2018-2025
2007-2018
1997-2006
1987-1995
1976-1986
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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RC12LYC Spark Plug (87-98 2.5L or 4.0L Jeep Wrangler YJ & TJ)Find parts that fit my vehicle
Item J136545Wrangler Sales Tech
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
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1 Reviews
Our Price
$6.99 each
Ship to: 43215
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Replacement Spark Plug
- Ensures Peak Engine Performance
- With a Copper Electrode Core
- Features a Nickel alloy Electrode Tip
- Quick and Easy Installation
- Sold Individually
- Works with all Models of the 1987-1998 2.5L or 4.0L Jeep Wrangler YJ and TJ
Description
Reliable Ignition All the Time. Ensure reliable ignition every time you rev your Wrangler's engine with this RC12LYC Spark Plug. Manufactured to directly replace a faulty stock spark plug, this item will make sure you're getting the best performance and fuel efficiency out of your Jeep’s engine.
Premium Materials and Build Quality. This spark plug uses a copper electrode core and a nickel alloy electrode tip for durability, resistance to corrosion, and consistent fuel burning. Since it's made to OEM specifications, expect a similar or even longer service life compared to the stock component it replaces.
Direct Installation. Mounting directly, installation of this spark plug should pose no problem to someone with some mechanical skills and know-how. This easily installs using common hand tools found in the garage and the installation process should only take less than an hour, so you’re back behind the wheel in no time.
Application. This RC12LYC Spark Plug is designed as a direct replacement for the stock spark plug on all models of the 1987-1998 2.5L or 4.0L Jeep Wrangler YJ and TJ.
Fitment:
- 1987 Jeep Wrangler
- 1988 Jeep Wrangler
- 1989 Jeep Wrangler
- 1990 Jeep Wrangler
- 1991 Jeep Wrangler
- 1992 Jeep Wrangler
- 1993 Jeep Wrangler
- 1994 Jeep Wrangler
- 1995 Jeep Wrangler
- 1997 Jeep Wrangler
- 1998 Jeep Wrangler
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Spark Plug
5.0
Customer Reviews (1)
Review Summary
Installation Time: Less than 1 Hour
Aug 20, 2020
1998 Wrangler - JackSmall
Installation Time: Less than 1 Hour
Tune it up
easy tune up, parts were all perfect. quick install.
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Reviews of similar Ignition products have an average rating of 4.8 out of 5
Mar 25, 2025
Review shared from Iridium Spark Plug (12-18 3.6L Jeep Wrangler JK)
2014 - TomB
Easy
Very easy install work as they should always a great name brand
Mar 19, 2025
Review shared from Distributor (98-99 4.0L Jeep Wrangler TJ)
1999 Wrangler -
Distributor
Perfect fit easy installation. Works perfectly increased efficiency.
Jan 28, 2025
Review shared from Distributor (94-97 2.5L Jeep Wrangler YJ & TJ)
1994 Wrangler - YJ007
Awesome
Fits perfectly. And as long as you know what you’re doing it doesn’t take long to install.
Jan 13, 2025
Review shared from Spark Plug (83-90 Jeep CJ5, CJ7 & Wrangler YJ)
1988 Wrangler - BrianS
Perfect
Exactly as described. Quick shipment - great quality.
Jan 10, 2025
Review shared from Iridium Spark Plug (12-18 3.6L Jeep Wrangler JK)
2016 Wrangler - BlackBearJC
Sparked up
Exactly what I ordered and the shipping speed was good. Champion plugs are the best option for the 3.6L.
Nov 25, 2024
Review shared from Battery Tray (91-95 Jeep Wrangler YJ)
1994 Wrangler - Fastwoodracer
Great Product
Well built. Easy Install. Should last my lifetime.
Sep 17, 2024
Review shared from Alternator; 160 Amp (12-18 3.6L Jeep Wrangler JK)
2014 Wrangler - Buffalo23
works
Great price delivered quick..Easy install works great.
Sep 9, 2024
Review shared from Iridium Spark Plug (12-18 3.6L Jeep Wrangler JK)
2015 Wrangler - Rooster389
Very satisfied
Replaced coil packs plugs and fuel injectors. Gained 1.5 mpg. Also gained back lost power.
Jun 28, 2024
Review shared from Iridium Spark Plug (12-18 3.6L Jeep Wrangler JK)
2017 Wrangler - 17WranglerJKU
Champion Iridium Spark Plug
These spark plugs are direct replacement for the OEM plugs on my 3.6L Wrangler engine. They worked great for the completion of a tune up.
Jun 26, 2024
Review shared from Starter Motor; for use with Manual Transmission (03-06 4.0L Jeep Wrangler)
2005 Wrangler - ChaseD
Starter
Awesome starter for money will buy again if it last 20 years like the last
Questions & Answers
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Will It Fit My Wrangler
- TJ Wrangler 2 Door - 97, 98
- YJ Wrangler 2 Door - 87, 88, 89, 90, 91, 92, 93, 94, 95
