X4XZ ignition coil and double iridium spark plug kit — 4 coils & 4 plugs for Honda/Acura 1.8L–2.0L (OE 30520R1AA01, C1823)

Complete ignition kit: four X4XZ UF672 ignition coils paired with four 97390 double iridium spark plugs engineered as direct OE replacements for smoother starts and reliable engine performance.

This X4XZ kit replaces worn ignition components on compatible Honda and Acura 4-cylinder engines, restoring consistent spark delivery and combustion efficiency. Each ignition coil is built with durable materials and an internal ferrite noise suppressor to reduce interference, while the double iridium spark plugs deliver a longer service life and stable ignition. The set is intended as a direct-fit replacement for OE part numbers 30520R1AA01 and C1823, and it includes four coils and four plugs for an entire bank refresh.

Which vehicles are compatible with this ignition kit?

These coils and plugs are specified for several Honda and Acura models with 1.8L and 2.0L L4 engines. Always verify fitment by comparing the OE part numbers to your vehicle's existing components before purchasing.

• Compatible with: 2012–2015 Honda Civic 1.8L L4
• Compatible with: 2016 Honda HR-V 1.8L L4
• Compatible with: 2013–2015 Acura ILX 2.0L L4
• Check the included vehicle list image and your OEM part numbers (30520R1AA01, C1823) for exact fit

How do these ignition coils and double iridium plugs improve engine performance?

The ignition coils are designed to match or exceed OE electrical output and withstand thermal cycling, giving stable high-voltage transfer to each spark plug. Double iridium plugs maintain a consistent spark for longer intervals, which helps with smoother idling and steadier throttle response under normal driving conditions.

• Stable spark reduces misfires and rough idle
• Improved cold-start reliability compared with worn plugs
• Durable materials resist heat and mechanical stress
• Noise suppressor minimizes radio frequency interference

What are the durability and quality features of the parts?

The plugs use double iridium electrodes for extended service life—rated for long mileage—while the coils include a stainless-steel spring, thermoplastic connector, and internal ferrite core for durability and reliable electrical transfer. Materials and construction are chosen to provide longevity and repeatable performance in daily driving environments.

• Double iridium plug life rated up to extensive mileage
• Stainless-steel spring and ferrite suppressor in coils
• Thermoplastic connector resists heat-related fractures
• Engineered as OE-equivalent fit and function

How easy is installation and what is included in the package?

The kit is sold as a complete set of four ignition coils and four double iridium spark plugs, designed for straightforward replacement without modification. No printed manual is provided, but the parts match OE layouts so familiar users or professional installers can complete the swap with common hand tools.

• Package includes: 4 ignition coil packs and 4 double iridium spark plugs
• OE cross-references: UF672 + 97390; Replace# 30520R1AA01, C1823, 2505-484835
• Installation: direct-fit, no special adapters required
• Manufacturer support: 24-hour customer service and 1-year product coverage

Who is this for: Drivers or technicians maintaining late-model Honda Civic, HR-V, or Acura ILX 4-cylinder engines who need a full-bank ignition refresh. This X4XZ kit suits anyone replacing old, fouled, or failing coils and plugs to restore reliability, improve drivability, and reduce the risk of misfires. If you require exact vehicle fitment, confirm your vehicle year and OEM part numbers before purchase.