Top 6 NGK Spark Plugs Iridium – Automotive Replacement Spark Plugs

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1. NGK

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Box of 4, NGK 7397-4PK TR5IX Iridium IX Spark Plug

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NGK #ad - Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling.

Trivalent metal Plating - superior anti-corrosion and anti-seizing properties. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage. The 06mm laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical Quenching Effect. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high-performance engines.
BrandNGK #ad
ManufacturerNGK #ad
Height1 Inches
Length4.1 Inches
Weight0.15 Pounds
Width3.5 Inches
Part Number7397
Model7397-4PK

2. NGK

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NGK 5464-4PK Iridium IX Spark Plug, Box of 4

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NGK #ad - Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage.

The 06 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties; Part number of spark plug inside the box: BKR5EIX-11. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines.
BrandNGK #ad
ManufacturerNGK #ad
Height0.7 Inches
Length3.4 Inches
Weight0.1 Pounds
Width0.8 Inches
Part Number5464
Model5464-4PK
WarrantyLimited Warranty

3. NGK

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NGK LKAR7BIX-11S Iridium IX Spark Plug 93501 Iridium Ix, 4 Pack

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NGK #ad - Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage.

Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines. Trivalent metal Plating provides superior anti-corrosion and anti-seizing properties. Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. The 06 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect.
BrandNGK #ad
ManufacturerNGK #ad
Weight0.01 Pounds
Part Number93501
Model93501

4. NGK

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NGK 6441-4PK Iridium IX Spark Plug, Box of 4

#ad
NGK #ad - Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage.

The 06 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties; Part number of spark plug inside the box: ZFR6FIX-11. Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.
BrandNGK #ad
ManufacturerNGK #ad
Height0.9 Inches
Length4.1 Inches
Weight0 Pounds
Width3.7 Inches
Part Number6441
Model6441-4PK

5. NGK

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NGK 4589 Laser Iridium Spark Plug

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NGK #ad - Platinum disc welded to backside of ground electrode provides long life. Better fuel economy and lower emissions, Trivalent Metal Plating for superior anti-corrosion and anti-seizing. Faster starts and quicker acceleration. Longer insulator nose prevents fouling, Corrugated ribs on insulator prevents flashover, and the triple gasket seal eliminates combustion gas leakage. Laser welded iridium center electrode tip ensures high durability and greater spark.
BrandNGK #ad
ManufacturerNGK #ad
Height2.08 Inches
Length4.35 Inches
Weight0 Pounds
Width2.24 Inches
Part Number4589
Model4589

6. NGK

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NGK DPR7EIX-9 Iridium IX Spark Plug

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NGK #ad - Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high-performance engines.

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. Trivalent metal plating has superior anti-corrosion and anti-seizing properties. The 06mm laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage.
BrandNGK #ad
ManufacturerNGK #ad
Height1.3 Inches
Length0.35 Inches
Weight0.04 Pounds
Width0.39 Inches
Part NumberDPR7EIX-9
ModelDPR7EIX-9