Performance Overview

NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.

Specifications

• Part Number: IFR6T11
• Stock Number: 4589
• Resistance: 5000
• Ground Electrode Tip Design: Standard
• Ground Configuration: Standard
• Ground Electrode Core Material: Nickel
• Electrical Terminal Type: Non-Removable Nut
• Center Electrode Core Material: Copper
• Center Electrode Tip Material: Iridium
• Gap Size: .044
• Ground Electrode Quantity: 1
• Hex Size: 5/8
• Insulator Height: 50.50
• Manufacturer Heat Range: 6
• Seat Type: Flat
• Reach: .75
• Thread Diameter: 14.00

Key Features

• Actual OE or Equivalent Design: OEM quality construction fine wire Iridium Alloy Center Electrode provides consistent performance
• Iridium Alloy Center Electrode: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
• Platinum Tip Ground Electrode: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
• Solid Copper Core: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
• Trivalent Metal Plating: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
• Recommended Usage: Best for vehicles with OE fine wire iridium alloy plugs

Vehicle Fitment Table

FAQ

Will this fit my vehicle?
Please verify your year, make, model, position, and any fitment notes using the Vehicle Fitment Table above before purchase.

What part number is this?
The listed part number is 4589.

Is this product designed for direct replacement?
Yes. This product is intended to match the compatible vehicle applications listed in the fitment table.

Should I confirm fitment before ordering?
Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering.

Common Searches

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