10 Best Iridium Spark Plugs of 2025

Tested and Reviewed: Top 10 Iridium Spark Plugs deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

NGK

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

Free Shipping

Editor's bottom line:

“This iridium spark plugs is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

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
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

Show Price

Picked by 397 people today

9.5

NGK

NGK 6619 Iridium Spark Plugs LFR6AIX-11-6 Pack

Free Shipping

Main Highlights

Iridium Spark Plugs
Designed to operate over a much wider heat range than ordinary plugs
Resists carbon buildup and pre-ignition
Patented triple gasket sealing process eliminates the possibility of combustion gas leakage

Show Price

9.5

NGK

NGK Iridium IX Spark Plugs Compatible with Chevrolet Silverado 1500 5.3L 6.2L V8 2014-2024 (8 Pack)

Free Shipping

Main Highlights

This Listing is for 8 LTR5IX11 NGK Spark Plugs
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 corrosion-resistant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency
REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, reduces emissions, and enables better fuel economy so that your engine runs at its best; The durable shell reliably protects the spark plug from corrosion, ensuring long-lasting sparking capabilities; The center and ground electrodes promote sharper spark focus for fewer misfires
TRUST IN NGK NTK: Explore components built by the world leader in the design of spark plugs and oxygen sensors; Their attention to performance excellence is what has differentiated them from the competition and allowed them to be the number one supplier of spark plugs and oxygen sensors

Show Price

9.2

A-NAFTULY

Iridium Spark Plugs 6 Pack XP5701 Fits for 2011-2021 3.6 Dodge Challenger Charger Durango Grand Caravan Journey & Jeep Grand Cherokee Wrangler & Chrysler 200 300 Town and Country & Ram 1500 V6 3.6L

Free Shipping

Main Highlights

[Reference Number]: XP5701, 7751, 9407
[Vehicle Fitment-1]: This automotive replacement spark plugs for Dodge Challenger Charger Durango Grand Caravan Journey V6 3.6 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021, Dodge Avenger 3.6L 2011-2014 | Spark plugs for Chrysler 300 V6 3.6 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021, Chrysler 200 Town & Country 3.6L 2011-2017, Chrysler Pacifica 3.6L 2017-2021
[Vehicle Fitment-2]: This oem spark plugs for Jeep Grand Cherokee Wrangler V6 3.6 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021, Jeep Cherokee 3.2L 2014-2021 | Spark plugs for Ram 1500 V6 3.6 2013 2014 2015 2016 2017 2018 2019 2020 2021, Ram 1500 Classic V6 3.6L 2019-2021, Ram Promaster 1500 2500 3500 V6 3.6L 2014-2021, Ram C/V V6 3.6L 2012-2015
[Vehicle Fitment-3]: This spark plugs replacement for Acura MDX RLX TLX V6 3.5L 2014 2015 2016 2017 2018 2019 2020 | Spark plugs for Honda Odyssey Pilot V6 3.5L 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021, Honda Passport 3.5L 2019-2020, Honda Ridgeline 3.5L 2017-2020 | for VW Routan V6 3.6L 2011-2014. For more vehicle details, please refer to the pictures and description
[Premium Material]: The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, Ideal for today's high performance engines
[Package Included]: Set of 6 Iridium Spark Plugs. To give you peace of mind, We offer 12-month worry-free-warranty, If you encounter any issues with the spark plug you purchased from A-NAFTULY store,our dedicated customer support team is ready to assist you

Show Price

9.0

NGK

NGK LKR7DIX-11S Iridium IX Spark Plug (93175 Iridium Ix), 4 Pack

Free Shipping

Main Highlights

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
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. Resistor Value-5K Ohm. Hex Size-5/8 inch

Show Price

8.8

A-Premium

A-Premium Double Iridium Spark Plugs Compatible with Nissan Altima 2013-2018, Rogue 2014-2020, 2.5L, Pack of 4

Free Shipping

Main Highlights

[Reference Number]: 94702, DF6H-11A, DF6H11A, 1UXE18110, BY483DF6H0
[Vehicle Fitment]: Compatible with Nissan Altima 2014-2018 L4 2.5L, Altima 2013-2013 L4 2.5L(Sedan; Body code L33), Rogue 2016-2020 L4 2.5L, Rogue 2014-2015 L4 2.5L(New Body Style)---Gap 0.044 inch
[Specifications]: Center Electrode Tip Material: Iridium; Center Electrode Core Material: Iridium; Resistance (ohms): 5000; Gap Size (IN): 0.044 Hex Size (IN): 0.55; Insulator Height (mm): 51.00; Reach (mm): 26.50; Thread Diameter (MM): 12.00
[Exceptional Ignitability]: Designed alongside OEMs and engineered for maximum ignition performance
[Extensive Mileage Range]: For optimal engine performance and longevity, it is recommended to replace double iridium spark plugs at mileage intervals of 100,000 to 120,000 miles

