11-24 Ford F-150 / 17-21 Raptor / 21-24 Bronco / 19-24 Ranger Ford Racing M-12405-35T Cold Spark Plug Set for 2.3 / 2.7 / 3.0 / 3.5 Ecoboost

The Ford Racing M-12405-35T spark plug set is a high-performance upgrade for your Ford EcoBoost engine. It improves power, efficiency, and durability, and is compatible with most tuners and mods.

Top Features:

  • One heat range colder than stock
  • Iridium tip for longevity
  • Tapered seat for tight fit
  • Pre-gapped to 0.031-inch

Vehicle Fitment:

  • 2011-2021 F150 3.5L EcoBoost (for vehicles built up to July 2021)
  • 2017-2021 F150 Raptor 3.5L EcoBoost (for vehicles built up to July 2021)
  • 2015-2024 F150 2.7L EcoBoost
  • 2010-2019 Taurus SHO 3.5L EcoBoost
  • 2010-2019 Flex 3.5L EcoBoost
  • 2021-2024 Bronco 2.7L EcoBoost
  • 2021-2024 Bronco 2.3L EcoBoost
  • 2023-2024 Bronco Raptor 3.0L EcoBoost
  • 2024 Ranger 2.7L EcoBoost
  • 2019-2024 Ranger 2.3L EcoBoost
Vendor: Ford Racing
SKU: M-12405-35T
Availability: 41 In Stock
$ 67.00 USD
On-Sale $ 67.00 USD
Normally
Better hurry, only 41 left in stock.

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UPC: 756122008324
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Proposition65 Warning: Cancer and Reproductive Harm

Ford Racing M-12405-35T Cold Spark Plug Set

If you are looking for a high-performance spark plug set for your Ford EcoBoost engine, look no further than the Ford Racing M-12405-35T cold spark plug set. These spark plugs are designed to handle higher than stock cylinder combustion pressures and deliver a reliable and powerful spark for your engine. Whether you are racing, towing, or just cruising, these spark plugs will ensure optimal performance and efficiency for your Ford vehicle.

Key Features:

  • One heat range colder than stock spark plug
  • Iridium tip for enhanced durability and longevity
  • Tapered seat for a secure and tight fit
  • Sold in sets of 6
  • Pre-gapped to 0.031-inch (0.8mm)

Benefits:

  • Improves engine response and power output
  • Reduces the risk of detonation and pre-ignition
  • Enhances fuel economy and emissions
  • Compatible with most aftermarket tuners and modifications
  • Backed by Ford Performance Parts warranty

Product Specs:

  • Spark plug thread size: 14mm
  • Spark plug reach: 0.750 in. (19.05mm)
  • Spark plug seat style: Tapered
  • Wrench diameter: 14mm
  • Electrode tip material: Iridium
  • Center electrode type: Projected
  • Ground strap quantity: One
  • Resistor: Yes
  • UPC code: 756122008324
  • Country of origin: Japan

Install Difficulty Level:

  • Easy
  • No special tools required
  • Estimated install time: 15 minutes

Vehicle Fitment:

  • 2011-2021 F150 3.5L EcoBoost (for vehicles built up to July 2021)
  • 2017-2021 F150 Raptor 3.5L EcoBoost (for vehicles built up to July 2021)
  • 2015-2024 F150 2.7L EcoBoost
  • 2010-2019 Taurus SHO 3.5L EcoBoost
  • 2010-2019 Flex 3.5L EcoBoost
  • 2021-2024 Bronco 2.7L EcoBoost
  • 2021-2024 Bronco 2.3L EcoBoost
  • 2023-2024 Bronco Raptor 3.0L EcoBoost
  • 2024 Ranger 2.7L EcoBoost
  • 2019-2024 Ranger 2.3L EcoBoost

If you have any questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.

Shipping Policy

MPT is proud to offer free shipping on most orders over $149.

  • Free shipping applies only to the contiguous United States. Shipping and handling charges will apply to orders outside the contiguous US, and the buyer is responsible for any duty fees or taxes their home country may charge to import goods.
  • With free shipping, we will choose the best shipping method for your order. We use all major carriers, including USPS, FedEx, UPS, and DHL.

Turnaround Times:

  • MPT Tunes have a standard turnaround time of 2-3 business days, beginning once we receive your MPT Tune Form.
  • We do not process orders on weekends or observed holidays, which do not count as business days.
  • Physical items that are in stock at MPT and ordered by 4PM EST will be shipped the same day. Orders placed after 4PM EST will be processed on the following business day.

Special Considerations:

  • Items not stocked at our location will follow the same processing times but may experience lead-time delays and could incur additional charges. Shipping methods may vary for these items based on what was paid and the requested delivery speed. If you need an item by a specific deadline, please contact an MPT Expert.
  • SCT Tuner Orders with the Prioritized Order option must have their tune forms submitted by 3PM EST to be completed the same day. Forms submitted after this time will be processed the next business day.
  • Orders will ship to the billing address listed on your order. If paying by credit or debit card, we can only ship to the billing address. Contact an MPT Expert for assistance if you need a different shipping address.

