X4XZ Ignition Coil & Double Iridium Spark Plug Kit for Chevy Equinox — 4‑Pack UF491 + XP5263, Long‑Life Performance

If your Equinox or other GM vehicle is showing misfires, rough idle or reduced power, replacing both ignition coils and spark plugs together is a straightforward way to address ignition-related performance issues. This X4XZ kit pairs four UF491 ignition coils with four XP5263 double iridium spark plugs, designed to meet or improve on original equipment fit and function for many Buick and Chevrolet 2.0–2.4L applications. The components are built for long life, consistent spark delivery and simple installation without special tools.

Which vehicles will this coil and spark plug kit fit?

The set is compatible with a range of GM models that use UF491 coils and XP5263-style plugs. It covers many Buick and Chevrolet cars and crossovers with 2.0–2.4L engines across model years mostly from mid-2000s through the mid-2010s.

• Chevrolet: Equinox (2010–2014, 2016–2017) Captiva Sport, Cobalt, HHR, Impala, Malibu, Orlando where specified.
• Buick: LaCrosse, Regal, Verano and Allure models with matching engine codes.
• Always cross-check OE numbers (UF491, XP5263) or vehicle compatibility image before ordering.

How do these parts improve engine performance and reliability?

Replacing worn coils and plugs at the same time helps restore proper combustion timing and spark energy, which reduces misfires and smooths engine idle. The double iridium electrodes offer longer life and stable performance compared with standard plugs, while the coils feature robust materials and noise suppression for dependable voltage delivery.

• Double iridium plugs provide durable, consistent spark and extended service intervals (rated long-life).
• Ignition coils include ferrite noise suppression and thermoplastic connectors to resist heat and vibration.
• Matched set reduces mismatch-related issues and simplifies installation.

What comes in the box and which part numbers does it replace?

The package contains four ignition coil packs and four double iridium spark plugs. The kit is supplied to be a direct replacement for several OE and aftermarket references to help ensure correct fitment.

• Included: Ignition Coil Packs x4 and Double Iridium Spark Plug x4.
• OE/Replacement references: UF491, XP5263 and compatible cross-references such as D517A, 5C1609, E991 and others.
• No printed manual included; install is intended to be straightforward for technicians and DIYers familiar with coil-on-plug replacements.

What should I expect during installation and ongoing support?

These components are engineered for plug-and-play replacement in compatible engines. Use basic hand tools and follow torque specs for spark plugs; replace coils and plugs in matched sets to prevent future drivability problems. If you encounter fitment or installation issues, X4XZ provides customer support and a one-year product service window.

• Simple swap for coil-on-plug systems; check spark plug gap and torque specifications before final installation.
• Customer service available 24 hours for installation or quality questions.
• One-year product service covers defects; retain proof of purchase for claims.

Who this is for: This X4XZ kit is intended for owners and mechanics who need a cost-effective, matched replacement for ignition coils and spark plugs on compatible Buick and Chevrolet 2.0–2.4L models. It suits drivers troubleshooting misfires, rough idle or decreased fuel efficiency who prefer replacing coils and plugs together to restore reliable ignition performance. Verify compatibility with your vehicle’s year, engine, and OE part numbers before purchase to ensure correct fitment.