X4XZ Ignition Coil Pack & Double Iridium Spark Plug Kit for Toyota/Lexus 6-Pack — UF267/4504, Direct-Fit Durable Coils

X4XZ UF267 ignition coil pack and 4504 double iridium spark plug kit replaces worn coils and plugs to restore reliable spark delivery and smoother engine operation for compatible Toyota and Lexus 3.0L–3.3L models.

This complete 6-pack contains six ignition coil packs and six double-iridium spark plugs engineered as direct-fit replacements for many Toyota and Lexus V6 engines from the late 1990s through the 2000s. Each component mirrors or improves on OE design features—sturdy thermoplastic connectors, ferrite noise suppressors, stainless-steel springs and long-life iridium electrodes—so the set installs without modification and helps maintain consistent combustion and dependable starts.

Which vehicles will this X4XZ kit fit?

The kit is built to match the ignition coils and plugs used on a range of Toyota and Lexus V6 models. Fitment covers many Camry, Avalon, Highlander, Sienna, Solara, RX, ES and RX400h years with 3.0L and 3.3L engines. Always verify compatibility by checking the part numbers and the second product image for coil and plug shape.

• Compatible models: 2000–2004 Avalon 3.0L, 2002–2006 Camry 3.0L, 2004–2006 Camry 3.3L
• Also fits: 2001–2008 Highlander (3.0L & 3.3L), 2001–2006 Sienna, 2004–2008 Solara 3.3L
• Lexus fitment: 1999–2003 RX300 / ES300, 2004–2006 RX330 / ES330, 2006–2008 RX400h
• OE reference: UF267 + 4504; replaces OE numbers like 90919-02234 and 90080-19016

How will these coils and iridium plugs affect engine performance?

Replacing degraded coils and plugs brings back consistent ignition timing and stronger sparks, which helps reduce misfires, rough idling, and hesitation during acceleration. The double iridium plugs are designed for long service life and steady spark characteristics, while coils are constructed to transfer voltage cleanly under thermal stress.

• Improves cold starts and combustion stability without ECU changes
• Reduces misfire-related rough idle and hesitation under load
• Double iridium plugs provide long, consistent service life (up to extensive mileage)
• Ferrite noise suppressor minimizes radio-frequency interference

What materials and features ensure durability and fitment?

The X4XZ kit uses durable thermoplastics and corrosion-resistant internal parts to withstand heat cycles and engine bay conditions. Each coil includes a stainless-steel spring and ferrite noise suppressor; plugs feature a fine iridium center electrode for wear resistance and steady spark performance.

• Thermoplastic coil connector resists heat-related cracking and deforming
• Stainless-steel spring sustains consistent contact pressure
• Ferrite noise suppression prevents radio interference and signal issues
• Double iridium electrodes offer extended interval life and reliable ignition

How easy is installation and what’s included?

This kit is a direct-replacement set intended for mechanics and DIYers familiar with coil-on-plug systems. No special modifications are required—coils and plugs mount in the factory locations—and the package contains six of each component for complete bank replacement.

• Package contents: 6 ignition coil packs, 6 double iridium spark plugs
• Direct-fit design matches OE form and mounting points for straightforward swap
• No printed manual included; basic tools and torque specs from vehicle service manual recommended
• Customer support available 24 hours and 1-year product coverage from X4XZ

Who is this for: This X4XZ UF267 + 4504 kit is aimed at owners and technicians maintaining late‑1990s to mid‑2000s Toyota and Lexus V6 vehicles who want a full-bank replacement of ignition coils and fresh long-life plugs. It’s ideal when you see check-engine codes for misfire, inconsistent idle, or if the service interval for plugs and coils is due. Choose this kit when you want parts that match OE fitment, deliver predictable spark performance, and reduce the risk of ignition-related drivability issues during normal operation.