Best Spark Plugs for F150 EcoBoost [2024 Review]

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Ford Ecoboost engines are famous for their towing and hauling. Hence, no ordinary spark plugs can go with this elite engine. To help you find the correct spark plugs, we’ve curated a list of the best spark plugs for f150 Ecoboost in 2021.

Best Spark Plugs for F150 EcoBoost Reviewed

The improved design of the F150 EcoBoost enables it to switch from 2-wheel to 4-wheel drive in a blink of an eye. Hence, for this unmatched quality, spark plugs made of platinum and iridium would be a perfect fit.

Motorcraft SP-432 Spark Plug

Are you looking for the best quality spark plug that has a wide range of features? Then you might have heard of platinum spark plugs that are highly durable and serve at a reasonable price. Well, here it is, Motorcraft SP-432 spark plug that has a double platinum core that fits your F150 EcoBoost engine.

There aren’t many spark plugs on the market that can match their performance and overall durability. It’s primarily due to heavy use. These plugs are incredibly short-lived. However, with SP-432 Motorcraft spark plugs, things are different.

The Motorcraft spark plugs are robust in structure. If you’re afraid about buying a faulty plug, be assured because this one is built to last. It improves the overall performance of your car by making it run more effectively. Doesn’t that sound fantastic?

Suppose you are looking for a product that lasts long and serves at its highest potential. With Motorcraft spark plugs, you don’t have to worry about anything, unlike low-quality spark plugs that wear out after a few thousand miles. These spark plugs tend to last longer. Solid build quality also contributes to a product’s total longevity, which is fantastic.

In case you were wondering, a double-platinum construct isn’t fragile. If you’d like a spark plug that can serve a long period and improve your vehicle’s overall performance, this is the one to get.


  • The Motorcraft Iridium spark plugs have a double-iridium core.
  • The spark plug is robust and resistant to any damage.
  • The spark plug can work under harsh conditions
  • It is a good choice for cold starts.
  • These Motorcraft spark plugs are affordable.


  • Below average packaging, gets damaged before delivery.
  • It can pry after multiple uses.

Bosch Automotive 9616 Spark Plug

A spark plug’s construction must be long-lasting. The Bosch Automotive 9616 spark plug is a fantastic choice if you want a durable spark plug. It is composed of two layers of iridium. As a consequence, there are no concerns about the impact of the structure. 

The spark plug in your vehicle has to withstand a lot of abuse. It’s challenging to maintain its quality over time. The performance of a car is heavily reliant on the spark plug. You won’t receive the commission you anticipate from your vehicle if it has a brittle spark plug.

If you’re familiar with spark plugs, you’re aware that iridium spark plugs are of the highest quality on the market. They are not only powerful but also quite effective. They put up a terrific show for you.

Corrosion-resistant iridium is fused to the plug’s maximum durability foundation by a 360-degree continuous laser welding technique. This product is ideal for those looking for high fuel efficiency and performance.

It is more expensive than other items, but its durability is exceptional. It’s well worth the investment. If you ride your car all day and utilize it a lot, you’ll like this spark plug. It has the potential to improve your riding experience significantly.


  • The durability of these Bosch Spark plugs is commendable.
  • It lends superior fuel efficiency.
  • It can handle rough usage.
  • This spark plug provides excellent ignitability.
  • It is highly sturdy.


  • Prone to easy damage– a damaged spark plug can lead to misfires.

Motorcraft SP-479 Spark Plug

To keep the price low, the manufacturers cut a lot of shortcuts. As a result, you usually wind up with a low-quality product. It may be difficult, but not impossible, to find a high-end spark plug at a low price. Let’s have a look at the Motorcraft SP-479 spark plug.

If you’re new to driving but still want the most satisfactory performance from your car, you don’t have to spend a lot of funds on extras. There are numerous inexpensive spark plugs on the market. They all share the same problem.

It is a high-quality product for the price. In a single word, this spark plug’s durability is outstanding. It has a range of 60,000 to 100,000 miles that is a considerable distance. Its overall quality is also rather excellent.

Surprisingly, you’re getting a lot of bang for your buck with just one product. It has excellent durability and good resistance to erosion. It can give your car a leg up, regardless of the weather or the state of the vehicle. Knowing that is always reassuring.

This spark plug is ideal for anyone who wants to improve their riding skills. If you’re a newbie, you do not have to spend more funds on spark gear. This product meets the demands of the typical consumer.


  • A good fit for such an affordable price.
  • It can provide excellent mileage.
  • It is sturdy and doesn’t fall apart.
  • The ignition system has a coil to produce effectual output.
  • Yields best engine performance.


  • It can be inconsistent.
  • Not a good fit for rough roles.

Denso ITV20TT Iridium TT Spark Plug

As previously said, stock spark plugs are good for up to 70,000 miles; to achieve something similar, you’ll need the best spark plugs for your Ford F150 EcoBoost 3.5L engine. Denso’s Denso ITV20TT Iridium TT Spark Plug offer similar excellent quality but are less priced. That translates to incredible deal.

EcoBoost engines are built to deliver better performance while using less gasoline. You’ll get more horsepower and better fuel efficiency with an EcoBoost engine than you would with a standard machine.

When we anticipate an engine to deliver anything like this, it’s clear that every piece of the engine linked explicitly to power and efficiency will be put to the test. The spark plug is the engine component that experiences the most stress and strain. As a result, you cannot just replace the present spark plugs with any spark plug.

Yes, it will fall short of Denso’s primary offering. However, it is superior to practically any other product available. This product includes a full producer guarantee for a predetermined period to ensure quality. It is not an ordinary dedicated spark plug like most others.

