Ignition Coil and Iridium Spark Plugs for Jeep Cherokee (2020-2021) 2.4L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2020-2021 Jeep Cherokee

What it Does: Replaces degraded factory coil-on-plug packs and worn spark plugs with heavy-duty copper-wound coils and laser-welded iridium plugs to restore proper combustion efficiency and engine response.

The Stock Cherokee Thermal Breakdown and Misfire Vulnerability

The 2.4L Tigershark engine operates with tight packaging and elevated cylinder head temperatures that accelerate thermal degradation in the factory ignition coils. Over time, internal epoxy breakdown and primary winding insulation failure lead to dielectric breakdown, spark scatter, rough idle, and intermittent misfire codes (P0300–P0304). Additionally, standard factory plugs suffer from electrode erosion, increasing spark gap resistance and placing excessive load on the secondary coil windings.

The Engineering Solution

This comprehensive service kit pairs high-conductivity internal copper windings with thermal-resistant thermoplastic coil boots to resist high under-hood heat cycles and prevent voltage arcing. The matched fine-wire iridium spark plugs feature high-melting-point electrodes that minimize voltage requirement, ensure consistent flame kernel propagation, and prevent fouling under variable load conditions.

Technical Specifications

Compatibility

• 2020 Jeep Cherokee (Altitude, Latitude, Latitude Plus, Limited, North, Sport, Trailhawk) 2.4L L4 Gas
• 2021 Jeep Cherokee (Altitude, Latitude, Latitude Lux, Latitude Plus, Limited, North, Sport, 80th Anniversary) 2.4L L4 Gas

The Jeep Trail-Ready Durability Standard

Engineered to handle sustained trail climbs, towing payloads, and harsh all-weather commuting without ignition breakdown, ensuring reliable starts and consistent torque delivery across rugged terrain.