GDUKOP Ignition Coil & Iridium Plug Kit — Set of 8 Coils + 16 Plugs for 5.7L HEMI, Direct-Fit

GDUKOP UF504 set combines eight direct-fit ignition coils with sixteen iridium spark plugs engineered to restore reliable spark, smoother idle, and improved throttle response for 5.7L HEMI Chrysler, Dodge, Jeep and Ram engines.

This complete ignition service kit replaces worn coils and plugs in compatible 5.7L V8 models, using OE-referenced part numbers (UF504, C1526, 5C1569, 5602129AA) to ensure proper fit and electrical performance. Designed for drivers and technicians who need a dependable, long-lasting replacement, the set focuses on consistent combustion, reduced misfires, and extended service intervals courtesy of iridium electrode technology.

Why choose this coil and iridium plug set for my 5.7L HEMI?

This kit pairs coils matched to factory electrical specifications with iridium plugs that require less voltage to ignite, which helps restore lost performance from aged ignition components. Together they reduce misfires, stabilize idle, and help the engine run closer to original factory behavior.

• Includes 8 coils and 16 iridium plugs for a full-cylinder replacement.
• OE part numbers provided for straightforward cross-referencing.
• Iridium plugs offer longer life and more consistent spark than standard plugs.
• Coils built for heat and vibration resistance to suit under-hood conditions.

How difficult is installation and what should I prepare?

Installation is straightforward for someone with basic mechanical skills and common hand tools; coils are a direct swap and plugs install like factory items. Expect moderate access work on intake-plenum-equipped engines—plan time for gap checking and torqueing to spec.

• Requires socket set, torque wrench, and spark plug socket with extension.
• Recommended to replace all coils and plugs at once for balanced performance.
• Check and set plug gaps if necessary; tighten plugs to manufacturer torque values.
• Allow engine to cool before service to avoid heat damage and burns.

Which vehicles and part numbers does this kit fit?

This GDUKOP set targets Chrysler-built 5.7L HEMI V8 applications across Dodge, Chrysler, Jeep, and Ram lines from model years listed below. Use OE numbers to confirm compatibility with your VIN or parts catalog.

• Dodge: 2009–2019 Challenger 5.7L, 2009–2020 Charger 5.7L, 2009–2019 Durango 5.7L, 2009–2010 Ram 1500/2500/3500 5.7L.
• Chrysler: 2009–2020 300 5.7L, 2009 Aspen 5.7L.
• Jeep: 2009–2010 Commander 5.7L, 2009–2019 Grand Cherokee 5.7L.
• Ram (later years): 2011–2019 1500, 2019–2020 1500 Classic, 2011–2018 2500 and 3500 5.7L.
• OE cross-references: UF504, C1526, 5C1569, 5602129AA for quick parts lookup.

What performance or longevity differences should I expect after replacing coils and plugs?

After a full replacement you'll typically notice improved start-up consistency, fewer misfires, steadier idle, and crisper throttle response—especially on engines that had worn ignition parts. Iridium plugs extend the interval between services compared with standard copper plugs, but regular inspection remains important.

• Better combustion stability, which can aid fuel economy under consistent driving.
• Reduced misfire codes and smoother engine operation when coils were failing.
• Iridium construction offers higher wear resistance and sustained ignitability.
• Durable coil housings resist heat and vibration for longer service life.

This GDUKOP UF504 coil and 16-iridium-plug kit is for vehicle owners, independent mechanics, and fleet technicians working on 5.7L HEMI applications who want a full, OE-referenced ignition refresh. It’s ideal when you’re troubleshooting misfires, restoring performance before a long trip, or simply performing scheduled maintenance to maintain factory-like operation.