Ignition Coil & Iridium Spark Plugs for Toyota Tundra (2005-2011) 4.0L V6

High-Output Ignition Coil & Iridium Spark Plug Kit for 2005-2011 Toyota Tundra (1GR-FE / XK30-XK50)

Direct replacement ignition coil and iridium spark plug package designed to eliminate misfires and restore complete combustion efficiency.

The Stock Tundra Ignition Degradation Problem

As the 1GR-FE engine racks up mileage, the factory ignition coils suffer from prolonged heat cycling and dielectric breakdown within the coil boots. This thermal degradation leads to voltage leaks, weak spark energy, and intermittent misfires, especially under heavy load or during cold starts. Furthermore, standard OEM spark plugs experience rapid electrode erosion over time. This erosion increases the gap width, forcing the ignition coils to work harder to jump the gap. This compounds the problem, resulting in sluggish throttle response, reduced fuel economy, and unburnt fuel washing down the cylinder walls.

The Engineering Solution

This ignition overhaul kit tackles voltage degradation by pairing high-output ignition coils with premium performance iridium spark plugs. The upgraded coils feature enhanced copper windings and high-temperature epoxy, increasing primary-to-secondary voltage transfer while actively resisting thermal breakdown. The accompanying iridium spark plugs utilize an ultra-fine center electrode, requiring lower firing voltage while delivering a hotter, more concentrated spark kernel. This optimized spark geometry ensures complete fuel burn, maximizing the 4.0L V6's power delivery, improving cold starting reliability, and providing long-term durability that far outlasts conventional copper or platinum alternatives. The combination restores factory torque capacity and stabilizes idle parameters.

Technical Specifications

Compatibility

• 2005 Toyota Tundra 4.0L V6
• 2006 Toyota Tundra 4.0L V6
• 2007 Toyota Tundra 4.0L V6
• 2008 Toyota Tundra 4.0L V6
• 2009 Toyota Tundra 4.0L V6
• 2010 Toyota Tundra 4.0L V6
• 2011 Toyota Tundra 4.0L V6

The Toyota Workhorse Caliber

Built to handle heavy payloads and daily towing duties, these upgraded ignition components ensure the rugged dependability and consistent low-end torque expected from the Toyota Tundra platform.