UF267 Ignition Coil Pack & 4504 Double Iridium Spark Plug Set of 6

In this review of the UF267 Ignition Coil Pack & 4504 Double Iridium Spark Plug set, the bottom line is simple: this kit is for owners of compatible Toyota and Lexus V6 models who need a practical, durable ignition refresh without dealer prices. Our review found the set delivers solid fit and improved drivability thanks to the combination of upgraded ignition coils and long-life double iridium plugs, making it the single easiest way to address misfires, rough idle, and sluggish throttle response on the covered 3.0L and 3.3L V6 engines.

Key Features

• Direct fit compatibility: The kit replaces OE numbers such as UF-267 and 90919-02234, so it installs cleanly on listed Toyota and Lexus V6 models with minimal modifications.
• Double iridium plugs: The 4504 spark plugs use double iridium electrodes for a longer life and consistent spark that helps sustain combustion stability and smoother idle.
• Improved cold starts: The coil packs are designed to match or improve on OE design, which helps provide reliable cold-start performance and reduces start hesitation.
• Noise suppression: Internal ferrite suppressors and stainless-steel springs reduce radio frequency interference and ensure a cleaner ignition signal transfer.
• Durable materials: Thermoplastic coil connectors resist heat and thermal cycling, lowering the chance of connector fracture over time.
• Complete set: The package includes six ignition coil packs and six double iridium spark plugs to service an entire V6 bank in one job.

Who It's For

This kit is aimed at DIY mechanics and independent shops working on 2000-2008 Toyota Avalon, Camry, Highlander, Sienna, Solara and 1999-2008 Lexus RX/ES models with 3.0L or 3.3L V6 engines who want a full-bank replacement. It is particularly useful when symptoms like misfires, rough idle, reduced power or poor fuel economy point to ignition coils or worn plugs.

Owners who prefer OEM-branded parts or require dealer-level warranty coverage should look elsewhere, and vehicles not listed in the compatibility details should not use this set without confirming fit from the second main product image or by checking OE numbers.

Pros & Cons

Pros

• Good fit and easy installation for compatible Toyota and Lexus V6 engines, often reported as a quick, straightforward swap.
• Double iridium spark plugs offer longer life and steady spark, which can improve fuel efficiency and throttle response.
• Coil construction with ferrite noise suppression helps reduce RFI and promotes reliable engine operation.
• Complete six-pack provides value by replacing all coils and plugs in one service interval.

Cons

• Spark plug durability received mixed feedback from some customers, so longevity can vary by driving conditions and maintenance.
• Does not include an instruction manual, which means less experienced installers may need to reference external guides.

Specifications

Brand	X4XZ
Included parts	Ignition Coil Packs x6, Double Iridium Spark Plugs x6
OE references	UF-267, 90919-02234, 90080-19016 and others
Compatible engines	3.0L V6 and 3.3L V6 Toyota and Lexus models listed
Plug type	Double iridium
Noise suppression	Internal ferrite suppressor and stainless-steel spring
Warranty	1 year product service

Our Verdict

The UF267 and 4504 six-pack is a practical, cost-effective solution for owners of the specified Toyota and Lexus V6 cars who need to eliminate misfires and restore smooth running. It pairs reliable coil construction with long-life double iridium plugs for clear drivability benefits and overall value, though those wanting factory-branded parts or step-by-step instructions should plan for additional support.

Frequently Asked Questions

Will these coils and plugs fit my car?
Check the compatibility list and the second main product image for physical match; the set replaces OE numbers like UF-267 and 90919-02234 for the listed models.

How long do the spark plugs last?
The double iridium plugs are designed for extended life and consistent spark, with expected longevity well beyond standard plugs depending on driving conditions.

Is installation difficult?
Installation is straightforward for anyone comfortable with basic spark plug and ignition coil service, but a manual is not included, so less experienced installers should follow a repair guide or professional help.