High Performance Ignition Coil for Hummer H2 (2008-2009) 6.2L

High-Output Ignition Coil Pack for 2008-2009 Hummer H2 (L92 / GMT820)

Direct-fit ignition coil upgrade: Replaces degrading factory coil packs to restore optimal spark energy, resolve misfires under load, and maintain consistent combustion efficiency across the L92 engine's operating range.

The Stock H2 Ignition Weakness

The factory ignition coils on the 6.2L L92 V8 are prone to thermal degradation over extended heat cycles, especially considering the confined engine bay and heavy curb weight of the GMT820 chassis. Over time, the internal epoxy potting breaks down, leading to voltage leaks and increased secondary resistance. This manifests as high-RPM misfires, sluggish throttle response, and a reduction in towing efficiency. Furthermore, the OEM windings struggle to maintain optimal dwell times under sustained heavy loads, resulting in weak spark propagation and incomplete combustion during off-road or high-stress applications.

The Engineering Solution

This set of 8 replacement UF414 ignition coils is engineered to exceed OEM specifications, utilizing high-grade copper wire for both primary and secondary windings. This reduces internal resistance and allows for faster magnetic saturation, delivering a hotter, more consistent spark. The coils feature upgraded silicone boots and high-dielectric epoxy potting to isolate the spark energy, drastically reducing the risk of arc-over and thermal breakdown. By maximizing voltage output to the spark plugs, these coils ensure complete atomized fuel burn, which stabilizes idle, restores lost low-end torque, and ensures reliable ignition timing under the high-stress conditions typical of a heavy 4x4 platform.

Technical Specifications

Compatibility

• 2008 Hummer H2 (6.2L V8)
• 2009 Hummer H2 (6.2L V8)

The Hummer Durability Standard

Built for a platform designed to conquer rugged terrain and manage heavy towing demands, these upgraded ignition components ensure your heavy-duty powertrain delivers uninterrupted torque and reliable performance, whether crawling trails or hauling payloads on the highway.