Set of 6 UF603 Ignition Coils Pack & Iridium Spark Plugs - Honda/Acura

Our review of this Set of 6 UF603 ignition coils and iridium spark plugs looks at who should consider this replacement pack and why it can be a practical choice for owners of certain Honda and Acura V6 models. The bottom line: this kit is aimed at DIY mechanics and budget-conscious owners who need a full-cylinder replacement with the convenience of matching coils and plugs, and the single biggest reason to buy is the matched set format that simplifies installation and helps restore consistent ignition across all six cylinders.

Key Features

• Complete set: Includes six UF603 ignition coils and six iridium spark plugs so all cylinders are replaced at once for balanced performance.
• Multiple OE references: Covers many OE part numbers such as 30520-R70-A01 and 30520R70S01, which helps confirm fitment with compatible Honda and Acura V6 engines.
• Improved ignition efficiency: The coils claim optimized winding and insulation to transfer energy more consistently to the iridium plugs for steadier combustion.
• Iridium plugs: Smaller center electrode on the iridium plugs offers a concentrated spark for quicker ignition and potentially smoother idling.
• Durability focus: Coils are described as using copper windings and epoxy resin to resist overheating and extend service life versus some stock units.

Who It's For

This pack is best for owners of Honda Accord 2008-2012 V6, Odyssey 2008-2010 V6, Crosstour 2012 V6, and Acura RL/TL/TSX models with the 3.5L or 3.7L engines who want a coordinated replacement of coils and plugs to address misfires or rough idling. It also suits DIY installers who prefer to replace all six ignition items at once rather than doing piecemeal repairs.

Those who should look elsewhere include owners who cannot confirm exact OE numbers against their original parts or who need OEM-branded coils with full factory warranty backing. Also, if corrosion resistance in coastal climates is a primary concern, some customers have reported corrosion issues and may prefer higher-end OEM parts.

Pros & Cons

Pros

• Good value for a matched set that replaces all six coils and plugs at once.
• Iridium plugs provide concentrated sparks for improved ignition consistency and potential fuel economy benefits.
• Wide OE number coverage helps buyers verify compatibility with many V6 Honda and Acura applications.

Cons

• Mixed customer reports include occasional misfires or timing-related issues, so results can vary by vehicle condition.
• Some users noted concerns about corrosion over time, which may affect longevity in harsh environments.

Specifications

Our Verdict

For owners who need a full-cylinder replacement and can confirm OE compatibility, this Set of 6 UF603 coils and iridium plugs is a practical, cost-effective option that restores consistent ignition and avoids partial repairs. It represents solid value for DIY installers and budget-minded drivers, though those seeking OEM-level corrosion resistance or guaranteed long-term performance may prefer factory parts.

Frequently Asked Questions

Will these fit my vehicle?
Check the OE numbers listed against your original parts; the kit covers many OE references for Honda and Acura 3.5L and 3.7L V6 models.

Do the plugs improve fuel economy?
Iridium plugs can provide steadier ignition and in some cases smoother running and modest fuel efficiency gains depending on the vehicle condition.

Should all six coils be replaced together?
Replacing all six at once ensures balanced ignition and avoids mixing old coils with new ones, which can help prevent uneven performance.