KAX Ignition Coils & Spark Plugs Set for 5.7L HEMI Dodge Ram 1500 — Direct-Fit, Magnetic-Socket Plugs

KAX Ignition Coils & Spark Plugs Set is a direct-fit replacement kit for 5.7L HEMI engines, designed to restore reliable ignition, smoother idle, and consistent spark across compatible Dodge, Chrysler, Jeep, and Ram models.

If your 5.7L HEMI-powered vehicle is showing misfires, rough idle, or diminished throttle response, replacing worn ignition coils and spark plugs with a matched kit can resolve common ignition issues. This KAX set is engineered to match OEM dimensions and electrical characteristics so installation is straightforward and performance is predictable. It includes magnetic-socket-equipped plugs for easier handling and a coil pack design that connects directly to factory harnesses.

Will this kit fit my 5.7L HEMI vehicle?

Yes — the KAX set is built to match OEM specifications for a broad range of 5.7L HEMI models. Always cross-check part references and your vehicle’s year and engine code before purchase to ensure compatibility.

• Chrysler: 2009–2023 300 5.7L (except 2013), 2009 Aspen GAS
• Dodge: 2009–2023 Charger 5.7L; 2011–2023 Durango 5.7L GAS; 2009–2022 Challenger 5.7L; 2009–2010 Ram 1500/2500 5.7L; 2009 Ram 3500 5.7L
• Jeep & Ram: 2009–2023 Grand Cherokee 5.7L; 2022–2023 Wagoneer 5.7L; 2021–2023 Grand Cherokee L 5.7L; Ram 2011–2022 1500 5.7L; 2019–2023 1500 Classic 5.7L; 2011–2018 2500/3500 5.7L
• Reference numbers matched: 92145, LZFR5CI11, 9055, 9673, 8162, REC12WMPB5 and others listed by OEM cross-reference

How easy is installation for a DIYer or a technician?

Installation is designed to be plug-and-play: coils map to factory harnesses and spark plugs meet factory reach and thread specs. Basic hand tools and a 3/8" ratchet are usually sufficient, and the magnetic plug socket helps keep components secure during installation.

• Direct-fit design: no custom wiring or modification required
• Tool compatibility: universal 3/8" drive works with standard ratchets
• Magnetic tip: holds spark plugs for safer, easier insertion
• Anti-slip hex: reduces rounding when tightening or removing plugs

What specific features improve reliability and handling?

The kit combines coils and plugs that match electrical and mechanical requirements for the 5.7L HEMI, reducing the chance of misfires and improving ignition consistency. Materials and fitment focus on damping vibration and maintaining secure electrical connection under engine heat and load.

• OEM-spec coil housing and terminals for secure electrical contact
• Spark plugs with correct reach, heat range, and electrode geometry
• Magnetic socket reduces dropped parts and speeds installation
• Anti-slip features protect the plug hex during removal or installation

What maintenance improvements can I expect after replacing coils and plugs?

Replacing worn ignition components commonly restores smooth idle, reduces hesitation, and improves throttle response. While results depend on overall engine condition, a matched coil-and-plug replacement is one of the most direct ways to address ignition-related drivability issues.

• Reduced engine misfires and rough idle when compared to worn components
• More consistent spark timing across all cylinders
• Potential for improved fuel burn efficiency and responsiveness
• Easier future servicing thanks to magnetic socket and clear OEM fit

Who is this for: The KAX Ignition Coils & Spark Plugs Set is aimed at owners and technicians working on 5.7L HEMI Chrysler, Dodge, Jeep, and Ram models who want a direct-fit, OEM-spec replacement solution. It suits DIY mechanics who prefer straightforward installation with helper features (magnetic socket, anti-slip hex), as well as professional shops that need reliable parts that match factory fitment and reference numbers.