Ignition Coil + Iridium Spark Plugs for Lexus GS (2007-2015) 3.5L

Direct-Fit Ignition Coil & Iridium Spark Plug Kit for 2007-2015 Lexus GS

What it Does: The ignition coil and iridium spark plug kit restores secondary ignition voltage and combustion efficiency on the 2007-2015 Lexus GS to eliminate engine misfires, rough idle, and hesitation under load.

The Stock Lexus GS Ignition Coil Breakdown & Plug Degradation

In the high-compression (11.8:1) direct- and port-injected 2GR-FSE engine, factory coil packs are subjected to continuous thermal cycling within the cylinder head spark plug wells. Over time, internal epoxy insulation degrades, creating micro-fractures in the secondary winding that cause high-voltage dielectric breakdown and spark scatter under peak cylinder pressure. Simultaneously, factory spark plug ground electrodes erode from electrical discharge, widening the gap past factory clearance. This increases secondary resistance, leading to primary coil overload, intermittent misfires (DTC P0300 through P0306), unburned fuel fouling the catalytic converters, and sluggish transient throttle response on the S190 and L10 chassis.

The Engineering Solution

This direct-replacement ignition service pack restores factory firing consistency using reinforced thermal magnetic laminations and copper core secondary windings engineered to resist thermal breakdown. The high-dielectric PBT housing prevents voltage leak-down and tracking down the boot. Paired with fine-wire iridium electrode spark plugs, this kit maintains a stable flame kernel under high cylinder pressures with significantly lower required breakdown voltage. Featuring standard OE-pin connectors, this set drops directly onto the factory harness without repinning or ECU recalibration.

Technical Specifications

Compatibility

• 2007-2011 Lexus GS 350 3.5L V6 (S190 Chassis)
• 2007-2011 Lexus GS 450h 3.5L V6 Hybrid (S190 Chassis)
• 2013-2015 Lexus GS 350 3.5L V6 (L10 Chassis)
• 2013-2015 Lexus GS 450h 3.5L V6 Hybrid (L10 Chassis)

Frequently Asked Questions

Does this fit the S190 and L10 GS?
Yes, this is a direct fit for the 2007-2015 Lexus GS equipped with the 2GR-FSE 3.5L V6 engine.

Do these spark plugs require gapping prior to installation?
No, the iridium fine-wire plugs come pre-gapped to factory specification, and mechanical gapping should be avoided to prevent damaging the fine iridium tip.

The Lexus Performance Standard

Preserve the smooth, high-revving power delivery of your D-4S powertrain. Restoring crisp ignition timing and full flame propagation ensures instant throttle pickup and clean exhaust stroke compliance across the entire RPM band.