2011-2017 F150 EcoBoost 3.5L NGK 6509 Iridium IX Spark Plugs (Set of 6) LTR7IX-11

11-17 F150 EcoBoost 3.5L NGK 6510 Iridium IX Spark Plugs

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Part#:

6510-LTR7IX-11-ECO

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25 Customer Q&A(s)

$54.95

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Product Features
6 Customer Review(s)
25 Q&A(s)

Highlights:

Help alleviate spark blowout and rough idle
Excellent for both tuned and stock trucks
Features iridium tip less prone to spark blowout
Less fouling and wear than copper plugs
Colder heat range for aggressive mods and tuning
Full set of six spark plugs
Gap for tuned trucks: .028-.030"
Gap for stock trucks: .030-.032"

Improved Spark with One Step Colder Heat Range than Stock

When you throw an aggressive tune and a wide range of F150 EcoBoost Performance parts at your very own 3.5L V6, you'll need a few bits of fine tuning to get your EcoBoosted motor running at its best. These NGK Iridium IX spark plugs are a nice upgrade that have a one step lower heat range than OEM for heavily modified and tuned trucks that still feature NGK's legendary reliability and performance. The Iridium IX plugs are built from the ground up to resist corrosion and fouling while providing improved spark, reliability, and versatility over your truck's factory spark plugs. This full set of six iridium spark plugs from NGK are an excellent choice for tuned vehicles that have wore out the welcome of the factory plugs.

High-Quality Iridium Tip and Corrosion-Resistant Design

The NGK Iridium IX spark plugs are named after their .6 mm laser-welded iridium tip that delivers a powerful arc while being highly resistant to corrosion and fouling. The insulator and electrode feature Trivalent metal plating that offers up vastly improved anti-seizure and anti-corrosion properties than traditional spark plugs. These plugs have a tapered electrode that reduces quenching while making regapping extremely simple.

Spark Plug Specifications:

Thread Size: 14mm
Heat Range: 7
Wrench Diameter: 5/8"

Have Questions?

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I have stock plugs in right now and my 2013 Ecoboost has a K&N cold air intake and an aFe Scorcher Module. Would these be the plugs I should put in and gap them at .30 or do you recommend something else?

Asked by: Rob - 10/7/2014

Generally, you'd only need these colder heat range plugs if you're heavily modified with bolt-ons and fairly aggressive tuning. If you plan on getting more parts and custom tuning down the road, then these plugs would still work. However, you'd probably be better off with NGK 6509s in the factory heat range, since your modifications are fairly basic.

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Answer provided by: [email protected] (10/8/2014)

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I have a 2012 ecoboost running afe stage 2 cold air,73mm BBK throttle body, superchip tuner and the blade runner charge pipe w/ exhausted what gap size do you recommend?

Asked by: TopNotch - 3/28/2015

Because you're running a tune, you should gap these down to .030", though since your modifications and tuning are fairly basic, you may want to consider using the NGK 6509s which are in the factory heat range.

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Answer provided by: [email protected] (3/30/2015)

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I have a 2013 ecoboost with banks monster exhaust, banks ram air cai, and banks tuner. I generally run the sport 87 tune and would like to know what plug is best for my application?

Asked by: jmerrell - 7/4/2015

Since you're not custom tuned, you ought to use the NGK 6509s or save some cash and use the Motorcraft SP-534s. Just make sure they're gapped down to .030" out of the box.

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Answer provided by: [email protected] (7/6/2015)

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I have a 5 star tune on an SCT X4, 73mm throttle body, afe stage 2 cai, SW cat back and down pipes, TurboSmart BOVs, afe charge pipe, and am planning for afe hot side pipes and intercooler. Would this warrant stepping down to the 6510 plugs, or should I stick to the 6509?

Asked by: Dave Flint - 12/5/2015

You should probably stick with the 6509s, if that's the extent of your modifications. In general, you only need to go a step colder when you're using upgraded turbochargers, water-methanol kits, or nitrous.

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Answer provided by: [email protected] (12/7/2015)

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I have a 13 f150 fx4 with k an n cai ..charge pipe..catless mak downpipe flowmaster super10...sct 91 octane race tune should I opt for the factory heat range plugs or these? Where do you draw the line on getting an improvement from these plugs?

Asked by: Jesse - 6/2/2015

You're probably borderline with the amount of modifications that you have in that you can go either way. Generally, you can stick with the stock heat range, but the colder heat range plugs wouldn't be hurting you at all. Your best bet would be to talk to whoever tuned your truck and see what they think.

