UF603 Ignition Coil & 97390 Double Iridium Spark Plug Kit - Reliable

In this review the UF603 ignition coil and 97390 double iridium spark plug kit is evaluated for owners of specific Honda and Acura V6 and selected L4 vehicles who need a straightforward replacement that restores engine smoothness. This kit's single biggest selling point is that it pairs matched ignition coils with long-life double iridium spark plugs, which together address common symptoms such as engine misfire, rough idle, and poor fuel economy while promising easier installation and improved cold-start performance.

Key Features

• Direct fit compatibility: Designed to replace UF603 and 97390 OE parts for listed Honda and Acura models, reducing fitment guessing and simplifying installation.
• Matched coil and plug pairing: Supplying six ignition coils and six double iridium spark plugs together ensures consistent ignition performance across all cylinders for smoother running.
• Durable double iridium plugs: The spark plugs use double iridium construction for a longer working life and stable spark delivery, helping maintain performance up to 100000 kilometers under normal use.
• Noise suppression and connector strength: Coils include an internal ferrite noise suppressor and advanced thermoplastic connectors to resist heat cycling and reduce radio frequency interference.
• OE-equivalent design: Components either match or improve on OE design for straightforward installation and reliable cold-start performance.

Who It's For

This kit is best for Honda and Acura owners who need a full set replacement for ignition coils and spark plugs at once, especially those with Accord, Crosstour, Odyssey, RL, TL, and TSX models listed in the compatibility notes. It suits DIY mechanics who want a matched set to address misfires, rough idle, or a drop in power and who value longer-life iridium plugs.

Not ideal for drivers who cannot confirm vehicle fitment from the compatibility list or who prefer OEM-branded parts from a dealership; also not for vehicles outside the specific model years and engine sizes covered by the product notes.

Pros & Cons

Pros

• Good value offering six coils and six double iridium plugs in one kit for full-cylinder replacement.
• Many customers report easier installation and improved fuel efficiency after fitting the kit.
• Quality construction details such as stainless-steel springs and ferrite noise suppression improve reliability and reduce interference.

Cons

• Some customers gave mixed feedback on long-term durability of the spark plugs, so performance beyond the guaranteed span may vary.

Specifications

Our Verdict

The UF603 ignition coil and 97390 double iridium spark plug kit is a practical, cost-effective choice for owners of the listed Honda and Acura models who need to remedy misfires and restore engine smoothness. It combines matched coils and longer-life iridium plugs for consistent performance and easier installation, making it good value for DIY replacements, while buyers seeking OEM-branded items or absolute long-term plug life certainty may prefer dealer parts.

Frequently Asked Questions

Does this kit replace all ignition coils and spark plugs?
Yes, the package includes six ignition coils and six double iridium spark plugs intended to replace all cylinders for compatible V6 or specified engines.

Will installation require special tools?
Basic hand tools and a torque wrench are normally sufficient for installation; no special equipment is required beyond standard spark plug and coil removal tools.

How do I confirm my vehicle is compatible?
Confirm fitment by checking the listed model years and engine sizes in the product compatibility notes or by comparing OE numbers such as UF603 and 97390 with your vehicle's service manual.