NGK Iridium IX Spark Plug 4469 (LFR5AIX-11) – 0.6mm Iridium Tip, 0.044" Pre-Gap, M14-1.25, 5/8" Hex

The NGK Iridium IX 4469 (LFR5AIX-11) is a performance-style iridium spark plug built for faster starts, improved acceleration, and strong anti-fouling performance. It features a fine-wire 0.6 mm iridium center electrode with a taper-cut ground electrode, plus trivalent shell plating for improved corrosion resistance and anti-seize properties. Pre-gapped at 0.044" for easy installation (always confirm your vehicle’s OE fitment and gap spec). 

Key Features

·       0.6 mm iridium center electrode for a stable, consistent spark 

·       Taper-cut ground electrode for better ignitability and throttle response 

·       Excellent anti-fouling performance for cleaner operation 

·       Trivalent metal plating helps resist corrosion and seizing for easier removal 

·       Solid copper core for strong conductivity and heat dissipation 

·       Pre-gapped 0.044" (verify OE spec for your application) 

Product Specifications

·       Brand: NGK 

·       Series: Iridium IX 

·       Part Number: 4469

·       NGK Part Number: LFR5AIX-11

·       Thread Size: M14 x 1.25

·       Reach: 26.5 mm (1.043")

·       Hex Size: 5/8" (16 mm)

·       Seat Type: Gasket / Flat

·       Gap (Pre-set): 0.044"

·       Heat Range: NGK 5

·       Resistor: Yes (5k ohm) 

·       Ground Electrode Qty: 1 

·       Terminal Type: Solid