X4XZ Ignition Coil Pack & Double Iridium Spark Plug Kit — 6-Pack for Toyota/Lexus 3.0–3.3L, OE Fit & Noise Suppression

The X4XZ UF267 ignition coil pack and 4504 double iridium spark plug kit is a direct-replacement ignition set designed to restore reliable spark, smoother idle and consistent performance for compatible Toyota and Lexus 3.0L–3.3L engines.

This complete ignition kit includes six UF267-style coil packs and six 4504 double iridium spark plugs engineered to match or exceed original-equipment fit and function. Built with high-grade materials, noise suppression features and extended-life iridium electrodes, the set helps address common ignition-related symptoms such as misfires, rough idle and loss of throttle response. Before ordering, confirm compatibility with your vehicle using the model list or check the product images for connector and plug type.

Which Toyota and Lexus models will this kit fit?

This X4XZ kit targets V6 3.0L and 3.3L engines used across several Toyota and Lexus platforms from the late 1990s through the 2000s. It fits many vehicles that originally used UF267 coil packs and 4504 spark plugs—verify compatibility visually or by OE numbers before installation.

• Common compatible vehicles: Avalon (2000–2004 3.0L), Camry (2002–2006 3.0L; 2004–2006 3.3L)
• Other fits: Highlander, Sienna, Solara, RX300, RX330, ES300, ES330, RX400h across listed years
• OE references included: UF267, 4504 and multiple OEM part numbers for cross-checking

How do these coil packs and iridium plugs improve engine behavior?

The coil packs restore reliable high-voltage delivery to each spark plug while the double iridium plugs provide a stable, long-lasting spark. Together they reduce intermittent misfires and help recover smooth idling and throttle response without complex tuning.

• Stronger, consistent spark for better combustion stability
• Noise-suppressing ferrite and stainless-steel spring reduce radio interference
• Iridium electrodes designed for extended service life—fewer replacements

What are the build and quality features to expect?

X4XZ designed the coil packs with thermoplastic connectors and internal suppression to withstand heat and vibration. The plugs use a double iridium tip for durability and steady spark performance over long intervals.

• Thermoplastic coil connector resists fracture from thermal cycling
• Internal ferrite noise suppressor minimizes electrical interference
• Double iridium spark plugs rated for extended mileage and consistent spark

What comes in the box and how easy is installation?

The kit ships with six ignition coil packs and six double iridium spark plugs—everything needed for a full-bank replacement on a six-cylinder engine. Basic hand tools and standard installation steps are typically all that’s required; no manual is included, so refer to a vehicle service guide if unsure.

• Included: 6 x UF267 ignition coil packs, 6 x 4504 double iridium spark plugs
• OE cross-reference: replaces UF-267 and multiple OEM part numbers for verification
• Installation: plug-and-play design; professional installation recommended if unfamiliar

Who is this for: This kit is aimed at Toyota and Lexus owners who are experiencing ignition-related issues or who want to proactively refresh the ignition system on 3.0L–3.3L V6 engines. It suits DIY mechanics comfortable with spark-plug and coil replacement, as well as professional shops and fleet managers seeking a cost-effective OEM-compatible ignition solution. Verify fitment against your vehicle year and engine, and contact support if you need assistance choosing the correct application.