCOOL kit provides a robust, high-quality solution for the 3.5L EcoBoost, focusing on durability through rigorous testing. This kit includes UF646 coils and Iridium Platinum spark plugs that undergo thermal shock, humidity, and vibration testing to ensure they perform reliably in extreme conditions. The design emphasizes fast ignition and smoother engine running, which translates directly into better fuel economy and reduced exhaust emissions.

Key features that stand out:
– Materials: High-quality materials and Iridium Platinum spark plugs.
– Strict Quality Control Testing: Subjected to thermal shock, humidity, and vibration tests.
– Benefits: Provides fast ignition, aids in lowering fuel consumption, and reduces emissions.

Pros:
– Rigorous testing standards indicate high reliability.
– Iridium Platinum material offers strong performance and wear characteristics.
– Easy to install and promotes fuel savings.

Cons:
– Spark plug specifications (Heat Range: 6) are provided but require careful comparison to OEM specs.

Best for:
Users who want a budget-friendly alternative that explicitly guarantees high resistance to common failure modes (heat, vibration).

Expert Opinion: The use of Iridium Platinum is a good hybrid material for longevity and performance. For the price point, the extensive testing procedure cited offers solid reassurance.

Comparison Insights: Choosing the Best Spark Plugs For F150 Ecoboost

When reviewing the best spark plugs for f150 ecoboost, two main factors emerge: whether you need just plugs or a coil/plug kit, and whether you insist on OEM parts.

For maximum longevity and consistent performance, always stick to OEM plugs: The Motorcraft SP580X (or SP594) plugs, as featured in the OverstockDirect listings (3 and 7) and the MCK kit (9), are the undisputed heavyweights. They are specifically engineered to handle the intense heat and pressure of the twin-turbo EcoBoost. You should only consider non-OEM plugs if you are strictly focused on aggressive tuning and need a colder heat range.

Coil and Plug Combo Kits are often the best value: Many F-150 owners realize that changing the plugs is already a labor-intensive job, and replacing the coils at the same time is proactive maintenance. Kits from Yoshi Motors (1), AULINK (2), and HENGCOOL (10) provide everything needed for a complete ignition system refresh at a fraction of the cost of buying 6 Motorcraft coils and plugs separately.

Crucially, verify your gap setting: Although many Iridium plugs come pre-gapped, the EcoBoost engine is notorious for requiring a tight gap, typically 0.028 inches to 0.030 inches (0.7 mm to 0.76 mm), especially if you run a performance tune. Always double-check and adjust the gap on your new plugs before installation.

Final Verdict: Which F-150 EcoBoost Plugs Should You Buy?

Choosing the best spark plugs for your F-150 EcoBoost often comes down to budget versus application.

If absolute reliability is your priority:
We recommend the Motorcraft Spark Plug – SP580X or the OverstockDirect Genuine OEM SP594 Iridium Spark Plugs (6 pack). Nothing beats genuine OEM for factory performance, lifespan, and peace of mind.

If you need the best combination of quality plugs and value coils:
The MCK 6pcs Ignition Coil Pack And Motorcraft Iridium Spark Plug is the clear winner. This hybrid approach pairs the essential Motorcraft plug with an affordable replacement coil, providing reliable performance where it matters most without the full OEM price tag.

If you are replacing a high-mileage, misfiring system entirely:
The AULINK Set of 6 UF646 Ignition Coil Pack & SP534 Spark Plug offers the best balance of quality control and comprehensive replacement parts, ensuring your engine gets a full ignition refresh designed to last.

Best Spark Plugs For F150 Ecoboost FAQ

Q1: How often should I replace the spark plugs in my F-150 EcoBoost (3.5L V6)?

A: Ford recommends replacing the spark plugs in the EcoBoost engine approximately every 60,000 to 70,000 miles under normal driving conditions. However, due to the high cylinder pressures from the turbochargers, many experienced owners shorten this interval to 30,000 to 50,000 miles, especially if the truck is frequently towing or running a performance tune.

Q2: Why does the EcoBoost require Iridium spark plugs?

A: Iridium is an extremely durable metal that handles high temperatures and resists erosion far better than standard copper or platinum. The 3.5L EcoBoost engine runs very high boost and high cylinder temperatures, which can quickly wear down conventional plugs. Iridium ensures the plugs maintain the proper gap and provide a consistent spark under these stressful conditions, preventing premature misfires.

Q3: What should the spark plug gap setting be for a F-150 EcoBoost?

A: The factory gap specification often ranges around 0.032 inches (0.8 mm). However, if your truck experiences misfires or is running a performance tune, the widely accepted best practice is to tighten the gap to 0.028 to 0.030 inches (0.7 mm to 0.76 mm). Always check the gap on new plugs before installation, even if they are advertised as pre-gapped.

Q4: Should I replace the ignition coil packs when I change the spark plugs?

A: It is highly recommended, especially on trucks over 70,000 miles. The heat from the turbos often causes the coil packs to fail prematurely. Since replacing the spark plugs on the EcoBoost is difficult due to engine bay geometry, performing both replacements simultaneously saves significant labor time in the future. Many of the reviewed best spark plugs for f150 ecoboost options come in convenient coil and plug kits.

Q5: What are the symptoms of worn or failing spark plugs in an F-150 EcoBoost?

A: Common symptoms include engine misfires (especially under heavy acceleration), a rough or uneven idle, reduced engine power, poor fuel economy, difficulty starting, and the illumination of the Check Engine Light (often showing P030X codes).

Q6: Why are many recommendations focused on Motorcraft plugs?

A: Motorcraft is the OEM brand for Ford. They are engineered specifically for the EcoBoost engine’s unique requirements (heat range, plug thread size, reach, and material). While many aftermarket options perform well, Motorcraft plugs offer the highest guarantee of compatibility and longevity without introducing variables that could complicate diagnostics later.