Jeep Spark Plugs | Quadratec

A spark plug, or sometimes simply called a plug, delivers the electric current from your Jeep's ignition system to the combustion cylinder to ignite the compressed fuel / air mixture. A spark plug consists of a metal threaded shell, electrically isolated from a central electrode by a porcelain insulator. It is connected to the ignition system with a spark plug wire.

The correct spark plug is critical to your engine operating at it's peak efficiency and delivering the highest power output. If you've made performance upgrades to your engine, a different spark plug may be necessary to accommodate the increased power output.

Mopar Spark Plug for 18-26 Jeep Wrangler JL with 2.0L Engine

Crown Automotive Spark Plug for 81-90 Jeep CJ & Wrangler YJ, 84-90 Cherokee XJ & Comanche MJ and 81-90 SJ & J-Series

Crown - 10% Off everything

Crown Automotive Spark Plug for 78-80 Jeep CJ-5, CJ-7, SJ and J-Series with 4.2L Engine

Crown - 10% Off everything

E-3 Diamond Fire Spark Plug for 59-66 CJ Vehicles

E-3 Diamond Fire Spark Plug for 14-22 Jeep Cherokee KL & 08-22 Grand Cherokee WK

E-3 Diamond Fire Spark Plug for 12-21 Jeep Grand Cherokee WK2 SRT & 22-26 Wrangler JL Rubicon 392 with 6.4L

Crown Automotive Spark Plug for 2003 Jeep Wrangler TJ and 02-03 Liberty KJ with 2.4L Engine

Crown - 10% Off everything

Crown Automotive Spark Plug for 14-18 Jeep Grand Cherokee WK with 5.7L Engine

Crown - 10% Off everything

Mopar Spark Plug for 10-13 Jeep Grand Cherokee WK2 with 5.7L

Mopar Spark Plug for 08-09 Jeep Grand Cherokee WK & Commander XK with 4.7L Engine

Mopar Spark Plug for 06-10 Jeep Grand Cherokee WK with 6.1L

Crown Automotive Spark Plug for 99-06 Jeep Wrangler TJ & Unlimited; 99-01 Cherokee XJ and 99-04 Grand Cherokee WJ

Crown - 10% Off everything

Mopar Spark Plug for 12-22 Jeep Grand Cherokee WK2 & Wrangler JL Unlimited 392 with 6.4L

Mopar Spark Plug for 05-06 Wrangler TJ with 2.4L

Crown Automotive Spark Plug for 05-08 Jeep Grand Cherokee WK and 06-08 Commander XK with 5.7L Engine

Crown - 10% Off everything

Crown Automotive Spark Plug for 87-90 Jeep Cherokee XJ and Comanche MJ with 4.0L Engine

Crown - 10% Off everything

Crown Automotive Spark Plug for 94-96 Jeep Grand Cherokee ZJ with 5.2L Engine

Crown - 10% Off everything

Crown Automotive Spark Plug for 99-07 Jeep Grand Cherokee WJ & WK and 06-07 Commander XK with 4.7L Engine

Crown - 10% Off everything

Crown Automotive Spark Plug for 07-17 Jeep Compass and Patriot MK with 2.0L or 2.4L Engine

Crown - 10% Off everything

Crown Automotive Spark Plug for 06-10 Jeep Grand Cherokee WK with 6.1L Engine

Crown - 10% Off everything

OMIX Spark Plug Well Gasket for 18-26 Jeep Wrangler JL & Gladiator JT with 3.6L Engine

Temporarily Out Of Stock