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.

ASIN	B01N14INC7
Best Sellers Rank	#2,883 in Automotive ( See Top 100 in Automotive ) #10 in Automotive Performance Spark Plugs
Brand	Sixity Auto
Customer Reviews	4.7 4.7 out of 5 stars (398)
Date First Available	3 April 2023
Item Weight	299 g
Item model number	4024180432
Manufacturer	Sixity Auto
Manufacturer Part Number	4024180432
OEM Part Number	NGK 4024180432
Product Dimensions	9.4 x 2.39 x 12.65 cm; 299.37 g

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

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