Ignition Coil + Iridium Spark Plugs for Lexus LS (2007-2017) 4.6L 5.0L

Direct-Fit Ignition Tune-Up Kit for 2007-2017 Lexus LS

What it Does: The ignition coil and iridium spark plug kit replaces worn high-voltage secondary ignition components on the 2007-2017 Lexus LS to eliminate cylinder misfires, stabilize idle, and restore combustion efficiency.

The Stock Lexus LS Thermal Degradation & High-Mileage Spark Breakdown

The 1UR-FSE and 2UR-FSE V8 engines in the XF40 platform generate substantial underhood ambient heat due to dense packaging and dual high-pressure direct injection systems. Over extended thermal cycles, the factory epoxy encapsulation and internal primary/secondary copper windings in the original UF630 ignition coils degrade. Micro-fractures develop in the coil boots, leading to dielectric breakdown and secondary voltage leakages to the cylinder head spark plug tubes. Concurrently, factory fine-wire center electrodes erode past nominal gap specifications, increasing required firing voltage and overworking aging igniters. This causes hesitations under load, DTCs (P0300-P0308), rough cold starts, and unburnt fuel washing down catalytic converters.

The Engineering Solution

This complete 8-cylinder ignition overhaul kit pairs heavy-duty coil-on-plug (COP) units with fine-wire iridium spark plugs to restore factory-spec spark propagation. The ignition coils feature heat-resistant thermoplastic housings filled with high-dielectric resin to prevent high-voltage arcing under sustained thermal stress. Internal primary and secondary windings utilize high-conductivity insulated copper wire for rapid primary charge times and peak inductive discharge. The included iridium spark plugs provide superior corrosion resistance and a laser-welded center electrode that maintains a precise gap under lean-burn stratified-charge conditions, ensuring crisp throttle response and complete fuel atomization.

Technical Specifications

Compatibility

• 2007-2017 Lexus LS460 / LS460L 4.6L V8 (1UR-FSE)
• 2008-2016 Lexus LS600h / LS600hL 5.0L V8 Hybrid (2UR-FSE)

Frequently Asked Questions

Does this fit the XF40 LS?
Yes, this is a direct fit for the 2007-2017 Lexus LS equipped with the 1UR-FSE or 2UR-FSE engine.

Should spark plugs and ignition coils be replaced at the same time?
Yes, installing fresh plugs with new coils prevents excessive electrical resistance from damaging the new coil windings and ensures balanced cylinder-to-cylinder combustion.

The Lexus Engineering Caliber

Lexus V8 powerplants demand exact electrical tolerances to retain the flagship refinement, effortless power delivery, and ultra-smooth idle inherent to the marque. Refreshing the secondary ignition system ensures your luxury powertrain operates within its engineered factory thresholds.