Set of 4 NGK 91187 - Iridium IX Spark Plugs LKAR6AIX11 Fast Free Shipping


29 in stock

Thread Diameter: 12mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 26.5mm (1.04")
Hex Size: 9/16" (14mm)
Terminal Type: Solid
Gap: .043" (1.1mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Extended Projection
Ground Electrode
Material: Nickel
Type: Standard
Shape: Taper Cut
Quantity: 1
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 6
Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.
Electrode Material: Iridium
Insulator Type: Long Projection
Nominal Gap: 1.1 mm

Brand: Brand: NGK
SKU SKU: 91187-4K
Mfg Part #: 91187


LKAR6AIX11 Iridium IX Spark Plug (91187) by NGK. Designed for performance enthusiasts who want extreme ignitability, improved throttle response and superior anti-fouling, these spark plugs are a great option for modified engines and appropriate replacement for OE spark plugs, where recommended. With a 0.6 mm laser welded iridium tip and taper cut ground electrode, these plugs provide more area for flame expansion for quicker starts, improved performance, and better efficiency.

Additional information

Weight .44 lbs



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SKU: 91187-4K Category: