X4XZ UF495 Ignition Coil & 6176 Double-Iridium Spark Plug Kit for Toyota 4.0L V6 — 6-Pack, Restores Idle

X4XZ UF495 ignition coil and 6176 double iridium spark plug kit replaces worn coils and plugs for Toyota 4.0L V6 engines to restore consistent sparks, smoother idle, and reliable starting.

If your Tacoma, Tundra, 4Runner or FJ Cruiser with the 4.0L V6 is showing engine misfires, rough idling, or reduced responsiveness, worn ignition components are often the cause. This kit from X4XZ bundles six direct-replacement UF495 coils with six 6176 double-iridium spark plugs engineered to meet or exceed original equipment fit, form and function so installation is straightforward and performance is stable.

How will this kit affect engine starting and idle?

Replacing degraded coils and plugs often eliminates intermittent misfires and hesitations during cold starts. The double-iridium plugs maintain a stable spark over longer intervals while the coils deliver consistent high-voltage pulses for even cylinder firing.

• Restores reliable cold starts and steady idling
• Reduces misfires caused by weak spark
• Matches OE connectors and mounting points for easy swap

Which vehicles and engines does the UF495 + 6176 kit fit?

This kit is specified primarily for Toyota 4.0L V6 applications and also lists cross-compatibilities for other Toyota and Lexus models. Review the vehicle fit list carefully to confirm compatibility with your model year and engine code before purchasing.

• Common fits: 2005–2015 Tacoma 4.0L, 2005–2011 Tundra 4.0L, 2003–2009 4Runner 4.0L
• Also used across select FJ Cruiser and some Toyota/Lexus V8 engines per cross-reference
• OE numbers referenced (UF495 + 6176) help confirm correct replacements

What are the durability and material advantages of these parts?

The spark plugs use a double iridium electrode for extended service life and stable ignition, while the coils are built with heat-resistant thermoplastic and ferrite noise suppression. Together they are designed to resist thermal cycling and radio-frequency interference that can impair ignition performance.

• Double iridium plugs provide long lifespan and consistent spark
• Stainless-steel spring and ferrite suppressor reduce interference
• Thermoplastic coil connector resists heat-related fractures

What comes in the package and how easy is installation?

The kit contains six ignition coil packs and six double-iridium spark plugs—enough for a full bank replacement on V6 engines. Components match OE dimensions so most DIYers with basic tools can complete the swap quickly; no printed manual is included, so follow a factory service guide or trusted online tutorial.

• Included: 6 × UF495 ignition coils, 6 × 6176 double-iridium spark plugs
• OE cross-references provided to verify fitment
• Simple plug-and-play installation for experienced owners and mechanics

Who is this for: This X4XZ kit is aimed at Toyota and Lexus owners who need a full ignition bank refresh on 4.0L V6 engines—drivers noticing misfires, rough idle, or diminished performance—and mechanics or DIY enthusiasts seeking OE-compatible replacement parts with upgraded spark plug longevity. If you want to restore reliable ignition behavior without changing other engine systems, this plug-and-coil set offers a practical, vehicle-specific solution with one-year product support from the seller.