X4XZ Ignition Coil & Double‑Iridium Spark Plug Kit for Toyota Tundra 2000–2009 — 8‑Pack Coils + 8 Plugs, OE Fit & Longer Life

This X4XZ UF230 + 4504 kit pairs eight replacement ignition coil packs with eight double‑iridium spark plugs designed for Toyota Tundra (2000–2009) and a range of Toyota and Lexus V8 models. Every component is built to align with or improve on original equipment form and function, offering longer service life, better electrical transfer and reduced interference compared with worn factory units. The kit comes ready for installation without an instruction manual and is backed by X4XZ customer support.

Which vehicles will these ignition parts fit?

The kit covers multiple Toyota and Lexus V8 models across late 1990s to 2010 model years. It fits 4.7L and several 4.3L and 5.7L applications—confirm compatibility with your VIN or engine code before ordering.

• Toyota Tundra 4.7L (2000–2009) and Toyota Sequoia 4.7L (2001–2009)
• Toyota 4Runner 4.7L (2003–2009) and Land Cruiser 4.7L (1998–2007)
• Lexus GS430, LS430, SC430 (4.3L) and GX470, LX470, LX570 (4.7L/5.7L) years as listed
• OE and replacement numbers included (UF230, 4504, 90919‑02230 and related cross‑references)

How do the ignition coils and double‑iridium plugs improve engine behavior?

New coils restore correct high‑voltage delivery to each cylinder while the double‑iridium plugs provide a stable, long‑lasting spark. Together they reduce misfires, improve idle smoothness and help maintain fuel economy compared to degraded ignition parts.

• Ignition coils use thermoplastic connectors and internal ferrite suppressors to resist heat and interference
• Double‑iridium electrodes offer consistent sparks and extended durability—rated for long service intervals
• Replaces common OE part numbers for direct fit and reliable performance

What are the key build features and quality details?

X4XZ designed this kit with materials intended to handle thermal cycling, vibration and electrical stress typical in V8 engines. The coil springs are stainless steel and the coil housings use heat‑resistant plastics to preserve long‑term connectivity and reduce radio frequency interference.

• Premium materials for coils and reinforced connectors to resist cracking and heat damage
• Internal noise suppressor reduces RFI that can affect electronics and ignition timing
• Spark plugs feature iridium electrodes for longevity and consistent combustion

How easy is installation and what support does X4XZ provide?

These parts are manufactured to fit like OE replacements, allowing quicker, straightforward swaps for technicians or experienced DIYers. The package excludes a printed manual but X4XZ offers responsive customer service for installation and warranty questions.

• Pack includes eight ignition coil packs and eight double‑iridium spark plugs — ready to install
• No printed instruction manual included; customer support available 24/7
• 1‑year product service coverage from X4XZ for defects and installation issues

Who is this for: This kit is aimed at owners and mechanics working on Toyota and Lexus V8 models listed in the compatibility notes who need a full ignition set—drivers experiencing misfire codes, rough idle, or diminished performance and anyone performing routine scheduled maintenance seeking longer‑lasting spark plugs and reliable coil packs.