The ThunderSpark Ignition Coil (part number 921-92003) is a direct-fit replacement for 2002-2008 Buick, Chevrolet, GMC, and Hummer vehicles with 4.2L, 3.5L, and 2.8L engines. Ignition Coils receive a signal from the distributor or engine control computer at the ideal time for combustion to occur and send a high voltage pulse to the spark plug to ignite the fuel air mixture in each cylinder.
Features:
- Engineered for OE Performance: These coils are meticulously engineered and rigorously tested to meet and exceed OE performance and durability standards, ensuring reliable ignition and consistent spark output.
- Effortless Installation: Designed for easy and hassle-free installation, these coils minimize vehicle downtime during replacement, keeping your vehicle on the road.
- Rugged Build: Crafted with high-quality materials, these coils are built to withstand harsh conditions, providing long-lasting performance and reducing the need for frequent replacements.
- Enhanced Fuel Efficiency: By delivering precise and reliable spark, these coils contribute to better fuel combustion, optimizing fuel efficiency, and reducing emissions for a more eco-friendly vehicle operation.
Specifications:
| Number of Terminals | 3 |
| Connector Type | Spade |
| Connector Gender | Male |
| Terminal Gender | Female |
Fits: 2002-2008 Buick, Chevrolet, GMC, Hummer, and Isuzu models including Rainier, Colorado, Trailblazer, Trailblazer EXT, Canyon, Envoy, Envoy XL, Envoy XUV and more — 4.2L, 3.5L, and 2.8L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.
