These fit 1999 Jeep Cherokee Sport w/ 4.0 6cy.

I would say yes. Mine is a 2005 sport TJ. 4.0 L6. I would think all 4.0 take the same plug, some other components will probably be different.

Do they fit a 2000 Jeep Wrangler sport?

NGK (3459) ZFR5N V-Power Spark Plug for 2000 Jeep Wrangler Sport

Will fix 2001 jeep 6cyl

They will, these are the one’s I bought for my 2001 TJ 4.0L.

What is the Ngk part # for these plugs?

I have a 2003 Motorhome with a 496 (beefed up 454) the manual said to use plug part number NGK-V, there are cross references to Champion, Autolite, etc. But these are a exact fit, some plugs run hotter and some colder, so use what the manual suggests if you have one.

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Sixity Auto 6 pc NGK V-Power Spark Plugs compatible with Jeep TJ 4.0L L6 1997-2006

Product ID: 549971610

Details

Brand
Sixity Auto
Core material
Alloy
Thread size
10mm x 1.25mm
Top material type
Metal
Vehicle service type
Jeep TJ 4.0L

⚡Advanced V-groove spark tech

⏱️30,000 mi OE recommended service interval

🛡️Trivalent metal anti-corrosion plating

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€ 99.39

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Ignite your Jeep’s legacy with Sixity Auto’s precision spark plugs!

ENHANCED SPARK EFFICIENCY - Advanced V-groove design with high-performance nickel electrode maximizes spark development for smoother starts and better fuel combustion.
CONSISTENT LONG TERM SERVICE - Designed to meet a 30,000-mile manufacturer recommended service interval, keeping your Jeep TJ running strong mile after mile.
DURABILITY MEETS RELIABILITY - Trivalent metal plating offers superior resistance to corrosion and seizing, extending plug life and reducing maintenance hassles.
ECONOMICAL PERFORMANCE UPGRADE - Genuine NGK equivalent parts deliver OE-level quality at a fraction of the cost, perfect for maintaining older vehicles without compromise.
PRECISION FIT FOR JEEP TJ 4 0 L L 6 - Engineered specifically for 1997-2006 Jeep TJ models to ensure seamless compatibility and peak performance.

Sixity Auto’s 6-piece NGK V-Power spark plugs are tailor-made for Jeep TJ 4.0L L6 models (1997-2006), featuring advanced V-groove nickel electrodes and trivalent metal plating for superior spark efficiency and corrosion resistance. With a precise 0.036" gap and a 30,000-mile service interval, these plugs deliver reliable, economical performance that keeps your classic Jeep firing on all cylinders.

Specifications

ASIN	B01N14INC7
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#33,563 in Automotive ( See Top 100 in Automotive ) #128 in Automotive Performance Spark Plugs
Brand	Sixity Auto
Brand Name	Sixity Auto
Compatible with Vehicle Type	Jeep TJ 4.0L L6
Core Material	Nickel-Chromium Alloy
Core material	Nickel-Chromium Alloy
Country of Publication	Japan
Customer Reviews	4.7 out of 5 stars 405 Reviews
Gap Size	0.04 Inches
Item Weight	0.66 Pounds
Manufacturer	Sixity Auto
Manufacturer Part Number	4024180432
Model Number	4024180432
OEM Equivalent Part Number	NGK 4024180432
Thread Size	10mm x 1.25mm
Thread size	10mm x 1.25mm
Top Material Type	Metal
Top material type	Metal
Unit Count	6 Count
Vehicle service type	Jeep TJ 4.0L L6

Reviews

M**E

all is ok

30.11.2025

F**Y

Plugs

19.12.2025

G**F

Spark Plugs

25.03.2026

J**E

Yes

13.08.2025

D**S

No gap adj needed

1.08.2025

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