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Fuel efficiency: these spark plugs utilize a 06mm finewire iridium centerwire tip design with laser welded technology for maximum fuel efficiency.
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. 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.

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



Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. Trivalent metal Plating provides superior anti-corrosion and anti-seizing properties.

1. NGK
#ad
6 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 4469
#adNGK #ad - Extreme performance upgrade via oEM spark plugs and provide a lifetime at 40, 000 50, 000 miles. Designed for fuel-injected and turbo engines.More information #ad
Precision laser electrode construction. Plugs have a fine-wire Iridium center electrode and nickel-alloy terrain electrodes for maximum engine and torque.Brand | NGK #ad |
Manufacturer | NGK #ad |
Height | 4.98 Inches |
Length | 3.7 Inches |
Weight | 0 Pounds |
Width | 0.94 Inches |
Part Number | LFR5AIX-11 |
Model | 4469 |
More information #ad
2. Autolite
#ad
Autolite Iridium XP Automotive Replacement Spark Plugs, XP5325 Pack of 4
#adAutolite #ad - Our finewire electrodes produce more focused and consistent ignitability resulting in less fuel consumption. 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.Fuel efficiency: these spark plugs utilize a 06mm finewire iridium centerwire tip design with laser welded technology for maximum fuel efficiency.
More information #ad
Optimal performance: this replacement iridium spark plug provides better durability and a more focused ignition for better overall ignitabilty and optimal performance. 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. 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.
Brand | Autolite #ad |
Manufacturer | FRAM #ad |
Height | 1 Inches |
Length | 3.38 Inches |
Width | 4 Inches |
Part Number | XP5325 |
Model | XP5325-4PK |
Warranty | Lifetime Limited Warranty |
More information #ad
3. NGK
#ad
Pack of 4, NGK 5464 BKR5EIX-11 Iridium IX Spark Plug
#adNGK #ad - Trivalent metal plating; part number of spark plug inside the box: BKR5EIX-11. 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.
More information #ad
Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines. 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.Brand | NGK #ad |
Manufacturer | NGK #ad |
Height | 0.96 Inches |
Length | 3.62 Inches |
Weight | 0.1 Pounds |
Width | 3.84 Inches |
Part Number | 5464 |
Model | 5464-4PK |
Warranty | Limited Warranty |
More information #ad
4. Denso
#ad
Denso # 5304 IRIDIUM Power Spark Plugs -- IK20 --- 6 PCSNEW --
#adDenso #ad - 1order = 6 Pieces. Denso 5304. Free shipping to anywhere in usA and territories For This Item. Iridium power.More information #ad
Brand | Denso #ad |
Manufacturer | Denso Sales California, Inc. #ad |
Height | 0.96 Inches |
Length | 3.62 Inches |
Weight | 0 Pounds |
Width | 5.76 Inches |
Part Number | 5304 |
Model | IK20 |
More information #ad
5. Bosch Automotive
#ad
Bosch Automotive 9614 OE Fine Wire Double Iridium Spark Plug, Single
#adBosch Automotive #ad - Double iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs. 360° continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability.More information #ad
06mm fine wire firing pin provides superior ignitability and performance. International products have separate terms, age ratings, and language of product, including fit, are sold from abroad and may differ from local products, labeling or instructions.Brand | Bosch Automotive #ad |
Manufacturer | Bosch Automotive #ad |
Height | 5.2 Inches |
Length | 12.8 Inches |
Weight | 0.1 Pounds |
Width | 7.4 Inches |
Part Number | 9614 |
Model | 9614 |
Warranty | Limited |
More information #ad
6. NGK
#ad
4 Pack, NGK LKAR7BIX-11S Iridium IX Spark Plug 93501 Iridium Ix
#adNGK #ad - Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage.Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. Trivalent metal Plating provides superior anti-corrosion and anti-seizing properties.
More information #ad
Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high performance engines. 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.Brand | NGK #ad |
Manufacturer | NGK #ad |
Weight | 0.01 Pounds |
Part Number | LKAR7BIX-11S |
Model | LKAR7BIX-11S |
More information #ad
7. NGK
#ad
NGK # 6418 Iridium Spark Plugs BKR6EIX, 4 PCS NEW
#adNGK #ad - This listing is for 4 Spark Plugs. Ngk is the world's largest supplier of OEM spark plugs. Research applications prior to purchase to Make Sure This OEM Part Fits Your Vehicle, Including Engine, Drivetrain and Quantity Needed.More information #ad
Offering the quality, reliability and Durability You'd Expect from an OEM Manufacturer. Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.Brand | NGK #ad |
Manufacturer | NGK #ad |
Weight | 1.46 Pounds |
Part Number | 6418 |
Model | BKR6EIX |
More information #ad