X4XZ Ignition Coil & Double Iridium Spark Plug Kit — 4-Coil/4-Plug Set for Honda/Acura (OE 30520R1AA01) — Long-Life, Low-EMI

The X4XZ UF672 ignition coil and 97390 double iridium spark plug kit is a direct-fit replacement set (4 coils + 4 plugs) engineered to restore reliable ignition for compatible Honda and Acura 4-cylinder engines.

This complete ignition kit replaces OE# 30520R1AA01 and C1823 and includes four ignition coils and four double iridium spark plugs. Designed to match or improve on original equipment, the components aim to deliver consistent spark delivery, reduced interference, and long service life. Before purchasing, confirm compatibility with your specific vehicle year and engine type.

How will these coils and plugs affect engine starting and idle?

Fresh ignition coils and iridium plugs help the engine fire consistently at startup and maintain a stable idle by providing a dependable, high-voltage spark. Replacing worn parts often reduces misfires and rough idling without complex tuning.

• OE-level fit for easy installation—no modification required.
• Double iridium plugs provide a consistent spark and long lifespan (up to ~100,000 km expected under normal conditions).
• Coils include ferrite noise suppression to reduce radio-frequency interference.

What vehicles does this kit fit and how do I confirm compatibility?

This X4XZ kit was produced to fit several Honda and Acura 1.8–2.0L L4 applications. Use the listed OE numbers and your vehicle’s VIN or owner’s manual to confirm exact fitment before ordering.

• Common compatible models: 2012–2015 Honda Civic 1.8L L4, 2016 Honda HR-V 1.8L L4, 2013–2015 Acura ILX 2.0L L4.
• Manufacturer OE references: UF672 + 97390; replaces 30520R1AA01, C1823, 2505-484835.
• Check the second main product image or your vehicle parts catalog to verify other compatible years or variants.

What are the construction and durability features of the plugs and coils?

The spark plugs use a double iridium electrode for stable firing and extended service life, while the ignition coils are built with heat-resistant plastics and stainless-steel internal springs. These design choices improve reliability across heat and vibration cycles common to daily driving.

• Double iridium electrodes resist wear and maintain consistent spark over long intervals.
• Thermoplastic coil connectors resist cracking from thermal cycling.
• Internal ferrite noise suppressor minimizes electromagnetic interference with vehicle electronics and radios.

Is installation straightforward and what support is provided?

Each kit is supplied complete with four coils and four plugs to replace the factory set; no instructions are included, but the parts are designed for bolt-on replacement. If you’re comfortable removing the engine cover and unplugging the coil packs, a basic DIY installation is achievable.

• Plug-and-play connectors match OEM mounting points and harness shapes.
• Recommended: use a torque wrench for correct spark plug torque and anti-seize where appropriate.
• X4XZ offers 24-hour customer service and a 1-year product warranty for installation or quality questions.

Who is this kit for? This ignition coil and double iridium spark plug kit from X4XZ is aimed at owners and technicians of compatible Honda Civic, HR-V, and Acura ILX models who need a cost-effective, OEM-replacement ignition solution. It suits DIY mechanics replacing multiple coils or plugs at once, service shops seeking a reliable aftermarket option, and drivers who want longer-lasting plugs and improved ignition dependability without changing engine management or hardware. Always verify fitment with your vehicle identification before purchase.