AULINK Ignition Coil & Spark Plug Kit UF491 — 4pc Set for GM 2.0L–2.4L (Buick LaCrosse, Chevy Equinox) High-Heat Durable

The AULINK UF491 4-piece ignition coil and spark plug kit replaces worn coils and plugs for compatible Buick and Chevrolet 4-cylinder engines to restore reliable ignition performance.

This complete pack includes four ignition coils engineered for high-heat endurance and four trivalent metal-plated spark plugs matched to the coils. Each part is produced under strict quality controls and tested for electrical function and leakage, making the set a convenient direct-replacement option for many GM 2.0L–2.4L L4 applications. Below you'll find practical answers to common buyer questions about compatibility, construction, installation, and maintenance.

Which vehicles and engines will the UF491 kit fit?

The kit is intended as a direct-fit replacement for a range of GM compact and mid-size models equipped with 2.0L–2.4L inline-4 engines. Check your OEM part numbers and engine code to confirm compatibility before ordering.

• Buick: LaCrosse (2010–2016) 2.4L, Regal (2011–2013 2.0L / 2011–2017 2.4L), Verano (2012–2017)
• Buick Allure 2.4L (2010)
• Chevrolet: Equinox (2010–2017 2.4L), Orlando (2012–2014 2.4L), Captiva Sport (2010–2015 2.4L)
• Other Chevy models: Cobalt, HHR, Malibu with applicable 2.0L–2.4L engines; verify years and engine size

What OEM numbers and parts are included in the kit?

The package pairs ignition coils with matching spark plugs and is compatible with numerous OEM references. Use the listed OEM cross-references to make sure you’re ordering the correct replacement for your vehicle.

• Ignition coil cross-references: UF491 / UF-491 and many OEM codes such as 12578224, 12638824, 25190788, and more for verification
• Spark plug reference: XP5263
• Supplied as a 4-coil + 4-plug set to service an entire cylinder bank on 4-cylinder engines

How are these coils and plugs built, and what testing do they undergo?

AULINK designs the coils for elevated temperature tolerance and resistance to mechanical stress, while the spark plugs receive a trivalent metal plating to improve durability. Every unit is produced in facilities that follow automotive quality standards and is function and leakage tested before shipping.

• High-temperature, impact-resistant coil housings
• Trivalent metal-plated spark plugs for corrosion resistance
• Manufactured in TS16949-aligned facilities with 100% functional and leakage tests

What warranty and support does AULINK provide for this kit?

Each set is backed by a limited coverage period to protect against early failures and manufacturing defects. Reach out to the seller or AULINK customer service for assistance with fitment questions or warranty claims.

• Standard coverage: 1 year or 50,000 km
• Pre-sale fitment verification recommended to avoid returns
• Contact support for troubleshooting or replacement procedures

Who is this for? The AULINK UF491 4-piece ignition coil and spark plug kit is aimed at DIY mechanics and professional technicians who need a full ignition-bank replacement for compatible Buick and Chevrolet 2.0L–2.4L four-cylinder engines. It’s suited for owners restoring engine starting reliability, eliminating misfires, or performing scheduled ignition service. Before installation, confirm vehicle year, engine size, and OEM part cross-references to ensure the kit matches your application.