NPAUTO Ignition Coil Pack Set for Chevy GMC V6 - Set of 6, Direct-Fit Replacement UF-303

NPAUTO ignition coil pack set of six designed to replace factory coils on compatible Chevy, GMC, Buick and Isuzu V6 engines for reliable spark delivery.

If your vehicle is showing intermittent misfires, a rough idle, or lower fuel efficiency and you’ve narrowed the issue to worn ignition coils, this NPAUTO coil pack kit (set of 6) is built as a direct-fit aftermarket replacement for many early‑2000s GM V6 models. Each coil comes with a gasket and is engineered for straightforward installation where fitment matches the listed applications and interchange numbers.

Which vehicles and engines does this ignition coil set replace?

This six-pack is intended for specific GM and related models that used V6 ignition coil packs during the 2002–2006 model years. Always verify your VIN or the vehicle’s existing part numbers against the compatibility chart before buying to ensure a correct match.

• Common fits: 2002–2005 Chevrolet Trailblazer, 2004–2006 Colorado, 2004–2006 GMC Canyon
• Also fits: GMC Envoy, Buick Rainier, Isuzu Ascender, Isuzu i-290 and i-370 in applicable years
• Cross-reference numbers: UF-303, C1395, 12568062 and related interchange codes
• Check vehicle specifics: engine code, year, and OEM part number for exact compatibility

How will replacing coils with this NPAUTO set affect vehicle performance?

Installing new coils can restore consistent spark timing and cylinder combustion, which often reduces engine misfires, improves idle smoothness, and helps recover lost power and fuel economy when coils were the cause. Results depend on overall engine condition and other ignition components.

• Targets symptoms: misfire codes, rough idle, and intermittent power loss
• Can contribute to improved fuel efficiency when ignition was impaired
• Designed to meet electrical and dimensional requirements for direct replacement
• Includes gaskets to help ensure a good seal at the mounting surface

What do the parts and quality checks include?

Each coil in the set is constructed using selected materials for internal windings and housings, then tested to confirm fit and basic durability. The kit is packaged as six individual coils with gaskets so you can replace all cylinders at once or keep spares on hand.

• Set contains six ignition coils and matching gaskets
• Manufactured components undergo electrical and fitment testing
• Meets common aftermarket interchange part numbers for easy cross-reference
• Sold as a full pack to simplify multi‑cylinder service and troubleshooting

How simple is installation for DIY mechanics and professional shops?

Installation is a straightforward bolt-and-plug replacement when you have basic hand tools and access to the ignition coil locations on the intake manifold. Take care to follow torque specs, keep connectors clean, and replace gaskets to prevent vacuum or sealing issues.

• Direct-fit design for compatible vehicles—no modification required
• Replace one or all six coils based on diagnosis or preventative maintenance
• Use dielectric grease on connector pins if recommended, and follow OEM torque values
• Refer to vehicle service manual or a repair guide for step-by-step instructions

Who is this for: This NPAUTO ignition coil set is aimed at owners and mechanics of early‑2000s GM V6 trucks and SUVs who need a reliable, cost‑effective coil replacement. It’s suitable for DIYers comfortable working under the hood and for professional shops performing ignition system repairs—provided you confirm fitment using the interchange numbers and the vehicle compatibility chart before purchase.