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 pcs NGK V-Power Spark Plugs for 2002-2012 Jeep Liberty 3.7L V6 - Engine Kit Set Tune Up

6 pcs NGK V-Power Spark Plugs for 2002-2012 Jeep Liberty 3.7L V6 - Engine Kit Set Tune Up

Product ID: 403601573

Details

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

🔥V-grooved electrode for faster ignition

🔧Cold-rolled threads for damage-free install

🛡️Triple gasket seal prevents gas leakage

S/.381

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Description

⚡ Ignite your Jeep’s potential with NGK V-Power – where power meets precision!

LEAK PROOF DESIGN - Five-rib insulator and triple gasket sealing virtually eliminate misfires and gas leaks.
PRECISION IGNITION - V-grooved nickel alloy center electrode delivers faster, more efficient combustion for peak performance.
UNMATCHED RELIABILITY - Cold-rolled threads and trivalent metal plating protect your engine from corrosion and seizing.
EFFORTLESS INSTALLATION - Corrosion-resistant plating ensures smooth, damage-free spark plug swaps every time.
OPTIMIZED FUEL EFFICIENCY - Solid copper core enhances heat dissipation and conductivity, boosting fuel economy and lowering emissions.

This 6-piece NGK V-Power Spark Plug set is engineered for 2002-2012 Jeep Liberty 3.7L V6 engines, featuring advanced corrosion-resistant plating, cold-rolled threads, and a unique five-rib insulator to prevent misfires. With a v-grooved nickel alloy electrode and solid copper core, these plugs deliver faster ignition, improved fuel economy, and reliable OE-quality performance trusted by racers and professionals alike.

Specifications

ASIN	B01N6UIB28
Brand	Sixity Auto
Brand Name	Sixity Auto
Compatible with Vehicle Type	Car
Core Material	Nickel
Customer Reviews	4.8 out of 5 stars 478 Reviews
Gap Size	0.04 Inches
Item Weight	0.66 Pounds
Manufacturer	Sixity Auto
Manufacturer Part Number	4024190487
Model	4024190487
Number of Items	1
Thread Size	M14x1.5
Top Material Type	Ceramic , Metal
Unit Count	6.0 Count
Vehicle Service Type	Car

Reviews

P**S

Spark plugs for Jeep Liberty 2011.

The spark plugs were perfect! My car was much better after change them. I do recommend the product and the seller. Fast delivery and great product! Thanks

15.01.2025

W**N

worked on my 2010 jeep liberty limited

genuine product no issues

7.10.2025

K**.

One quality

Genuine plugs

10.05.2026

C**I

Muy bueno

3xcelenr

26.03.2026

M**E

Fits 08 jeep liberty

Fits 08 Jeep Liberty 3.7l smooth idle and running good!

20.02.2025

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S/.381

Duties & taxes included

In stock

Sold byAmazon PeruDelivered 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 Peru.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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