UF495 Ignition Coil & 6176 Double Iridium Spark Plug Set of 6

In this review of the UF495 ignition coil and 6176 double iridium spark plug kit, the bottom line is practical reliability for Toyota V6 4.0L owners who need a direct OEM-style replacement. The reviewer found this set ideal for drivers of 2005-2015 Tacoma, 2005-2011 Tundra, 2003-2009 4Runner and select FJ Cruiser models because it combines a high-quality ignition coil design with long-life double iridium plugs, improving cold starts and smoothing engine idle after installation.

Key Features

• Compatibility: Fits a wide range of Toyota V6 4.0L models and many L4 and V8 applications, making parts sourcing simpler for multi-vehicle households.
• Double iridium spark plug: The 6176 plugs use double iridium for a consistent spark and a claimed long service life, reducing replacement frequency.
• OE-style ignition coil: The UF495 coil matches OE fit and connector design for straightforward swap-in installation with minimal adjustments.
• Noise suppression: Internal ferrite suppressor and stainless-steel spring reduce radio frequency interference for cleaner ignition performance.
• Durable materials: Thermoplastic coil connector and premium internal components resist heat and thermal cycling for longer-term reliability.
• Full set: Includes six ignition coils and six double iridium spark plugs so a complete bank replacement can be completed at once.

Who It's For

This kit is best for owners or DIY mechanics who need a full-bank replacement for Toyota V6 4.0L engines in Tacoma, Tundra, 4Runner and compatible FJ Cruiser years, or for those maintaining compatibility across L4 and some Lexus V8 models as listed. It is especially suitable when customers want an OEM-style fit and improved cold-start performance without specialist tools.

Drivers who prefer dealer-branded parts for warranty reasons or who need a guaranteed manufacturer warranty for extended periods may look elsewhere, but for most owners seeking value, fit, and straightforward installation this set is a sensible choice.

Pros & Cons

Pros

• Good fit and ease of installation reported by customers, often completing the swap in under 30 minutes per bank.
• Improved engine smoothness, reduced misfires and better fuel efficiency were noted after installation.
• High-quality double iridium plugs offer long life and stable ignition performance over time.
• Complete six-pack gives consistent replacements across all cylinders at once.

Cons

• Installation instructions are not included, so some users will want to consult a repair manual or online guides.
• One realistic limitation is that this is an aftermarket kit; buyers seeking dealer-branded packaging may prefer factory-sourced parts.

Specifications

Brand	X4XZ
Includes	Ignition Coil Packs x6, Double Iridium Spark Plugs x6
OE Numbers	UF495, 6176, 90919-02248, 90919-A2001, 5C1419, C1426
Compatible Engines	Toyota V6 4.0L, select L4 2.4L/2.7L and Lexus V8 5.0L
Materials	Thermoplastic coil connector, stainless-steel spring, ferrite suppressor
Service Life (plug)	Rated for long life; double iridium design for extended performance

Our Verdict

The UF495 plus 6176 double iridium kit is a cost-effective, OEM-compatible solution for Toyota V6 4.0L owners who need a full-bank replacement that restores smooth idle and reduces misfires. With durable materials, noise suppression, and long-life plugs included, it represents strong value for DIY installers who accept that instructions must be sourced separately.

Frequently Asked Questions

Are these coils and plugs a direct fit for 2008 Tacoma 4.0L?
Yes, the kit is compatible with 2005-2015 Tacoma V6 4.0L models and installs as an OE-style replacement.

Do the spark plugs require special gapping?
The double iridium plugs come predesigned for the specified engines; follow factory gap specs from the vehicle manual if verification is desired.

Is wiring or programming needed after installation?
No programming is required for these OE-style ignition coils; they are plug-and-play for compatible vehicles, though always check connectors before final assembly.