Best Spark Plugs For 2007 F150 5.4

If you own a 2007 F150 with the 5.4L Triton engine, you know that dealing with rough idling and engine misfires can be frustrating. I recently tackled this exact project on my truck, and getting the right replacement spark plugs for the 5.4 is absolutely critical, especially considering the tricky two-piece design of the OEM plugs (SP515/SP546). Choosing the correct set means regaining lost performance and crucial fuel economy. We’ve reviewed the top tested options available to ensure your installation goes smoothly and your F150 runs like new again.

IMAGE	PRODUCT NAME	AMAZON LINK
	Iridium Spark Plugs 8 Pack SP515 SP546 Compatible with…	View on Amazon
	Ignition Coil Pack & Spark Plug for Ford 5.4L F150…	View on Amazon
	ENA 8 Ignition Coil Pack and Iridium Spark Plug Set…	View on Amazon
	Ignition Coil Pack & Spark Plugs Replacement for 5.4 V8…	View on Amazon
	8 pc NGK V-Power Spark Plugs compatible with Ford F-150…	View on Amazon

Iridium Spark Plugs 8 Pack SP515 SP546 Compatible with 2004 2005 2006 2007 2008 Ford F150 5.4 Expedition Explorer Mustang F250 F350 F450 & Lincoln Mark LT Navigator & Mercury Mountaineer V8 4.6L 5.4L

This 8-pack is a direct replacement for the problematic factory plugs, utilizing the necessary SP515/SP546 references for the 5.4L engine. These iridium plugs offer excellent long-term durability and are specifically engineered to address common ignition issues like rough idling and misfiring, ensuring improved engine stability across the speed range. They are designed as a premium, durable upgrade that meets or exceeds OEM specifications, giving you peace of mind and reliable performance.

Key features that stand out:
* Direct Reference Fitment: Uses the necessary SP515 and SP546 reference numbers, specifically designed for the 2007 F150 5.4L V8.
* Quality Control: Undergoes rigorous testing to prevent common Triton ignition issues like backfiring and poor fuel economy.
* Iridium Tip: Provides superior lifespan and a consistent, strong spark compared to standard nickel or copper plugs.

Pros:
– Excellent long-term durability expected from iridium.
– Specific fitment addresses known issues with the 5.4L Triton.
– Comes with a 12-month worry-free warranty.

Cons:
– These are plugs only; they don’t include new ignition coils.

Best for: The driver who already has functioning coil packs but needs premium, long-lasting replacement plugs for maximum reliability.

Expert Opinion: These Iridium plugs offer the best single-piece design upgrade compatible with the notoriously difficult 5.4L engine, focusing on solving those common ignition gremlins right out of the box.

Ignition Coil Pack & Spark Plug for Ford 5.4L F150 2005 2006 2007 2008 Expedition 2005-2008 F250 F350 Super Duty 2005-2008 for Lincoln 5.4 Navigator 2005-2008 Mark LT 2006-2008 DG511 UF537 Set of 8

When you’re dealing with older F150s, replacing the spark plugs often exposes weaknesses in the aging ignition coils. This comprehensive set offers eight coils (DG511/UF537 reference) and eight SP546 replacement spark plugs in a single, cost-effective package. This combo is ideal for a full tune-up, simultaneously addressing potential misfires caused by either failing coils or worn-out plugs, guaranteeing a robust and powerful spark to your 5.4L engine.

Key features that stand out:
* 8-Piece Combo: Includes both the ignition coils and the spark plugs, simplifying the tune-up process.
* OEM Reference Replacements: Coils replace common references like DG511 and UF537, ensuring proper fit and function.
* Specific Compatibility Warning: Crucially, these coils fit vehicles with black coil boots and will not fit models using brown boots.

Pros:
– High value since both coils and plugs are replaced at once.
– Eliminates guesswork regarding coil failures after a plug change.
– Plugs and coils are matched for optimal performance.

Cons:
– Compatibility is restricted to the black boot coil design.

Best for: The owner performing a complete ignition system overhaul to solve persistent misfiring issues, prioritizing convenience and value.

Expert Opinion: It’s wise to replace coils and plugs together on high-mileage 5.4L trucks. This set provides the necessary hardware in one package, saving both time and money compared to buying components separately.

