Top 8 Iridium Spark Plugs – Automotive Replacement Spark Plugs

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1. NGK

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6 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 4469

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NGK #ad - Designed for fuel-injected and turbo engines. Plugs have a fine-wire Iridium center electrode and nickel-alloy terrain electrodes for maximum engine and torque. Extreme performance upgrade via oEM spark plugs and provide a lifetime at 40, 000 50, 000 miles. Precision laser electrode construction.
BrandNGK #ad
ManufacturerNGK #ad
Height4.98 Inches
Length3.7 Inches
Weight0 Pounds
Width0.94 Inches
Part NumberLFR5AIX-11
Model4469

2. NGK

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NGK # 6509 Iridium Spark Plug LTR6IX-11, 6 PCSNEW

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NGK #ad - 1order = 6 Pieces. Better Performance. Good brand Name NGK. Iridium. Free shipping to anywhere in usA and territories For This Item.
BrandNGK #ad
ManufacturerNGK #ad
Height4.98 Inches
Length3.7 Inches
Weight0.66 Pounds
Width0.94 Inches
Part Number6509
ModelLTR6IX-11

3. Autolite

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Autolite Iridium XP Automotive Replacement Spark Plugs, XP3923 4 Pack

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Autolite #ad - Optimal performance: this replacement iridium spark plug provides better durability and a more focused ignition for better overall ignitabilty and optimal performance. Fuel efficiency: these spark plugs utilize a 06mm finewire iridium centerwire tip design with laser welded technology for maximum fuel efficiency.

Our finewire electrodes produce more focused and consistent ignitability resulting in less fuel consumption. Autolite advantage: autolite has been producing spark plugs since 1936 making it one of the most trusted and reliable brands for your OE replacement spark plug needs. Extended change interval: the autolite iridium xp automotive replacement spark plug is engineered to last for up to 100, 000 miles depending on engine type making it one of the most durable spark plugs on the market today.

Construction: every iridium spark plug comes with a platinum protected ground wire for maximum efficiency in all ignition types including DIS systems and a V-trimmed ground electrode for improved ignitability.
BrandAutolite #ad
ManufacturerFRAM #ad
Height1 Inches
Length3.38 Inches
Width4 Inches
Part NumberXP3923
ModelXP3923-4PK
WarrantyLifetime Limited Warranty

4. NGK

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NGK 2477 Iridium Spark Plugs ZFR5FIX-11 ---- 6 PCSNEW

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NGK #ad - Offering the quality, reliability and Durability You'd Expect from an OEM Manufacturer. This listing is for 6 Spark Plugs. Research applications prior to purchase to Make Sure This OEM Part Fits Your Vehicle, Including Engine, Drivetrain and Quantity Needed. Ngk is the world's largest supplier of OEM spark plugs. Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.
BrandNGK #ad
ManufacturerNGK #ad
Height4.98 Inches
Length3.31 Inches
Weight0.66 Pounds
Width0.94 Inches
Part Number2477
ModelZFR5FIX-11

5. Autolite

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Autolite Iridium XP Automotive Replacement Spark Plugs, XP5325 Pack of 4

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Autolite #ad - Our finewire electrodes produce more focused and consistent ignitability resulting in less fuel consumption. Extended change interval: the autolite iridium xp automotive replacement spark plug is engineered to last for up to 100, 000 miles depending on engine type making it one of the most durable spark plugs on the market today.

Optimal performance: this replacement iridium spark plug provides better durability and a more focused ignition for better overall ignitabilty and optimal performance. Construction: every iridium spark plug comes with a platinum protected ground wire for maximum efficiency in all ignition types including DIS systems and a V-trimmed ground electrode for improved ignitability.

Autolite advantage: autolite has been producing spark plugs since 1936 making it one of the most trusted and reliable brands for your OE replacement spark plug needs. Fuel efficiency: these spark plugs utilize a 06mm finewire iridium centerwire tip design with laser welded technology for maximum fuel efficiency.
BrandAutolite #ad
ManufacturerFRAM #ad
Height1 Inches
Length3.38 Inches
Width4 Inches
Part NumberXP5325
ModelXP5325-4PK
WarrantyLifetime Limited Warranty

6. Bosch Automotive

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Single, Bosch Automotive 9603 OE Fine Wire Double Iridium Spark Plug

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Bosch Automotive #ad - 06mm fine wire firing pin provides superior ignitability and performance. 360° continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability. International products have separate terms, are sold from abroad and may differ from local products, including fit, and language of product, age ratings, labeling or instructions. Double iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs.
BrandBosch Automotive #ad
ManufacturerBosch Automotive #ad
Height9 Inches
Length4 Inches
Weight0.05 Pounds
Width7 Inches
Part Number9603
Model9603
WarrantyLimited

7. PHILTOP

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PHILTOP 4PCS LKR7DIX-11S Double Iridium Spark Plugs,Accord/Odyssey/Pilot/Civic/Grand Cherokee/Wrangler/CR-V/Grand Caravan/Sorento/E-lan-tra/Sonata/Cherokee/Town & Country

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PHILTOP #ad - Once the spark plugs are over-consumed, and the expansion of the flame will slow down, the possibility of stalling will be greatly increased, causing power failure and other unfavorable factors. High quality: the nickel-plated shell of the spark plug has high insulation as well as anti-oxidation and anti-corrosion properties.

Caution:the drive reaches 20000-30000 km need to check whether the spark plugs need to be replaced. High efficiency: compared with ordinary spark plugs, the needle-like protrusion of the side electrode of the double iridium spark plug enables the spark plug to quickly ignite the mixed combustible gas in the cylinder and start the engine, which can make the vehicle start faster.

Package contents:it contains four LKR7DIX-11S double iridium spark plugs. Their service life exceeds 8W km. Durability:the double iridium alloy has a high melting point, very durable, and resistant to thermal and electrical wear, making the spark plug resistant to high temperature and pressure, making it ideal for today's high performance engines.
BrandPHILTOP #ad
ManufacturerPHILTOP #ad
Height3.66 Inches
Length4.07 Inches
Width0.89 Inches
Part Number5436SPP0065US

8. NGK

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NGK 6619 Iridium Spark Plugs LFR6AIX-11, 6 PCSNEW

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NGK #ad - Iridium Spark Plugs. Resists carbon buildup and pre-ignition. Designed to operate over a much wider heat range than ordinary plugs. Patented triple gasket sealing process eliminates the possibility of combustion gas leakage.
BrandNGK #ad
ManufacturerNGK #ad
Height4.98 Inches
Length3.7 Inches
Weight0.72 Pounds
Width0.94 Inches
Part NumberLFR6AIX-11
Model6619