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

Product ID: 515510958

Details

Brand
Sixity Auto
Core material
Ceramic &
Thread size
M14x1.5
Top material type
Metal
Vehicle service type
Jeep Liberty

⏳30,000+ Mile OE Recommended Service Interval

⚡Advanced Iridium Electrodes for Superior Spark

🛠️Precision M14x1.5 Thread Size for Perfect Fit

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Description

⚡ Ignite Your Jeep’s Potential with Sixity Auto Spark Plugs!

TRUSTED OEM QUALITY - Genuine NGK parts guarantee factory-level reliability and peak engine efficiency.
DURABILITY THAT LASTS - Robust ceramic and metal housing protects against wear, reducing misfires and faults.
ECO FRIENDLY PERFORMANCE - Reduces emissions and fire faults, keeping your engine cleaner and greener.
UNMATCHED IGNITION POWER - Experience faster, stronger combustion with NGK’s cutting-edge electrode design.
TAILORED FOR JEEP LIBERTY - Perfectly engineered for 3.7L V6 models (2002-2012) ensuring seamless compatibility.

Sixity Auto’s 6-pack NGK V-Power Spark Plugs are precision-engineered for Jeep Liberty 3.7L V6 models (2002-2012). Featuring advanced iridium electrodes and a durable ceramic-metal build, these plugs deliver enhanced ignition efficiency, reduced emissions, and a recommended service life of over 30,000 miles. OEM quality ensures perfect fit and reliable performance, making them the go-to upgrade for Jeep enthusiasts seeking lasting power and cleaner combustion.

Specifications

ASIN	B01N6UIB28
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#104,493 in Automotive ( See Top 100 in Automotive ) #596 in Automotive Performance Spark Plugs
Brand Name	Sixity Auto
Compatible with Vehicle Type	Jeep Liberty
Core Material	Ceramic & Iridium
Country of Publication	USA
Customer Reviews	4.8 4.8 out of 5 stars (467)
Gap Size	0.04 Inches
Item Weight	299 g
Manufacturer	Sixity Auto
Manufacturer Part Number	4024190487
Model Number	4024190487
Thread Size	M14x1.5
Top Material Type	Metal
Unit Count	6 Count

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€ 79.52

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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