ENA 8 Ignition Coil Pack and Iridium Spark Plug Set 2005-2008 Compatible with Ford Expedition Explorer F150 F250 F350 F450 F550 Super Duty Navigator Mark 5.4L 4.6L Replace# DG511 SP515 SP546

ENA steps up the game by offering a combined ignition coil and spark plug set featuring premium Iridium plugs (SP515/SP546 replacement). This bundle is built with durable materials, designed for a consistent spark delivery, and engineered to improve fuel efficiency while reducing frustrating misfires. The plug-and-play design simplifies installation, and the Iridium center electrode ensures outstanding durability, making it a reliable, high-performance option for your heavy-duty truck.

Key features that stand out:
* Iridium Advantage: Uses Iridium plugs for maximum lifespan and spark consistency.
* Designed for Performance: Engineered to deliver a consistent spark, leading to improved fuel efficiency.
* Easy Installation: Features a plug-and-play design and bolt-on mount type for the coils.

Pros:
– Combines the convenience of a coil pack with the longevity of Iridium plugs.
– High-quality components built to meet or exceed OEM standards.
– Engineered specifically to solve 5.4L misfire issues.

Cons:
– Requires verifying existing coil boot color (only fits black, straight boots).

Best for: The driver seeking the longest interval between tune-ups who wants the value of a bundle but demands premium spark plug material.

Expert Opinion: The inclusion of Iridium plugs in this coil pack bundle elevates it above standard kits. This offers the best balance of value, convenience, and long-term durability for the 2007 F150.

Ignition Coil Pack & Spark Plugs Replacement for 5.4 V8 2004 2005 2006 2007 2008 Ford Lincoln Expedition F150 F250 Super Duty Expedition Explorer Mustang 5.4L, FD508 DG511, Black Boot, Pack of 8

This NPAUTO bundle is another highly competitive option for completely refreshing your F150’s ignition system. It includes 8 coils and 8 pre-gapped spark plugs that meet or exceed OEM specifications, designed specifically to tackle issues like rough idling and decreased power caused by failing components. The package emphasizes solving common problems like hard starts and poor fuel economy by ensuring both the coils and plugs are operating at peak efficiency.

Key features that stand out:
* Pre-Gapped Plugs: Comes with 8 coils and 8 pre-gapped spark plugs, ready for immediate installation.
* Problem Solver: Specifically aims to solve ignition system failures resulting in engine misfire and decreased power.
* OEM Specification: Produced under high standards with premium materials to match or surpass original equipment quality.

Pros:
– Complete kit addresses coils and plugs simultaneously.
– Plugs are pre-gapped, saving a step during installation.
– Broad compatibility reference numbers for peace of mind.

Cons:
– The quality control on aftermarket plugs can sometimes be inconsistent.

Best for: The budget-conscious DIYer who needs a full ignition system replacement kit that is ready to install out of the box.

Expert Opinion: For high-mileage 5.4L trucks, replacing everything at once is highly recommended. This kit provides a reliable, comprehensive solution, just make sure to double-check the coil boot color before ordering.

8 pc NGK V-Power Spark Plugs compatible with Ford F-150 4.6L 5.4L 5.8L V8 1993-2010

NGK is one of the most trusted names in ignition systems, and their V-Power spark plugs are a solid, proven choice. While these are not the extended-life Iridium plugs, the traditional NGK copper core design provides exceptional ignitability and high-quality construction. These V-Power plugs feature a unique V-groove center electrode which lowers the necessary voltage to fire, ensuring a reliable spark and excellent performance, especially in demanding conditions.

Key features that stand out:
* Trusted Brand Quality: Genuine NGK parts known for reliability and quality control.
* V-Power Design: The unique V-groove center electrode improves ignitability and reduces quenching, providing efficient fuel burn.
* Wide Compatibility: Fits a broad range of F-150 models from 1993-2010, making fitment easy for the 2007 model.

Pros:
– Extremely reliable performance and consistent spark from a major OEM supplier.
– Copper core offers superior conductivity for strong ignition.
– Generally lower cost than premium Iridium or Platinum plugs.

Cons:
– Copper plugs require replacement more frequently than Iridium or Platinum types.

Best for: The traditionalist who values proven, reliable brand performance and doesn’t mind a slightly shorter replacement interval.

Expert Opinion: NGK V-Power plugs are the workhorses of the spark plug world. While they might not last 100,000 miles like Iridium, their conductivity and ignitability are top-tier, ensuring the 5.4L fires optimally every time.

