Ignition Coil & Iridium Spark Plugs for Lexus GS250 GS300 GS350 GS450h (2005-2023) V6

High-Output Ignition Coil & Iridium Spark Plug Kit for 2005-2023 Lexus GS V6

Designed to restore optimal combustion and eliminate misfires, this direct-replacement ignition kit ensures consistent voltage delivery for GR-Series V6 engines.

The Stock GS Ignition Weakness

The Lexus GR-Series V6 is a highly reliable powertrain, but the factory ignition coils are subjected to intense thermal cycling within the engine bay. Over thousands of miles, the internal epoxy and secondary windings break down due to constant heat soak. This thermal degradation leads to internal voltage leaks, increasing primary resistance and causing intermittent misfires under load. Additionally, worn spark plugs widen the electrode gap, forcing the weakened coils to work harder to jump the gap. The result is a sluggish throttle response, reduced fuel efficiency, a rough idle, and the inevitable blinking Check Engine Light (CEL).

The Engineering Solution

This kit upgrades the ignition system by utilizing precision-wound, high-durability copper wire within the coils, drastically improving thermal resistance and current transfer. By reinforcing the internal insulation, these coils prevent voltage bleed-off and maintain a consistent, high-energy output even under extreme engine bay temperatures. Paired with advanced iridium spark plugs, which feature an ultra-fine center electrode, the system achieves a highly concentrated spark. This combination yields a 15% increase in ignition energy and combustion efficiency over standard components. The iridium material inherently resists spark erosion, maintaining a precise gap over a much longer service life. Engineered to strict OE+ quality control standards, this setup is 100% factory-tested to drop in seamlessly and restore factory-level performance without triggering engine codes.

Technical Specifications

Compatibility

• Lexus GS250 V6 (2005-2023)
• Lexus GS300 V6 (2005-2023)
• Lexus GS350 V6 (2005-2023)
• Lexus GS450h V6 (2005-2023)

The Lexus Standard

For luxury JDM sedans, precision engineering is paramount. This ignition kit guarantees reliable power delivery, smooth idle characteristics, and a no-CEL operation, keeping your GS performing at its absolute peak.