It implies that this spark plug can fit various other models and engines with the proper gap measurement. The most excellent part about this specification is that it provides the same level of performance on all vehicles, even on non-EcoBoost engines.


  • These spark plugs can work under any weather conditions.
  • They offer excellent fuel efficiency.
  • They are affordable and come with various features for which a few brands might charge higher.


  • Installation isn’t very smooth, lingers a bit before it fits.

Features to Consider for Buying Spark Plugs for F150 EcoBoost

Every spark plug is built differently. Learning about the various aspects that affect your experience with spark plugs will bring you a step closer to spending funds on the right product.

Product Gap Design Thread Diameter Tip Shape
Motorcraft SP-432 Spark Plug0.044”Tapered14 mmPointed
Bosch Automotive 9616 Spark Plug0.043”Tapered14mmPointed
Motorcraft SP-479 Spark Plug0.032”Tapered14mmPointed
Denso ITV20TT Iridium TT Spark Plug0.039”Tapered14mmPointed

Here are some features you must consider when buying spark plugs for your F150 EcoBoost:

#1 Space Between Discharge Tip and Electrode

Spark plugs are one of the few spare auto parts made with high precision, and any minute change in the value can hamper its performance. Unfortunately, there is a misconception that prying the electrode away or nearer to the tip will fix the spark plug.

Though it may temporarily help, one should be mindful of the value of the space between the two. 

Every engine is different. Thus, no two spare parts could be the same (irrespective of specs). Hence, there isn’t a standard gap value for spark plugs.

However, the manufacturers do provide a specific value that one should maintain for the optimum performance of the spark plug. 

Ford F150 EcoBoost driving on a sandy path

For instance, the spark plugs discussed in our guide must have a gap value of 0.55mm.

To achieve this value, they highly suggest using a prying tool like a gapping tool. Using any other tool like bare hands is not advised.

Note: Never over-pry the ground electrode. This is because when you pry it way near to the tip, it will wear off quickly. Meanwhile, if you pry it way farther, then enough sparks won’t generate.

#2 Price

Any buyer pays attention to two things before buying a spare part: its specs and its price. A spark plug is worth if it offers maximum qualities in a reasonable price range.

The spark plugs available in the market cost anywhere between $2.5 to $15. The price depends on the core material (double iridium spark plug is costly than the rest), additional features, technically advanced design, efficiency, and durability.

Spark plugs on a low-cost end have a copper core. A $3 spark plug is the best fit for racing cars that require high deliverable power in a short time span.

However, if you are looking for a spark plug that meets your daily driving requirements, you can pick the one that costs anywhere between $6 to $10. 

If you want to upgrade to a premium quality one, then double iridium core is the one for you that costs anywhere between $12-$15.

#3 Design Of The Spark Plug

The purpose of the spark plug, as the name suggests, is to produce combustion inside its chamber and ignite the spark to run the engine. The plug is sealed with a spark plug seat to overcome the loss in discharge. The metal alloy shell

of the spark plug has two kinds of metal seating:

  1. Gasket Seat: Additional tapering is made to protect the spark plug’s chamber in a gasket seat. It is done to ensure that the heat transfer is taking place correctly in the spark plug.
  2.  Tapered Seat: In a tapered seat, there is no gasket. Thus, the tapering itself seals the shell. In other words, no additional metal layer is laid for protection other than the coating itself. The coating is strong enough to fill the chamber. 

Remember that you can use only one type of seated spark plug to run the engine. Thus, you cannot use a tapered spark plug in place of a gasket spark plug or vice-versa. The spark plugs discussed in this guide are all tapered.

If you are unaware of what seating you should choose, refer to the user manual or check the older spark plug and confirm it.

#4 Dimensions of the Thread

The thread in a spark plug is the metallic spins on the shell. The threads on a spark plug resemble a screw-like structure which allows the plug to fit in the socket. These threads play a vital role in keeping the spark plug cool by diverting the heat away from the chamber.

The dimension of the thread matters a lot while buying a spark plug. Thus, one should go with the same thread size as that of their previous spark plug. But if you upgrade from your existing spark plug to get a platinum or iridium conductor spark plug, you should refer to the thread size mentioned in the manual.

Always remember that the thread size should neither be small nor too long. It is because; short thread length will hamper the functioning of the spark plug. 

Spark plug

It will eventually result in necessitous combustion because the spark plug will be distant from the combustion chamber. Thus, fuel will not reach the spark plug correctly, and at last, the plug will not serve at its best efficiency.

On the other hand, if the thread length is more than the requirement, the spark plug will be too close to the piston. Thus, it will create excess friction and stress in the area and eventually damage the spark plug and the piston.

Standard Thread Measurements

The thread length of the spark plug is measured from the seat of the spark plug to the end of the thread.

In a gasket seated spark plug, the length is measured from the seat’s face to the end of the thread. Meanwhile, the measurement is taken from the top seat to the other end in a tapered seat spark plug.

The measurement of the threads is either mentioned in fractional or decimal values.

Here are some letter notations with their corresponding thread size (mm) and descriptions that you can look for on the spark plug. For more details, refer to the manufacturer’s website for the complete list:

  • I – 8mm (0.31 in) – 0.01 in thick iridium electrode
  • L- 18mm (0.70 in) 
  • T- 14mm (0.55 in) – Taper seat

#5 Tip of the Electrode

The shape of the electrode is essential for the adequate performance of the spark plug. You might have read this in one of your physics classes that sharp tip discharge more current than a rounded one.

That’s why most companies incorporate tech-inclusive designs that maximize the spark discharge with minimal add ons.


Choosing what fits the best for your vehicle typically requires trial and error. Now that you know about the best options in the market and have learned how to pick between them, you should make the best purchase the first time around.