Has anyone had these for a while and did you have any problems since installing them? I have a GM 3.6 with COP and want to replace stock plugs.

I've had these for 2 years and I havnt had any problems after installing. Noticed a difference in performance and fuel economy

how do they work on a mustang 2012 v6 ?

Thank you for inquiry. Yes, this will work on 2012 Ford Mustang V6. Don't hesitate to contact us if we may further assist you.

What size socket wrench does this fit? When measured, it fell between 9/16" and 10/16"

There is no such thing as a 10/16" socket. I0/16" is 5/8". I use a 5/8" spark plug socket which has a rubber insert so the plug stays in the socket when taking out and installing. Saves a lot of trouble. Socket wrench is what you install the socket or extensions on which you will need.

Suggested torque for these in an aluminum cylinder head?

According to NGK, it depends on the plug's diameter: 18 mm 35 to 40N·m (3.5 to 4.0 kgm) 14 mm 25 to 30N·m (2.5 to 3.0 kgm) 12 mm 15 to 20N·m (1.5 to 2.0 kgm) 10 mm 10 to 12N·m (1.0 to 1.2 kgm) 8 mm 8 to 10N·m (0.8 to 1.0 kgm)

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NGK Spark Plug, NGK Iridium IX, 14 mm Thread, 0.984 in Reach, Tapered Seat, Stock Number 6509, Resistor, Each

Product ID: 81919183

Details

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

🔥Iridium tip for max durability

🔩14mm precision thread

🛡️Superior anti-corrosion tech

SAR 58

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Description

🔥 Ignite your drive with NGK Iridium IX – where precision meets power!

IRIDIUM POWER BOOST - Fine iridium tip delivers unmatched durability and consistent ignition for smoother rides.
PLUG PLAY UPGRADE - Easy installation with vehicle-specific fit, transforming throttle response and engine idle instantly.
CORROSION SEIZE PROOF - Advanced anti-corrosion and anti-seizing properties keep your spark plug reliable mile after mile.
ENGINE LONGEVITY CHAMPION - High melting point alloy resists wear, extending engine life under demanding conditions.
PRECISION FIT PEAK PERFORMANCE - 14mm thread and 0.984 in reach ensure seamless compatibility with high-performance engines.

The NGK Iridium IX spark plug features a 14mm thread and 0.984-inch reach with a tapered seat, engineered for high-performance engines. Its fine iridium tip offers exceptional durability and a high melting point alloy ensures resistance to corrosion and seizing. Designed for easy installation and reliable ignition, it enhances throttle response and engine smoothness, making it a top choice for motorcycle and automotive enthusiasts seeking lasting performance.

Specifications

ASIN	B001RLXDYQ
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#396,030 in Automotive ( See Top 100 in Automotive ) #59 in Automotive Performance Spark Plugs #2,182 in Automotive Replacement Spark Plugs
Brand	NGK
Brand Name	NGK
Compatible with Vehicle Type	Motorcycle
Core Material	Iridium
Customer Reviews	4.6 out of 5 stars 125 Reviews
Global Trade Identification Number	00087295065099, 00087295165096
Included Components	Per Item Description
Item Weight	0.05 Kilograms
Manufacturer	Auto Extra
Manufacturer Part Number	LTR6IX-11
Manufacturer Warranty Description	30 Days
Model Number	6509
OEM Equivalent Part Number	LTR6IX-11
Thread Size	14mm x 1.25mm
Top Material Type	Metal
UPC	087295165096 087295065099
Unit Count	1.0 Count
Vehicle Service Type	Motorcycle

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SAR 58

Duties & taxes included

In stock

Sold byAmazon KSADelivered 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 KSA.

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TrustScore 4.5 | 7,300+ reviews

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