SYKRSS Ignition Coil & Iridium Plug Kit, 8 Coils + 16 Plugs for 5.7L HEMI V8 (2008–2024) — OEM Fit, Pre-Gapped

SYKRSS Ignition Coils (8Pack) and Premium Iridium Spark Plugs (16Pack) are a complete drop-in replacement kit engineered to restore reliable ignition and smooth running for 5.7L HEMI V8 engines.

This all-in-one kit bundles eight direct-replacement ignition coils and sixteen pre-gapped iridium spark plugs designed specifically for many Chrysler, Dodge, Jeep, and Ram models with the 5.7L V8 between 2008 and 2024. Built to meet or exceed factory fitment and durability, the components are engineered to resist heat, prevent voltage leakage, and provide a strong, focused spark—helping correct misfires and regain throttle response. The set ships with an installation guide and includes a VIN check recommendation to confirm exact year/plant compatibility.

Which vehicles will this SYKRSS kit fit?

This kit targets 5.7L HEMI V8 applications across multiple Chrysler-FCA platforms. Fitment covers many model years of Chrysler 300, Dodge Challenger, Charger, Durango, Ram 1500/2500/3500, Jeep Grand Cherokee and others—though some years depend on the factory plant and VIN code.

• Fits 5.7L HEMI V8 models from 2008–2024 as listed in product details.
• Includes both coils and 2 plugs per cylinder so you replace all ignition components at once.
• Free VIN check recommended to confirm applicability for certain model years and plants.

How do these coils and plugs improve engine behavior?

The ignition coils use silicon-steel cores, high-pressure boots, and epoxy sealing to reduce heat-related failures and voltage leaks. The iridium spark plugs have ultra-fine tips for a concentrated spark, which helps combustion stability, throttle response, and fuel efficiency without altering engine tuning.

• Stronger, more focused spark for improved combustion consistency.
• Robust insulation and materials to resist cracking and leakage.
• Pre-gapped plugs ensure correct electrode spacing for the targeted engines.

Will this kit fix misfires and a rough idle?

Replacing all ignition coils and spark plugs at once eliminates worn or failing components that commonly cause misfires, rough idle, hesitation, stalling, and uneven acceleration. While electrical or fuel-system faults require separate diagnosis, this complete kit addresses the most frequent ignition-related causes.

• Replaces all coils and plugs to prevent cylinder-to-cylinder variation.
• Restores consistent firing across the RPM range when ignition is the root cause.
• Helps clear ignition-related trouble codes when the hardware is the issue.

How difficult is installation and what warranty/support is included?

Designed as direct OEM replacements (compatible with common part numbers like UF504 and LZFR5CI-11), the coils and plugs install without modifications using standard hand tools. Most DIYers can complete the swap in about 40 minutes; the kit includes an installation guide and a 1-year standard protection plan for peace of mind.

• Drop-in fit for designated OEM part numbers—no special adapters required.
• Complete kit includes 8 coils, 16 pre-gapped iridium plugs, and instructions.
• 1-year standard coverage and customer support for installation questions.

Who is this for: This SYKRSS kit is aimed at owners, mechanics, and DIY enthusiasts with 5.7L HEMI V8 vehicles who want a full ignition refresh—especially those experiencing misfires, reduced throttle response, or routine maintenance intervals. It’s ideal when you prefer replacing all ignition components at once to ensure consistent performance across every cylinder and to avoid future intermittent faults caused by aging coils or worn plugs.