MPT Performance Returns and Refund Policy

A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.

MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.

Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.

For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.

The customer is responsible for all shipping charges incurred during the return process.

Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.

HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.

Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.

nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.

MPT Decals are Non-Refundable, once they have been received by the customer.

Cold spark plugs designed for tuned Ecoboost engines. Customers praised pre-gapped convenience, fast shipping, and performance improvements including smoother idle, better gas mileage, and resolved misfires. "These are the only spark plugs for an Ecoboost," one customer noted. Highly recommended for tuned vehicles.

Service (positive)Gap (positive)Misfires (positive)Performance (positive)Tune (positive)
  • 5 stars: 19 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
Adam Flettrich (United States)
Always quick and great customer service

Always quick and great customer service. Got these just days after I ordered and always pre gapped to the correct gap. The best company in the business !!

T
Troy (United States)
Spark plug get for the new tunes

They're spark plugs and they're doing what they should be doing. Seems to idle better/smoother now. Looking back, I probably should've gapped them a little tighter rather than leaving at 0.031. Quick weekend fix!

MPT has been awesome and will be shopping here again!

R
RAUL IGLESIAS (United States)
Necessary Upgrade for Tunes

Had a misfire in my spark plugs after the tune and these spark plugs fixed that all up. Highly recommend the spark plugs if you are applying a tune.

S
Steven Aday (United States)
Great product great service and always great help will do future work with these guys

Great service great help any questions or help you great service will do work with them in the future

S
Shane Goertzen
Top choice

These are the only spark plugs for a Ecoboost.

J
Jonathan Rich
MPT IS THE MVP

I needed to replace my plugs badly. They were causing a nightmare with misfires. I ordered these yograded cold plugs and they solved the problem. MPT is the real MVP because my phone had shipping info saved that was out dated and incorrect. Simply I gave MPT the wrong info and they fixed the order and sent it to me after the fact.

J
Jeff (United States)
Spark Plugs

I cannot say enough great things about this company. I ordered these plugs for my 2016 3.5 and when they got lost in the mail, MPT stepped up and replaced my order without hesitation! Hands down one of the best Customer service moves you can make. The plugs work perfectly and perform just like the description says. Buy with confidence from MPT. I've been tuned by them with complete happiness and all my parts come from these guys now. Thank you!

C
Chris (United States)
Great product from a great company

Plugs shipped fast and cheaper than an auto parts store. These are great for peace of mind especially if you have a few upgrades to your vehicle.

R
Ronnie Shawn (United States)
Performance Plugs from MPT

after installing these plugs I could tell a good amount of difference in the gas milage and the Quickness coming off the line

B
Brian Park (United States)
Good plugs

The plugs to go with if tuned. Checked the gap and they were all in spec. (Always check the gap) Probably the least inexpensive you'll find and fast shipping.

b
brandon corie (United States)
2017 raptor

I always get my plugs from mpt. Gapped correct right out of the box. Fresh plugs smooths the idle out on a tuned raptor especially after you’ve run the old set over 10k miles. And it’s only 6 plugs. My gen 1 had 16. It’s a easy 30 min job . Freshen up your plugs people.

E
Eliezer Hernández (United States)
Spark plus

Awsome product really happy

G
Gregory Dunn (United States)
2.7 Ecoboost

2018 F-150 2.7 with Lots of aftermarket, OEM spark plugs (sp578) (1 step hotter then these plugs) we’re going quick. The truck is very sensitive to the spark plug gap. I called MPT and asked them if there was anything that would help with how fast they were going out. They recommended these which surprised me, Ford does not mention this (only for 3.5) I trusted them and purchased a set.. bet damn aftermarket part so far, lol got tired of replacing them. Truck runs a little smoother, my gas mileage seamed to go up a little, probably my imagination , either way they work for me. They are also Pre-Gapped no need to adjust! Hope this helps someone out.

B
Brandon Crawford (United States)
Love them

My Gen 2 3.5 really runs so much better with these plugs. Came ready to install.

J
Jeremy Tolzman (United States)
F-150 Ecoboost

Fast Delivery and Excellent performance, They came with a pre gap which was correct when i checked them so no gapping.

J
J.D. Sauer (United States)
FRM-12405-35T Ford Performance Cold Spark Plugs Set of 6 (M-12405-35T / SP-542)

Swapped during coil replacement, running with MPT 93 octane tune, great thus far.

K
Kristopher Anderson (United States)
Fixed several problems….

Before the plug swap, I had the dreaded shudder, limp mode change, and rough idle. Didn’t figure my plugs were too awful bad. I was wrong. These plugs made a huge difference. Any ailment I may have had is gone. Couldn’t tell on MPG, foot is too heavy to be able to verify.

J
Jose Rodriguez (United States)
Another great product

Another great product. I'm very happy and pleased with the added performance of the plugs they really compliment the 93-PRX tune I'm running. Can't say nothing but good things about these guys and their customer service will definitely use these guys again.

C
Christopher Pruitt (United States)
Motorcraft spark plugs

Great plugs they really woke my truck when tune was installed

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