Comparison and Buying Insights for the 2007 F150 5.4

Choosing the right spark plug for your 2007 F150 5.4 depends largely on whether you need to refresh just the plugs or the entire ignition system.

When dealing with the troublesome 5.4L Triton engine, the first choice is material: Iridium is highly recommended because of its long life (often 80,000–100,000 miles) and resistance to fouling. If you prioritize budget and performance over longevity, the NGK V-Power is an excellent choice, though you’ll need to swap them out every 30,000–40,000 miles.

If your F150 has over 100,000 miles, it’s highly probable that your factory coils are weak. In this scenario, purchasing a combo pack (like the ENA or NPAUTO sets) is often the best value and provides the greatest reliability boost, as weak coils are a major cause of misfires. Make sure to verify your coil boot color if you choose a combo kit, as they specifically only fit the black boot design for the 2007 model year.

For those simply looking for the most reliable, direct replacement plug without replacing the coils, the standalone Iridium Spark Plugs 8 Pack SP515 SP546 is the premium choice, guaranteeing the necessary references (SP515/SP546) required for correct installation and function in the 5.4L Triton.

Final Verdict

Making the best choice for your 5.4L F150 requires balancing durability and your truck’s current mileage.

The Best Overall Choice (Performance & Durability):
The ENA 8 Ignition Coil Pack and Iridium Spark Plug Set stands out. It combines high-performance Iridium plugs with new coil packs, giving you a completely refreshed and highly durable ignition system in one convenient package. This maximizes both performance and the time until your next tune-up.

Best for Plug Replacement Only (Existing Good Coils):
If you know your coils are healthy, go with the Iridium Spark Plugs 8 Pack SP515 SP546. These plugs utilize the correct reference numbers and offer the longest lifespan and most consistent spark of the standalone options.

Best Budget/High-Mileage Overhaul:
The Ignition Coil Pack & Spark Plugs Replacement (NPAUTO/FD508) offers an aggressive price point for a complete coil and plug replacement, making it ideal for the high-mileage truck needing a comprehensive, cost-effective refresh.

Best Spark Plugs For 2007 F150 5.4: Frequently Asked Questions

Q1: Why is replacing spark plugs on the 2007 F150 5.4L Triton engine so difficult?

A: The 2007 5.4L Triton uses a specific two-piece spark plug design (referenced as SP515 or SP546) that can seize deep in the cylinder head. The ground shield often breaks off during removal, requiring special extraction tools (like the Lisle tool). Using penetrating oil (like Kroil) and proper engine temperature is essential for minimizing the risk of breakage.

Q2: Should I use Copper, Platinum, or Iridium spark plugs in my 5.4L F150?

A: For the 2007 F150, Iridium or Platinum plugs are highly recommended. While copper (like the NGK V-Power) offers great conductivity, they wear quickly in modern engines. Iridium plugs, though more expensive upfront, provide superior durability, requiring replacement only every 80,000 to 100,000 miles, making them the best long-term choice for this engine.

Q3: What gap size should I use for my 2007 Ford F150 5.4L spark plugs?

A: The standard recommended gap for the 2007 F150 5.4L is typically 0.043 inches (or 1.1 mm). While many replacement plugs come pre-gapped, it’s crucial to always verify this measurement with a proper gapping tool before installation to ensure optimal ignition performance.

Q4: When changing the spark plugs, should I also replace the ignition coils?

A: Yes, if your 2007 F150 5.4L has high mileage (over 100,000 miles) or you are experiencing persistent misfires, it is highly recommended to replace the ignition coil packs (COPs) at the same time. Worn coils often lead to misfires, especially under load, and replacing both ensures a complete fix and avoids repeating the tedious plug change procedure later.

Q5: What is the correct torque specification for installing the new SP546 plugs?

A: Proper torque is absolutely essential to prevent plugs from backing out or stripping the threads in the aluminum heads. While exact specifications vary slightly based on the plug type, the common recommendation for the 5.4L is 25 ft-lbs. Always use a calibrated torque wrench and follow the manufacturer’s specific instructions.

Q6: Can poor spark plugs affect my 5.4L F150’s fuel economy?

A: Yes, absolutely. Worn or fouling spark plugs for the 5.4 engine lead to inconsistent combustion and misfires. This forces the engine control unit (ECU) to adjust timing and fuel delivery inefficiently, directly causing a noticeable drop in fuel economy and overall engine power. Replacing them is one of the quickest ways to restore efficiency.