Ignition Coil & Iridium Spark Plugs for Ram 1500 & 1500 Classic (2011-2022) 5.7L 6.2L V8

High-Output Ignition Coil & Iridium Spark Plugs for 2011-2022 Ram 1500 & 1500 Classic (5.7L & 6.2L Hemi V8 / DS & DT)

Comprehensive Ignition Upgrade: This complete kit replaces aging factory ignition coils and standard spark plugs with high-energy coils and iridium-tipped plugs to restore proper combustion, eliminate misfires, and maximize fuel burn efficiency.

The Stock Ram 1500 Ignition Degradation Weakness

The factory ignition system on the 5.7L and 6.2L Hemi V8 engines is notorious for degradation under heavy load, high heat, and extensive mileage. Over time, OEM coil pack windings break down due to extreme engine bay thermal cycling, leading to voltage leaks and weak spark output. Coupled with standard copper or worn platinum plugs (requiring 16 total on both the 5.7L and 6.2L), this degradation manifests as rough idling, hesitation under acceleration, and noticeable power drops while towing, and reduced fuel economy. In severe cases, heat soak compromises the internal epoxy of the factory coils, directly causing cylinder misfires and triggering check engine lights under load.

The Engineering Solution

This upgraded ignition package directly addresses Hemi misfire and power-loss issues through enhanced electrical efficiency and superior material selection. The replacement ignition coils feature upgraded primary and secondary copper windings wrapped in high-dielectric epoxy, significantly reducing energy loss and ensuring consistent high-voltage delivery even under extreme engine bay temperatures. Paired with 16 performance iridium spark plugs—utilizing an ultra-fine iridium center electrode—this kit delivers a concentrated, high-intensity spark. Iridium's exceptionally high melting point prevents electrode erosion, ensuring a precise gap is maintained for optimized combustion dynamics. The result is a more complete fuel burn, stabilized idle, restored horsepower, and improved torque consistency throughout the RPM range.

Technical Specifications

Compatibility

• 2011-2022 Ram 1500 (5.7L V8 Hemi)
• 2021-2022 Ram 1500 TRX (6.2L V8 Supercharged Hemi)
• 2019-2022 Ram 1500 Classic (5.7L V8 Hemi)

The Ram Durability Standard

For trucks relied upon for heavy hauling, towing, or high-performance daily driving, maintaining optimal ignition health is non-negotiable. This complete coil and plug kit is designed to ensure the long-term reliability, fuel efficiency, and robust power delivery required for Hemi-equipped Ram platforms.

Common Questions

Will this ignition coil and spark plug kit fit my 2019-2022 Ram 1500 Classic?
Yes. It fits 2019-2022 Ram 1500 Classic models equipped with the 5.7L Hemi V8 (DS chassis), as well as 2011-2022 Ram 1500 5.7L V8 and 2021-2022 Ram 1500 TRX 6.2L V8 trucks.

Does this kit work on the Pentastar V6 Ram 1500?
This kit is engineered specifically for the 5.7L and 6.2L Hemi V8 engines.

How many spark plugs are included in the box?
The package includes 16 iridium spark plugs along with the matching high-output ignition coils to service all 8 cylinders on dual-plug Hemi V8 engines.

Which factory part numbers do these ignition coils replace?
These coils directly replace OEM and aftermarket part numbers CUF504, UF-504, 56029129AA, 56029129AB, and 68060346AA.

How does this upgrade help with Hemi misfires under load?
The coils use upgraded primary and secondary copper windings sealed in high-dielectric epoxy to resist engine bay heat soak, while the ultra-fine iridium center electrodes maintain a precise spark gap for consistent voltage delivery.