Are these spark plugs copper ones?

It's been a while since installation. Seems they were copper core, but don't quote me on that please ! OEM type plug for my neighbor's 2006 Jeep Liberty 3.7L. I've always had good service from NGK plugs for many years now. Hope that helps.

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6 pc NGK V-Power Spark Plugs compatible with Jeep Liberty 3.7L V6 2002-2012

Product ID: 39786370

Details

Brand
Sixity Auto
Core Material
Copper
Thread Size
M14x1.5
Top Material Type
Ceramic Metal
Vehicle Service Type
Car Truck

⚡Patented V-cut nickel electrode for sharper spark

⛽Boosts fuel economy with efficient combustion

🔧Durable copper-grade design lasts 30,000-60,000 miles

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Description

⚡ Ignite your Jeep’s potential with every mile!

TRUSTED OEM QUALITY - Engineered by NGK, the world leader in spark plug innovation, for guaranteed compatibility and excellence.
PRECISION SPARK FOCUS - Patented V-cut electrode concentrates spark energy for fewer misfires and smoother rides.
FUEL SAVVY PERFORMANCE - Optimized combustion enhances fuel economy, saving you money on every mile.
LONG LASTING DURABILITY - Copper-grade construction ensures reliable ignition for up to 60,000 miles of peak performance.
EMISSION REDUCTION BOOST - Sharper spark and efficient burn reduce emissions, keeping your Jeep Liberty greener and cleaner.

This 6-piece set of NGK V-Power spark plugs is engineered specifically for Jeep Liberty 3.7L V6 models (2002-2012). Featuring a patented V-cut nickel electrode, these plugs deliver a focused spark that improves fuel economy and reduces misfires. Built with durable copper-grade materials, they offer reliable performance for 30,000 to 60,000 miles, ensuring your engine runs cleaner and more efficiently with OEM-level quality trusted worldwide.

Specifications

ASIN	B01N6UIB28
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#82,796 in Automotive ( See Top 100 in Automotive ) #525 in Automotive Replacement Spark Plugs
Brand Name	Sixity Auto
Compatible with Vehicle Type	Car, Truck
Core Material	Copper
Customer Reviews	4.8 4.8 out of 5 stars (503)
Gap Size	0.04 inches
Item Highlight	Patented V-cut nickel electrode concentrates spark for better fuel economy. 30,000-60,000 mile copper-grade value.
Item Weight	10.56 ounces
Manufacturer	Sixity Auto
Manufacturer Part Number	4024190487
Model Number	4024190487
Number of Items	6
Thread Size	M14x1.5
Top Material Type	Ceramic, Metal
Unit Count	6 Count

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฿3736

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered 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 Thailand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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