The NGK LFR5AIX-11 4469 Iridium IX Spark Plug is meticulously engineered to provide superior ignition performance for a variety of automotive applications. Featuring a fine wire iridium center electrode, this spark plug offers exceptional ignitability, improved fuel efficiency, and reduced emissions. The iridium alloy center electrode is six times harder than platinum, ensuring high durability and a consistently stable spark.

The spark plug’s design includes a tapered ground electrode, which reduces quenching and results in better combustion and improved throttle response. The solid copper core and high-grade alumina silicate ceramic insulator provide excellent heat dissipation and dielectric strength. Additionally, the trivalent metal plating delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal.

Specifications & Features:

Model Number: LFR5AIX-11
Part Number: 4469
Electrode Material: Iridium center electrode, copper core
Heat Range: 5
Resistor: Yes, 5000 Ohm
Thread Size: 14mm x 1.25
Reach: 26.5mm
Hex Size: 5/8 inch (16mm)
Gap Size: 0.044 inch (1.1mm)
Seat Type: Gasket
Ground Electrode Tip Design: Tapered
Compatible with: All 5700 HEMI engines

SKU: LFR5AIX-11/03