Denso 3426 FK20HR11 Double Iridium Spark Plug

Premium Double Iridium Core
Features a 0.4mm ultra-fine iridium center electrode and iridium-enhanced ground electrode for exceptional durability and consistent spark performance.
Laser-Welded Tip Technology
Precision laser welding ensures maximum conductivity and minimizes voltage requirements, reducing wear for up to 120,000 miles of reliable service.
Exact OEM Replacement
Direct fit for Toyota/Lexus models (OE# 90919-01247), maintaining factory-specified heat range and thread dimensions for seamless compatibility.
Optimized Combustion Efficiency
Patented U-groove ground electrode design accelerates flame propagation, improving fuel economy and reducing cold-start misfires.
Corrosion-Resistant Construction
Nickel-plated shell with triple-seal gasket prevents leaks and withstands extreme cylinder pressures up to 25 bar.
Professional-Grade Application
Ideal for high-performance engines, hybrid vehicles, and stop-start urban driving conditions requiring long-term ignition stability.
Global Stock Availability
Shipped in OEM packaging with bulk order discounts for workshops and fleet operators.