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NGK V-Power Spark Plug (99-06 4.0L Jeep Wrangler TJ)

Item J103339
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$2.99 (each)

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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Replacement Spark Plug
      • 45 Degree V-Power Center Electrode
      • OEM Approved Design
      • Ensures Fast Startup and Lower Emissions
      • Sold Individually
      • For 1999-2006 4.0L Jeep Wrangler TJ Models


      Superior Maintenance. Upgrade your weak, worn out spark plugs to keep your engine running smoothly and efficiently. Replace them with the NGK V-Power Spark Plugs for improved fuel efficiency, faster starts and lower emissions to ensure the reliable performance you seek.

      Reliable Construction. This NGK V-Power Spark Plug features a unique 45 degree V-Power center electrode for greater ignitability and increased performance. NGK uses pinpoint precision laser welds to reduce excess debris decreasing the required voltage to bridge the spark gap for a more efficient burn.

      Application. This NGK V-Power Spark Plug is designed specifically for use in 4.0L engines found in 1999-2006 Jeep Wrangler TJ and TJ Unlimited models. Sold individually.

      Fitment: 1999 2000 2001 2002 2003 2004 2005 2006 Details

      MPN# ZFR5N

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (11)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 11 customers

      • August 02, 2019

        4 2018 Wrangler - JS


        For the low cost of this spark plug from NGK, this is a great solution if you need a spark plug.

        Helpful (2)
      • May 22, 2019

        5 2000 Wrangler - RobinB

        spark plug

        I would recommend this spark plug to anyone. It has made a world of a difference in my jeep, performance and gas alone was so worth this.

        Helpful (2)
      • October 15, 2018

        5 2002 Wrangler - Chris

        Great value

        Going from almost burnt out spark plugs to to new ones made such a difference in how it runs and starts, and for the price you pay you're getting great quality plugs.

        Helpful (11)
      • August 01, 2018

        5 2000 Wrangler - JoeO

        new plugs

        smoothed the motor right out, old plugs a little toasted.

        Helpful (12)
      • May 30, 2018

        5 1999 Wrangler - Rattbird

        Fix'd my rough idle

        I was running Autolite spark plugs and had rough idle with them, now i put in these NGKs and jeep runs like new again.

        Helpful (12)
      • March 10, 2018

        5 2004 Wrangler - Jani

        Starts way Better

        I don't think my old spark plugs have ever been changed and my Jeep has almost 150k miles on it. The new plugs have dramatically changed how it starts. Before it always started but it kinda struggled. Now it springs to life with ease.

        Helpful (13)
      • January 26, 2018

        5 2004 Rubicon - DanielleS

        Great power

        Just what my ruby needed. My old ones were shot. Very pleased with them.

        Helpful (13)
      • November 25, 2017

        5 2007 Wrangler - VincentC

        Jeep Xj

        These plugs are excellent, you will notice crisper throttle response and a smoother idle.

        Helpful (13)
      • August 22, 2017

        5 2001 Wrangler - Roby

        NGK V-Power spark plugs

        Installed these in my 2001 TJ. Jeep runs great! At less than $2 apiece, you can't get a better plug for the money. Highly recommended

        Helpful (14)
      • October 03, 2016

        5 2003 Wrangler - kevroy


        The plugs were pre-gapped. No surprises going in. The old plugs were pretty worn so there is a noticeable increase in power. I'll buy them again 50,000 miles from now.

        Helpful (13)

      Questions & Answers (1 answers)

      1 Top Rated Question

      what gap setting is recommended for 2001 Wrangler / 4.0?

      • The recommended gap for the 4.0 TJ would be .035.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Spark plug

      Will It Fit My Wrangler

      • TJ Rubicon 2 Door - 03, 04, 05, 06
      • TJ Rubicon Unlimited 2 Door - 05, 06
      • TJ Wrangler 2 Door - 99, 00, 01, 02, 03, 04, 05, 06
      • TJ Wrangler Unlimited 2 Door - 04, 05, 06

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