Proper spark plugs for 99 4.0L ?
Senior Member
Joined: Feb 2011
Posts: 897
Likes: 2
From: NJ
Year: 2004 WJ, 1998 XJ
Model: Grand Cherokee(WJ)
Engine: 4.7 HO
It's not continuing a debate don't worry. Here the link. Link I misses the R when I typed it originally. Amazon.com: NGK (3459) ZFR5N V-Power Spark Plug, Pack of 1: Automotive
I've ran this twice now in my 01 and I've had no issue. But since I'm no engineer that's just experiences on MY jeep.
Different spark plugs do make a difference even amongst copper. All depends what kind of material their ground is and how much copper is actually in there. That's just like store brand cereal and name brand. Both need to meet FDA criteria however one uses less grains or makes it slightly less batter or cooks it less etc.
I've ran this twice now in my 01 and I've had no issue. But since I'm no engineer that's just experiences on MY jeep.
Different spark plugs do make a difference even amongst copper. All depends what kind of material their ground is and how much copper is actually in there. That's just like store brand cereal and name brand. Both need to meet FDA criteria however one uses less grains or makes it slightly less batter or cooks it less etc.
Different part numbers for 98's?
*Edit - Found it. NGK FR5-1
Last edited by rgr4475; Nov 16, 2014 at 10:39 AM.
Thread
Thread Starter
Forum
Replies
Last Post
jeefersjeepers
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
Nov 28, 2024 01:48 PM
neocracka
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
Mar 28, 2020 05:48 PM
CrazyDuck
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
9
Sep 30, 2015 06:37 PM
neocracka
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
Sep 5, 2015 06:50 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)