Product Description
These Are A Set Of Direct Replacement Champion Spark Plugs For The 4.2 Liter Engine On A Grand Wagoneers & Full Size Jeep.
These Spark Plugs Were Specifically Designed To Work On The 4.2 Liter Engines & Are Correct & Will Fit & Work On All Jeep Grand Wagoneers & Full Size Wagoneers & Cherokees & The Jeep J10 & J20 Pick-Up Trucks With The 4.2 Liter Engine From 1981-1988.
This Set Of Spark Plugs Will Only Come As A Complete Set Of 6-Spark Plugs.
If Your Engine Is Starting To Misfire & The Ignition Wires & Or The Distributor Cap Are Worn & Need Replacing-You May Also Need To Replace The Spark Plugs Again.
If Your Engine Keeps Flooding From Cold Weather Starts-Your Spark Plugs May Also Be Gas Fouled & May Require Attention As Well.
These Spark Plugs Should Be Replaced Every 15,000 Miles If Possible Or Every 2-Years If Rarely Driven.
Extreme Cases Require Different Replacements But Tuning This Particular AMC 4.2 Liter Engine Will Pay Itself In Gas Mileage & Performance.
These Spark Plugs Were Made In The U.S.A.
REPLACES SPARK PLUG PART# RFN14LY
4.2L SET OF 6 SPARK PLUGS PART# RNN14LY
