UF602 Ignition Coil & 97390 Double Iridium Spark Plug Kit - Reliable

In this review the UF602 Ignition Coil & 97390 Double Iridium Spark Plug kit is evaluated for compact, routine engine maintenance on 2.4L Honda and Acura models. The kit is aimed at owners who need a direct replacement for worn coils and plugs and want noticeable improvement in idle smoothness and cold-start response. Its single biggest selling point is combining four replacement ignition coils with four long-life double iridium plugs in one package, making a full-bank tune-up convenient for Accord, CR-V, Civic SI, Crosstour and Acura ILX owners.

Key Features

• Direct vehicle fit: Designed to replace OE UF602 and related part numbers for 2.4L Honda and Acura engines, reducing fitment guesswork and simplifying installation.
• Complete kit: Includes four ignition coil packs and four double iridium spark plugs so a full bank replacement can be done in one service session.
• Improved starting and idle: Matching or improving on OE design helps restore cold-start performance and smooth engine idle when coils or plugs had degraded.
• Durable plugs: Double iridium construction promises long life and a consistent, stable spark for extended service intervals up to the expected lifetime noted by the manufacturer.
• Noise suppression: Coils include a stainless-steel spring and internal ferrite suppressor to reduce radiofrequency interference and improve ignition reliability.
• Simple install: The components are engineered to match OE dimensions for straightforward swapping without modification, which many users report as fast and easy.

Who It's For

The kit is best for do-it-yourself mechanics and independent shops working on 2008-2015 Honda 2.4L engines and the 2013-2015 Acura ILX 2.4L who want a matched set of coils and plugs for a full-bank replacement. It suits owners who are experiencing misfires, rough idle, reduced power or poor fuel economy and want to address ignition wear in one visit.

It is less suitable for vehicles outside the specified fitment or for owners seeking dealer-branded parts with manufacturer warranty extensions; those buyers should verify compatibility against their vehicle's service manual and consider OEM channels if a factory warranty is required.

Pros & Cons

Pros

• Provides a matched set of four coils and four iridium plugs for a single service interval, offering clear value for a full-bank job.
• Many reviewers note improved engine smoothness and easier cold starts after installation.
• Coils incorporate noise suppression features and thermoplastic connectors that aid durability and proper fit.
• Spark plugs are double iridium, promising longer life and consistent spark performance.

Cons

• Some users reported shorter-than-expected coil life in isolated cases, so longevity may vary by use and conditions.

Specifications

Kit contents	4 ignition coil packs, 4 double iridium spark plugs
Compatible engines	2.4L L4 Honda and Acura 2008-2015 models
Primary replace numbers	UF602, 97390, 5C1719, C1662, 30520-R40-007
Spark plug type	Double iridium
Coil features	Stainless-steel spring, internal ferrite noise suppressor, thermoplastic connector
Intended benefits	Reduce misfires, improve idle, restore power and fuel economy

Our Verdict

The UF602 coil and 97390 double iridium spark plug kit is a practical, cost-effective option for 2.4L Honda and Acura owners who need a matched bank replacement. It restores smoother idle and better cold-start behavior and includes long-life iridium plugs for reduced maintenance frequency, making it a good value for routine ignition system service while acknowledging occasional variability in coil longevity.

Frequently Asked Questions

Is this kit a direct fit for my 2009 Honda Accord 2.4L?
Yes, the kit lists compatibility with 2008-2012 Accord 2.4L engines; verify with the vehicle picture or service manual before purchase.

Are the spark plugs long life?
Yes, the included double iridium spark plugs are designed for extended service life and consistent spark performance.

Does the kit include installation instructions?
No, the package does not include a manual, but the coils and plugs are engineered to match OE form for straightforward installation by a DIYer or mechanic.