Availability
NGK Iridium IX Spark Plugs
252 Customer Reviews
Showing In Stock Items. Show All 20 Items.
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-2667
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, 1.043 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-6619
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-6418
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-6988
Not Yet Reviewed
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-6637
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Resistor, Each
Part Number: NGK-5044
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 12mm Thread, .750 in. Reach, Resistor, Each
Part Number: NGK-6681
Not Yet Reviewed
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-6441
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Iridium, Each
Part Number: NGK-2477
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, NGK DCPR7EIX SOLID Iridium IX Series Spark Plug, 19mm Reach, 12mm Thread, Heat Range 7, Flat Seat, 5/8 Hex, .031 in. Gap, Each
Part Number: NGK-97637
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Gasket Seat, 14mm Thread, .750 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-4055
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Iridium, 12mm Thread, 0.750 in. Reach, Flat Seat, 5/8 in. Wrench Size, Each
Part Number: NGK-97181
Not Yet Reviewed
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Gasket Seat, 12mm Thread, .750 in. Reach, Projected Tip, Resistor, Each
Part Number: NGK-8196
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Spark Plug, Iridium IX, Iridium, 14mm Thread, 0.927 in. Reach, Flat Seat, 13/16 in. Wrench Size, Each
Part Number: NGK-95525
Not Yet Reviewed
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster