K Suspension Viper coli pak - JeepForum.com
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post #1 of 2 Old 07-11-2020, 10:13 AM Thread Starter
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2004 WJ 
Join Date: Oct 2019
Posts: 19
K Suspension Viper coli pak

I ordered ay K Suspension Viper coil pack kit (Rigg coil pack) going to install new plugs with it. I have had spark plug rgap recommedations from, .032 to .035. Anyone have a recommendation? Thanks

Teddy2 is offline  
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post #2 of 2 Old 07-12-2020, 01:54 AM
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2004 WJ 
Join Date: Jul 2014
Location: Durham
Posts: 341
.035 for 4.0, .040 for 4.7 per wjjeeps.

can't see what engine you have since you haven't filled out your WJ info on your profile but that kit appears to be for a 4.0. champion RC12MCC4 or NGK ZFR5N are best options, WJs prefer simplicity and old school engineering, so anything more than copper plugs are a waste of money.

04 WJ NV242, IRO 3in, bilsteins, IRO adj UCAs/LCAs/A arm, 265/75/16 Laufenn Xfit, 4.56 gears
coldspit47 is offline  

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