NGK MOD Ignition Coil Set 8pk Stock #49473

The NGK MOD Ignition Coil Set 8pk is a direct replacement coil-on-plug ignition system designed for General Motors vehicles from 1999 through 2009. This eight-pack contains complete coil packs that mount directly to the spark plugs, eliminating the traditional plug wires and distributor cap that characterize earlier ignition architectures. NGK's MOD series coils deliver consistent spark across all eight cylinders, restoring reliable cold starts, smooth idle, and responsive acceleration in aging GM engines.

Coil-on-plug technology concentrates the ignition transformer directly above each spark plug, reducing voltage loss that occurs through long plug wires. The black-finished housing resists moisture infiltration and electrical arcing under hood conditions. Each coil in this NGK MOD 8-pack handles the full output voltage required for proper combustion, making them suitable for both stock and moderately modified GM engines where fuel and timing remain within factory parameters. The set composition ensures complete coverage—one coil per cylinder for V8 applications or the relevant subset for inline six-cylinder GM engines using eight-coil configurations.

Technicians and owners restoring ignition performance on 1999–2009 GM trucks, SUVs, and sedans gravitate toward NGK MOD coils because they address the cumulative wear that causes misfires, rough running, and hard starting in higher-mileage engines. This replacement set eliminates the need to source individual coils from different batches or manufacturers; the eight-pack ensures matched performance across all cylinders. Installation requires only basic hand tools and no specialized equipment—removal of the old coils, disconnection of the electrical connector, and reinstallation of the new pack restores ignition reliability in an afternoon.

NGK has long held a presence in OEM ignition supply, and the MOD line reflects their focus on affordable, proven replacement components rather than exotic performance variants. For owners seeking a straightforward, cost-effective fix for worn ignition coils on 1999–2009 GM vehicles, the NGK MOD Ignition Coil Set 8pk delivers the core functionality expected from a established ignition brand without unnecessary premium pricing.