NPAUTO Ignition Coil Pack Set for Chevy/GMC V6 — Set of 6 UF-303 C1395, Direct-Fit, With Gaskets

NPAUTO replacement ignition coil pack set (6 coils) engineered to restore reliable spark and reduce misfires for compatible Chevrolet, GMC, Buick, Isuzu and related V6 engines.

These NPAUTO coils are a direct-fit aftermarket solution designed to replace failed factory ignition coils on several early-2000s GM and related vehicles. Each set includes six coils with gaskets and is manufactured from tested materials to meet durability and fitment expectations. Use the vehicle compatibility chart before ordering to confirm exact fit for your model and year.

How will these coils affect engine performance?

Fresh ignition coils can return consistent spark timing and combustion across cylinders, helping the engine run smoothly under load. They address common symptoms caused by failing coils without changing other engine systems.

• Reduces engine misfires and rough idle when swapped for worn coils.
• Improves throttle response by restoring consistent ignition.
• Helps recover lost power linked to intermittent spark failures.

Which vehicles and part numbers do these coils replace?

This six-pack covers many GM and partner-brand V6 applications from the early 2000s. The unit cross-references several OE and aftermarket numbers to simplify identification.

• Fits: 2002–2006 Chevy Trailblazer, 2004–2006 Chevrolet Colorado, 2004–2006 GMC Canyon, GMC Envoy, Buick Rainier, Isuzu Ascender, i-290, i-370, and similar models.
• Interchange numbers: UF-303, UF303, C1395, 12570616, 12568062 and related IDs.
• Package: 6 ignition coils included with gaskets for full-bank replacement.

What quality checks and materials back these aftermarket coils?

NPAUTO coils are constructed with attention to internal winding, insulation, and housing materials to resist heat and vibration. Each coil is tested to ensure electrical properties and fitment match expected specifications.

• Quality-tested internal coils for consistent electrical output.
• Durable housing materials chosen to withstand engine bay conditions.
• Individual coil gaskets included to improve sealing and installation reliability.

How easy is installation and what should I prepare?

Installation is straightforward for anyone comfortable accessing the ignition coils on the intake cover or valve cover area. Swapping all six at once prevents uneven wear and future diagnostic confusion.

• Replace coils one bank at a time following anti-static precautions.
• Use included gaskets; inspect spark plug boots and wires while installing.
• Confirm compatibility with the vehicle chart before starting the job.

Who is this for: Technically-minded DIYers, independent mechanics, and fleet operators who need an affordable, full-bank replacement for failing or aged ignition coils on compatible GM and partner V6 engines. If you want a direct-fit aftermarket option that covers all six cylinders in one purchase and includes gaskets, this NPAUTO set is built as a practical repair choice.