Show Price

8.6

NGK

NGK Iridium IX Spark Plug LFR5AIX-11 (4 Pack) Compatible With TOYOTA CAMRY LE 2010-2014 2.5L/2494cc

Free Shipping

Main Highlights

Engine L4, Engine Size 2.5L/2494cc
Engine Family 4-cylinder
Fine wire Iridium center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-performance engines
Shorty Spark Plug: No. Resistor: Yes. Manufacturer Heat Range: 5. Electrode Tip Material: Iridium. Electrode Core Material: Copper. Insulator Type: Projected. Spark Plug Thread Size: 14mm. Spark Plug Reach: 1.043 in. Spark Plug Seat Style: Gasket. Wrench Diameter: 5/8 in. Ground Strap Quantity: One
Sold In 4 Pack

Show Price

8.3

ACDelco

ACDelco 41-962 Professional Platinum Spark Plug, (8)

Free Shipping

Main Highlights

One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
Some ACDelco GM Original Equipment parts may have formerly appeared as ACDelco Professional

Show Price

8.1

NGK

NGK (4469) LFR5AIX-11 Iridium IX Spark Plug (8 Pack)

Free Shipping

Main Highlights

8 pack NGK Iridium IX 4469 Spark Plug
Genuine NGK Parts
Includes original packaging and hardware
Direct replacement auto parts
Confirm vehicle fitment with Amazon Confirmed Fit

Show Price

8.1

A-Premium

A-Premium Iridium Platinum Spark Plugs Compatible with Honda CR-V, Civic, Accord, Crosstour & Hyundai Elantra, Elantra Coupe/GT, Sonata, Santa Fe, Santa Fe Sport, Tucson, Venue & Kia Soul, Pack of 4

Free Shipping

Main Highlights

[Reference Number]: 93175, LKR7DIX-11S, XP5702, XP6203, LKR7DIX11S, 97390, LKR7BGPS, 96358, LKR7AHXS, 95710, DILZKR7B11GS
[Vehicle Fitment-1]: Compatible with Kia Forte 2014-2016 L4 1.8L, Forte/Forte5 2014-2018 L4 2.0L, Forte Koup/Rondo 2014-2017 L4 2.0L, Compatible with Optima/Sportage 2016-2020 L4 2.4L, Sorento 2016 L4 2.0L, Sorento 2015-2020 L4 2.4L, Soul 2012-2019 L4 2.0L; Compatible with Acura ILX 2013-2015 L4 2.0L/L4 2.4L, TSX 2009-2014 L4 2.4L; Compatible with Honda Accord 2008-2012 L4 2.4L, Civic 2012-2015 L4 1.8L/L4 2.4L, CR-V/Crosstour 2012-2015 L4 2.4L
[Vehicle Fitment-2]: Compatible with Hyundai Elantra 2012-2016 L4 1.8L, Compatible with Elantra 2014-2015 L4 2.0L, Compatible with Elantra Coupe/Elantra GT 2013 L4 1.8L, Compatible with Elantra Coupe 2014 L4 2.0L, Compatible with Elantra GT/Tucson 2014-2020 L4 2.0L, Santa Fe 2019-2020 L4 2.4L, Santa Fe Sport 2016-2018 L4 2.4L, Sonata 2015 L4 2.0L, Sonata 2015-2019 L4 2.4L, Tucson 2018-2020 L4 2.4L, Venue 2020 L4 1.6L
[Specifications]: Center Electrode Tip Material: Iridium; Center Electrode Core Material: Platinum; Resistance (ohms): 5000; Gap Size (IN): 0.044; Hex Size (IN): 5/8; Insulator Height (mm): 51; Reach (mm): 26.5; Thread Diameter (MM): 12
[Engineered for Longevity]: For optimal engine performance and longevity, it is recommended to replace platinum iridium spark plugs at mileage intervals of 80,000 to 100,000 miles

Show Price

Our Best Overall Choice

Best Choice

9.7

NGK

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

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

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
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

Show Price

Deals are Live

Special Amazon deal ends in: