UF491 Ignition Coil & XP5263 Double Iridium Spark Plug Kit - Reliable

In this review the UF491 ignition coil and XP5263 double iridium spark plug kit is evaluated for drivers looking to restore smooth running and dependable starts on various Buick, Chevy, GMC and Pontiac models. The bottom line: this kit is for owners who need an affordable, direct OE-style replacement that addresses misfires and poor idle without aftermarket tuning. The reviewer found it straightforward to install and effective at eliminating new trouble codes, with the double iridium plugs promising long life and the coils built to transfer high voltage cleanly.

Key Features

• Compatibility: The kit fits many Buick, Chevrolet, GMC and Pontiac 2.0L to 2.4L engines, making it a practical single purchase for those model ranges.
• Double Iridium Spark Plug: Provides consistent, stable spark and extended service life, helping maintain engine efficiency over many kilometers.
• OE Replacement Design: Each coil and plug matches or improves on original equipment to simplify installation and maintain factory performance.
• Materials and Noise Suppression: The coil uses a stainless-steel spring and internal ferrite suppressor to reduce radiofrequency interference and ensure reliable ignition.
• Improved Cold Start: The combination of coil and iridium plug supports superior cold-start performance and smoother idle right after installation.

Who It's For

This kit is aimed at owners of compatible Buick Lacrosse, Regal, Verano, and Chevrolet Equinox, Cobalt, HHR, Malibu, Captiva Sport, Orlando and similar 2.0L-2.4L models who want a cost-effective way to replace failing coils and worn plugs with parts that match OE fit and function. It is also useful for DIYers who value easy, relatively quick installation.

It is less appropriate for vehicles outside the listed model years or for performance builds that require upgraded ignition systems; those users should look for high-performance coils and specialty plugs tuned for modified engines.

Pros & Cons

Pros

• Easy OE-style fit that many customers report installs in 20-25 minutes per bank.
• Double iridium plugs offer long life and consistent spark, supporting fuel efficiency.
• Coils include ferrite noise suppression and thermoplastic connectors for durable operation.
• Good value as a matched four-pack with plugs included for complete service.

Cons

• Does not include an instruction manual, so less experienced users may need a repair guide.
• Compatibility limited to specific 2.0L and 2.4L model years; verify fit before purchase.

Specifications

Our Verdict

The UF491 coil and XP5263 double iridium plug kit is a practical, budget-conscious choice for owners needing an OE-style replacement to cure misfires and rough idle. It pairs durable coil construction with long-life iridium plugs and delivers reliable cold starts and improved running when fitted to compatible 2.0L and 2.4L engines. For most owners seeking value and a direct fit, this kit is a sensible buy.

Frequently Asked Questions

Will this kit fit my 2012 Buick Regal?
It fits 2011-2013 Buick Regal 2.0L and 2011-2017 Regal 2.4L engines; verify your engine size to confirm compatibility.

Are installation instructions included?
The package does not include a manual; customers reported easy installation but less experienced installers should consult a repair manual or online guide.

How long do the spark plugs last?
The double iridium spark plugs are rated for long service life and can provide consistent performance over many kilometers under normal conditions.