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NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S)

NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S)

Best price now

$9.38at Partsgeek.comChecked 11 h ago

53% under what the other stores charge

Compared across 10 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $9.38 at Partsgeek.com (checked Nov 13, 2026).
  • Checked at 10 stores.

Our take on the NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S)

The NGK ILZKR7B-11S is an iridium-tipped spark plug sold in a box of four. It is a long-life plug with a fine iridium center electrode and a platinum-tipped ground electrode, built to hold its gap and spark quality far longer than standard nickel plugs. It fits a range of Honda and Acura V6 engines, including the 3.5L and 3.7L families listed for models such as the TL, TSX, MDX and RL. For a DIY tune-up it is a direct OE-grade replacement, and its main rivals are Denso iridium plugs and cheaper platinum plugs that wear faster.

Best forHonda and Acura V6 owners doing a scheduled tune-upDrivers who want a long service interval between plug changesDIYers replacing plugs with the OE-specified part
Pros
  • Iridium center electrode resists wear for a long service life
  • Platinum-tipped ground electrode keeps the gap stable
  • OE-grade part from a major original-equipment supplier
  • Pre-gapped and ready to install
  • Box of four covers a full V6 set
Cons
  • Iridium plugs cost more than standard nickel plugs
  • Only fits the listed Honda and Acura applications
  • Gap should still be checked before installation
  • Counterfeit NGK plugs circulate, so source matters

NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S) prices at every store

  • Newparts.comNew

    In stock

    $11.24+ $10.95 shippingChecked 11 h ago
    Visit Newparts.com
  • R&R ProductsNew

    In stock

    $19.95+ $14.00 shippingChecked 11 h ago
    Visit R&R Products
  • Partsgeek.comNew

    Availability unknown

    $9.38Checked 11 h ago
    Visit Partsgeek.com
  • P2R Power Rev RacingNew

    Availability unknown

    $13.79Checked 11 h ago
    Visit P2R Power Rev Racing
  • motorcycleid.comNew

    Availability unknown

    $14.76Checked 11 h ago
    Visit motorcycleid.com
  • Neobits.comNew

    Availability unknown

    $15.95Checked 11 h ago
    Visit Neobits.com
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $19.99Checked 11 h ago
    Visit Amazon
  • Spark Plugs DepotNew

    Availability unknown

    $31.82Checked 11 h ago
    Visit Spark Plugs Depot
  • Dykes MotorsNew

    Availability unknown

    $39.99Checked 11 h ago
    Visit Dykes Motors
  • Bills-Exhausts.comNew

    Availability unknown

    $147.75Checked 11 h ago
    Visit Bills-Exhausts.com

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NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S) price history

Lowest price we've seen: $9.38 on Nov 13 at Partsgeek.com. Tracked across 10 stores since Nov 13.

What reviewers say

Owners of Honda and Acura V6 models generally report smooth idle and clean running after fitting these plugs, and many treat them as the correct OE replacement. Complaints center on cost and on counterfeit plugs sold online.

What people mention
  • Ignition qualityPraisedOwners say the engine idles and revs more smoothly after replacing worn plugs with these.
  • LongevityPraisedThe iridium tip is described as lasting well past the interval of standard nickel plugs.
  • FitmentMixedBuyers note it fits only the listed Honda and Acura engines, so the part number must be checked.
  • CostCriticisedSome owners feel the iridium plugs are pricey next to standard plugs.
  • CounterfeitsCriticisedBuyers warn that fake NGK plugs appear on the market and packaging should be checked.

About the NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S)

This is a box of four NGK Laser Iridium Long Life spark plugs, part number ILZKR7B-11S. NGK makes spark plugs for automotive, motorcycle, marine and small engine applications.

The plugs are listed to fit a range of Acura and Honda vehicles, including the ILX, MDX, RL, TL, TSX, ZDX, Accord, Civic Si, CR-V and Crosstour. Check the fitment details below against your vehicle's year, model and submodel.

Brand
NGK
Part number
ILZKR7B-11S
Type
Laser Iridium Long Life spark plug
Quantity
Box of 4
Acura ILX
2013-2015 Base
Acura MDX
2010-2013 Base
Acura RL
2009-2012 Base
Acura TL
2009-2014 SH-AWD
Acura TSX
2009-2014 Base; 2012-2014 Special Edition
Acura ZDX
2010-2013 Base
Honda Accord
2008-2012 EX, EX-L, LX, LX-P, LX-S; 2011-2012 SE
Honda Civic
2012-2015 Si
Honda CR-V
2010-2014 EX, EX-L, LX; 2011 SE
Honda Crosstour
2012-2015 EX, EX-L

Questions and answers

Is this plug pre-gapped?
NGK ships it gapped for the listed applications, but the gap should be checked with a gauge before installation, since handling in transit can alter it.
How many plugs do I need for a V6?
A V6 needs six plugs, so a box of four covers only part of the engine. Order two boxes for a full set.
How does it compare with a standard NGK plug?
The iridium center and platinum ground tip resist wear far longer than a nickel plug, so it holds its gap and spark quality over a longer interval.
Does it fit my Honda or Acura?
It is listed for several 2009-2015 Acura V6 models and matching Honda applications. Confirm the ILZKR7B-11S part number against your engine before buying.
Should I replace the ignition coils at the same time?
Only if a coil is faulty. Plugs alone are the normal service item, and coils are usually replaced when they fail or show cracks.
Do I need a torque wrench to install them?
Yes. Iridium plugs use a light torque spec and an aluminum head strips easily, so tighten to the factory figure with a torque wrench.
Where is the NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S) cheapest?
At Partsgeek.com, for $9.38, 53% under what the other stores charge, as of our latest check.
Where can I buy the NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S)?
10 stores we checked sell it, including motorcycleid.com, Amazon, Partsgeek.com, Newparts.com, P2R Power Rev Racing.

Stores we've priced the NGK Laser Iridium Long Life Spark Plug Box of 4 (ILZKR7B-11S) at

  • Neobits.com deals and prices

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