Ate these counterfeit??

These spark plugs probably ARE counterfeits (very good fakes). I purchased another set from a national autoparts retailer and NGK dealer to compare against. They are almost identical with the exception of two key differences: 1. One of the individual box panels of the Amazon spark plugs reads "Assembled in Thailand." The box of the legit ones from the brick-and-mortar store reads "Made in Japan." 2. The spark plugs from Amazon are embossed "NGK" on the metal collar right above the washer. The embossing on the ones from the brick-and-mortar store reads "Japan." Do yourself a favor and purchase quality spark plugs from a legitimate source. By doing so you'll have the assurance you are installing parts that will perform (100K miles for real NGK spark plugs) and won't damage your vehicle.

Are they already gap?

Yes, iridium plugs are gapped at the factory due to the high potential of scratching the tips when trying to gauge the gaps. If you do want to double check the gaps prior to installation, don't use the coin measuring tool, but one that won't put pressure on the iridium tips.

This is original Ngk ?

Mine appeared to be after watching several videos on counterfeits. Then just to be sure, I called NGK USA customer service and gave them the plug number and lot number. They confirmed the lot number was valid. (This was all last year.) The NGK person asked me where I had purchased them and i told him Amazon. He stated that there were currently (again this was 2020) significant counterfeit issues on ebay purchased NGK Iridium plugs minimal issues on Amazon. Safest bet IMHO is to buy them from an auto parts retailer.

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NGK (5787-4PK) ILZKR7B-11S Laser Iridium Spark Plug, Box of 4

Product ID: 30527180

Details

Brand
NGK
Core Material
Iridium
Thread Size
14mm x 1.25mm
Top Material Type
Metal

⚡Laser welded Iridium tip for max spark

⛽Boosts fuel economy & lowers emissions

🛡️Triple gasket seal stops gas leaks

¥15711

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Ignite your drive with NGK’s laser precision spark plugs!

ENDURING LONGEVITY - Platinum disc on ground electrode extends plug life, reducing replacements and downtime.
CARBONIZATION DEFENSE - Longer insulator nose plus corrugated ribs prevent carbon buildup and flashover, ensuring consistent performance.
LEAK PROOF COMBUSTION - Triple gasket seal eliminates combustion gas leakage, maximizing engine efficiency and reliability.
PRECISION IGNITION POWER - Laser-welded Iridium electrode delivers unmatched durability and a sharper spark for faster starts and smoother acceleration.
CORROSION SEIZE RESISTANT - Trivalent metal plating guards against corrosion and seizing, keeping your engine running flawlessly mile after mile.

NGK’s ILZKR7B-11S Laser Iridium Spark Plugs combine cutting-edge laser-welded iridium tips and platinum electrodes to deliver superior ignitability, longer service life, and enhanced fuel efficiency. Designed with advanced insulator technology and triple gasket sealing, these plugs prevent carbon buildup and combustion leaks, ensuring faster starts, smoother acceleration, and reduced emissions. Ideal for a wide range of vehicles, they offer professional-grade durability and corrosion resistance for the discerning driver.

Specifications

ASIN	B01DMFGRZG
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#53,163 in Automotive ( See Top 100 in Automotive ) #342 in Automotive Replacement Spark Plugs
Brand Name	NGK
Compatible with Vehicle Type	Watercraft, all-terrain-vehicles, off-road-motorcycles, snowmobiles, street-cruiser-motorcycles, street-motor-scooters, street-sport-motorcycles, street-touring-motorcycles
Core Material	Iridium
Customer Reviews	4.5 4.5 out of 5 stars (1,069)
Global Trade Identification Number	00087295057872
Included Components	NGK (5787-4PK) ILZKR7B-11S Laser Iridium Spark Plug, Box of 4
Item Type Name	ILZKR7B-11S Laser Iridium Spark Plug, Box of 4
Item Weight	6.4 ounces
Manufacturer	NGK
Manufacturer Part Number	5787-4PK
Manufacturer Warranty Description	Manufacturer
Model Number	5787-4PK
Number of Items	4
OEM Equivalent Part Number	5787
Thread Size	14mm x 1.25mm
Top Material Type	Metal
UPC	087295057872 603996526402 087295457733
Unit Count	4 Count

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¥15711

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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