Best Iridium Spark Plugs in 2026

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

The 0.6 millimeter 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

Laser welded Iridium center electrode tip ensures high durability and greater spark

Platinum disc welded to backside of ground electrode provides long life

Longer insulator nose prevents fouling, corrugated ribs on insulator prevents flashover, and the 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

The 0.6 millimeter 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

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

The 0.6 millimeter 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

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Better Performance

Good Brand Name NGK

Iridium Spark Plugs

Designed to operate over a much wider heat range than ordinary plugs

Resists carbon buildup and pre-ignition

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior

The 0.6mm 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, the corrugated ribs on insulator, and a triple gasket seal eliminates combustion gas leakage

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response

The 0.6 millimeter laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect

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

Extreme performance upgrade via OEM spark plugs and provide a lifetime at 40,000 50,000 miles.

Plugs have a fine-wire Iridium center electrode and nickel-alloy terrain electrodes for maximum engine and torque.

Designed for fuel-injected and turbo engines.

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Better Performance

ACDelco 41-101

Iridium offers excellent engine idle stability and smooth performance

Iridium allows for small, efficient electrode designs for reliable cold starting and quick acceleration

Iridium fine-wire electrode helps burn away carbon deposits on the tip of the plug as they form

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.

Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer

NGK is the world's largest supplier of OEM spark plugs

NGK 6046 now s/s to NGK 97637

NGK 97637 DCPR7EIX is the Newest Number

NGK is the world's largest supplier of OEM spark plugs

SK16R11

Excellent acceleration and performance

Stable combustion during idling

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior fouling

The 0.6 millimeter 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 avoid fouling, the corrugated ribs on insulator avoid flashover, and a triple gasket seal eliminates combustion gas leakage

Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity.

Research applications prior to purchase to make sure this part fits your vehicle including engine, trim level & quantity needed

Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer

Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity.

Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer

NGK is the world's largest supplier of OEM spark plugs

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

FUEL EFFICIENCY: These spark plugs utilize a 0.6mm 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

OPTIMAL PERFORMANCE: This replacement iridium spark plug provides better durability and a more focused ignition for better overall ignitabilty and optimal performance

Double Iridium electrodes - iridium firing pin and iridium ground electrode inlay - offer higher performance

OE-matched spark position for compatibility with Gasoline Direct Injection (GDI) technology

Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize for installation

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Better Performance

Good Brand Name NGK

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IRIDIUM POWER

DENSO 5344

Single Quantity

No Core Charge Req.

Weight: 0.11lbs

Authentic Product

NGK Spark Plugs Brand

Sold in sets of Individual Pack

Often specified as original equipment, NGK spark plugs are the best combination of performance and longevity.

Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer

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.

Offering the Quality, Reliability and Durability You'd Expect from an OEM Manufacturer

NGK is the world's largest supplier of OEM spark plugs

This 6 pack NGK Laser Iridium 6994 Spark Plug replaces Autolite XP5224, Honda 9807B-5617W, Honda 9807B5617WA0, DENSO Auto Parts 3377, DENSO Auto Parts 4504, DENSO Auto Parts 5615, DENSO Auto Parts

REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, and enables better performance so that your engine runs at its best. The durable shell reliably protects the spark plug from damage, ensuring long-lasting sparking capabilities. The center and ground electrodes promote sharper spark focus for fewer misfires

IMPROVE IGNITION AND SPARK EFFICIENCY: This Spark Plug employs advanced center and ground electrodes to produce complete and efficient combustion and deliver an outstanding spark for faster, stronger, and more powerful combustion over the life of the spark plug. The damage-tolerant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency

BKR6EIX-11

Spark Plug

NGK 5787 Spark Plug - Pack of 4 (5787)

fit type: Vehicle Specific

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Iridium LONG LIFE

DENSO 3324