NPAUTO Ignition Coil Pack Set of 6 for 2002–2006 Chevy/GMC V6 (UF-303/C1395) — OE Fit, Gaskets Included

NPAUTO ignition coil pack set of 6 replaces factory coils on compatible 2002–2006 Chevy, GMC, Isuzu and related models to restore spark performance and help eliminate misfires.

If your vehicle shows signs of rough idle, reduced power, or inconsistent fuel economy, worn ignition coils are a common cause. This NPAUTO set contains six coil packs built to match OE fitment for specific V6 engines used in Trailblazer, Colorado, Envoy, Ascender, Bravada and similar models. Each coil comes with a gasket and uses tested materials for reliable electrical performance and longer service life when installed correctly.

What models and engines will these NPAUTO coils fit?

These coils are designed for several GM- and Isuzu-based vehicles from the 2002–2006 model years that use the specific UF-303/C1395 style coil. Always cross-check your vehicle’s part numbers and engine configuration before ordering to ensure compatibility.

• Fits: Chevy Trailblazer (2002–2005), Colorado (2004–2006)
• Also for: GMC Canyon (2004–2006), Envoy, Buick Rainier (2004–2005)
• Compatible with: Isuzu Ascender, Oldsmobile Bravada and similar V6 engines
• Cross-references: UF303, 12570616, C1395, 12568062 and listed interchange numbers

How will replacing all six coils affect drivability?

Replacing a failing coil pack set addresses common symptoms like engine misfires, stalling, and uneven acceleration. With all six coils renewed at once you reduce the chance of recurring misfire codes and improve throttle response and steadier idling.

• Reduces misfire-related check engine lights
• Improves idle smoothness and engine responsiveness
• Helps restore fuel economy lost to incomplete combustion
• Provides consistent spark delivery across all cylinders

What comes in the package and what should I check before installation?

The set ships with six ignition coils and matching gaskets to replace the factory parts. Before installation, verify the part number against your vehicle’s compatibility chart and inspect wiring harnesses, boots, and spark plugs for wear to ensure a complete repair.

• Included: 6 ignition coil packs and gaskets
• Pre-install checks: confirm engine code and OEM part cross-reference
• Inspect related items: spark plugs, ignition wires (if used), and connector condition
• Torque coil mounting bolts to manufacturer spec during installation

How reliable are these aftermarket coils and what testing do they undergo?

NPAUTO selects materials and subjects each coil design to performance checks to reproduce a dependable fit and ignition output. While aftermarket parts vary, this set is produced with internal coil insulation and housings intended to resist heat and vibration common in V6 engine bays.

• Engineered for OEM-style fitment and electrical characteristics
• Quality-tested internal components and housings
• Designed to withstand typical operating heat and vibration
• Sold as a full six-pack to avoid uneven wear across cylinders

Who this is for: This ignition coil pack set is aimed at owners and technicians working on mid-2000s GM and Isuzu V6 SUVs and trucks who need a full-coil replacement to resolve misfires or restore reliable ignition performance. It’s best for those who will replace all coils at once and who verify fitment against the vehicle compatibility list and part cross-references before purchase. If you’re troubleshooting intermittent misfires, checking connectors and plugs alongside these coils will give the most durable repair.