FFP 2015-2023 Ford Mustang Ecoboost NGK LTR7IX-11 Pre-Gapped Plugs
OEM-replacement NGK spark plugs specifically for your EcoBoost Mustang. Stock heat range for reliable performance. Essential maintenance item - replace every 60,000 miles or sooner with modifications.
✓ NGK OEM spec ✓ Stock heat range ✓ Reliable ignition ✓ Set of 4
or as low as $8.33/mo with Affirm
If you’ve purchased a pro tune from us or plan on purchasing one, it is absolutely essential that you upgrade your plugs to these 1 step colder, pre-gapped plugs from Function Factory Performance. What do they do exactly? More boost always equals more heat. These plugs have a colder heat range allowing better heat dissipation. These plugs have been gapped to.026 but if needed we can gap them to .028
- FOR TUNED MUSTANG ECOBOOST ONLY
- These plugs are plug and play and require no additional gapping.
- Do not over-torque your plugs, trust us, you’ll have a bad day. 13 ft/lbs are our recommendations.
- 4 plugs are included
- Do not use anti-seize
- There is an option for E85 use
11 reviews for FFP 2015-2023 Ford Mustang Ecoboost NGK LTR7IX-11 Pre-Gapped Plugs
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FREQUENTLY ASKED QUESTIONS
You'll get an instant confirmation email with your part details and invoice. We source from a network of authorized suppliers across the country, so lead times vary by brand and part type — we'll send a tracking number the moment your parts move.
Made-to-order builds — carbon fiber bodywork, fabricated systems, custom finish work — run longer than off-the-shelf items because they're built per order. You'll get progress updates throughout the build.
Need a specific timeline on a part before you buy? Call 805-267-9762 or hit the chat — we'll check vendor stock direct and give you a straight answer.
Absolutely! Once your order ships, you'll get an email with a tracking link so you can follow its journey from our shop to your doorstep.
If your order ships via freight, you'll get a separate email with a direct link to the carrier's tracking page — easy and stress-free.
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William Wood (verified owner) –
Changed out the factory plugs for these pre gapped gems in my sons car the other day. Wow, what a difference! They really seem to have pepped the old EcoBoost up ???????
danny G. (verified owner) –
Absolutely wonderful customer service
Edgar Lomeli (verified owner) –
Service was amazing fast shipping highly recommend purchasing NGK Pre-Gapped Plugs From this site!
Charles Siritho (store manager) –
Thank you for the comment and feedback, Edgar. We are happy to hear that. Please continue to support us by following us on our youtube and Instagram. https://www.youtube.com/thefunctionfactoryaz and https://www.instagram.com/ffperformanceaz/
Jose D Duarte (verified owner) –
Everything good
Charles Siritho (store manager) –
We are happy to hear that, Jose. Please continue to support us by following us on our youtube and Instagram. https://www.youtube.com/thefunctionfactoryaz and https://www.instagram.com/ffperformanceaz/
Will T. (verified owner) –
These plugs are clutch for a tuned EBM. Haven’t tossed my new one in yet, sitting on my current plugs for about 15K miles… I’ll get to it now when I need to, easy 20 minute job. But Charles and crew from FFP are making their way into the industry and showing exquisite customer support, so I figure why not. He’s the homie. At least he seems like it I never actually met him before lol
Charles Siritho (store manager) –
Thank you for the kind words, Will. We look forward to hearing about your experience with the plugs. Please continue to support us by following us on our Youtube and Instagram https://www.youtube.com/c/TheFunctionFactoryaz and https://www.instagram.com/ffperformanceaz/
Rollie C. (verified owner) –
Lawrence D. (verified owner) –
Phillip Barrios (verified owner) –
Paired these with performance coil packs. Amazing!! I highly recommend these spark plugs.
Charles Siritho (store manager) –
Thank you for your comment Phillip, we appreciate your feedback. We are glad you like your spark plugs and that they performed to your liking. Please continue to support us by following us on our Youtube and Instagram https://www.youtube.com/c/TheFunctionFactoryaz and https://www.instagram.com/ffperformanceaz/
Jeff Vanasse (verified owner) –
Amazing as always, why I keep coming back. Charles is an amazing business owner.
Chadd L. (verified owner) –
These things are awesome! And since they are pre-gapped, it’s a fast install and I feel a little better about it!
Connor Montgomery (verified owner) –