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Answer provided by: [email protected] (6/2/2015)

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I have stock spark plugs in my 2011 Ford F-150 FX-4 supercrew Ecoboost. I took it to the garage cause its missing after you step on it. They fixed the turbos and they said I should change the plugs too. I'm wondering if these are the right ones I'm looking for or not? I don't have any of the extra tuning or parts on my truck, but your products definitely got me interested. Thanks for your help

Asked by: Mike - 12/21/2015

If you don't have any other modifications on your truck, and you're not planning on getting aggressive with performance parts here in the near future, then your best bet would be to use either NGK 6509 or Motorcraft SP-534 spark plugs which are in the factory heat range, rather than these plugs which have a colder heat range than stock.

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Answer provided by: [email protected] (12/22/2015)

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Im running a 2011 Eco with a livernoise 93 custom tune, afe cai, and 4" exhaust. My tune claims upwards of 20-22psi of boost, am i in the range of needing the colder plugs or stick with factory? Also, what should they be gaped at for that high of boost?

Asked by: Aaron - 7/27/2015

Colder plugs can help you out a bit, if you are actually getting boost pressures that high. I would try to verify that number, though. Gap should be .030" for tuned applications.

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Answer provided by: [email protected] (7/27/2015)

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Livernois 91 performance tune, offroad downpipes, 4 inch solo exhaust, 160 thermostat. Should I run these or another?

Asked by: Tim Webber - 9/4/2015

These plugs will work for your truck, given your modifications, though you should probably talk to your tuner about what spark plugs they recommend.

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Answer provided by: [email protected] (9/8/2015)

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Will these spark plugs work for the Explorer Sport 3.5l Ecoboost? Thank you for all of the help.

Asked by: Trevor McDaniel - 3/9/2016

Technically, yes. These spark plugs will work with the 3.5L EcoBoost Explorers. However, just like the F150s, these spark plugs are a heat range colder than stock, and are really meant for use on fairly modified vehicles with aftermarket turbos, water-meth kits, etc. If your Explorer isn't modified or is just running basic bolt-ons and tuning, you'd probably be better off with NGK's 6509 Spark Plugs which are in the factory heat range.

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Answer provided by: [email protected] (3/10/2016)

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Just purchased the Phase 2 package for my 2014 ecoboost. Which plugs should I grab?

Asked by: Edward Corr - 3/22/2016

If you're using 5-Star's tuning, they actually recommend using Motorcraft SP-534s gapped to a maximum if .030". The better alternative to the 6510s would be the NGK 6509s, since your modifications aren't extreme enough to require a colder heat range.

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Answer provided by: [email protected] (3/22/2016)

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11-17 F150 3.5L EcoBoost NGK 6509 Iridium IX Spark Plugs

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2011-2017 F150 EcoBoost 3.5L NGK 6509 Iridium IX Spark Plugs (Set of 6) LTR7IX-11

6510-LTR7IX-11-ECO

Improved Spark with One Step Colder Heat Range than Stock

High-Quality Iridium Tip and Corrosion-Resistant Design

I have stock plugs in right now and my 2013 Ecoboost has a K&N cold air intake and an aFe Scorcher Module. Would these be the plugs I should put in and gap them at .30 or do you recommend something else?

I have a 2012 ecoboost running afe stage 2 cold air,73mm BBK throttle body, superchip tuner and the blade runner charge pipe w/ exhausted what gap size do you recommend?

I have a 2013 ecoboost with banks monster exhaust, banks ram air cai, and banks tuner. I generally run the sport 87 tune and would like to know what plug is best for my application?

I have a 5 star tune on an SCT X4, 73mm throttle body, afe stage 2 cai, SW cat back and down pipes, TurboSmart BOVs, afe charge pipe, and am planning for afe hot side pipes and intercooler. Would this warrant stepping down to the 6510 plugs, or should I stick to the 6509?

I have a 13 f150 fx4 with k an n cai ..charge pipe..catless mak downpipe flowmaster super10...sct 91 octane race tune should I opt for the factory heat range plugs or these? Where do you draw the line on getting an improvement from these plugs?

Im running a 2011 Eco with a livernoise 93 custom tune, afe cai, and 4" exhaust. My tune claims upwards of 20-22psi of boost, am i in the range of needing the colder plugs or stick with factory? Also, what should they be gaped at for that high of boost?

Livernois 91 performance tune, offroad downpipes, 4 inch solo exhaust, 160 thermostat. Should I run these or another?

Will these spark plugs work for the Explorer Sport 3.5l Ecoboost? Thank you for all of the help.

Just purchased the Phase 2 package for my 2014 ecoboost. Which plugs should I grab?

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