10 Best spark plugs iridiums of 2025

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1

HRBLING

4pcs Ruthenium Spark Plug FR5AHX 95839 Upgrade SK16R11 IK16TT IFR5T11 BKR5EIX-11 Etc
9.8

Exceptional

Our Rating
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Value for Money

2

Sixity Auto

16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck
9.7

Exceptional

Our Rating
3

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

Extreme Ignitability and Throttle Response
Iridium IX offers extreme ignitability and improved throttle response for performance enthusiasts.

Ideal for High Performance Engines
Perfect for high-performance engines due to high melting point and durability.

Praised for Improved Fuel Efficiency
Customers frequently praise the product for boosting fuel efficiency and smoother engine performance.
9.6

Exceptional

Our Rating

9.9
Easy installation

9.5
worth the money

9.5
distance
4

NGK
NGK 6619 Iridium Spark Plugs LFR6AIX-11-6 PCSNEW
Main highlights

Wide Heat Range Operation
Designed to operate over a much wider heat range than ordinary plugs, ensuring reliable performance in various conditions.

Ideal for Long-Lasting Performance
Perfect for vehicles requiring durable spark plugs, such as Toyota RAV4 and Tacoma V6 engines.

Highly Recommended by Mechanics
Customers praise the NGK Iridium Spark Plugs for their longevity and improved engine performance.
9.5

Excellent

Our Rating

9.1
worth the money

9.1
Easy installation

8.9
distance
5

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

Extreme Ignitability and Durability
Iridium IX spark plugs offer extreme ignitability and superior anti-fouling, enhancing engine performance and longevity.

Ideal for High-Performance Engines
Perfect for performance enthusiasts, suitable for modern engines requiring high durability and stable spark.

Praised for Enhanced Performance
Customers rave about noticeable improvements in engine smoothness and fuel efficiency.
9.4

Excellent

Our Rating

9.5
worth the money

9.3
Long life

9.3
distance
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6

NGK

NGK Iridium IX Spark Plug LFR5AIX-11 (4 Pack) Compatible With TOYOTA CAMRY LE 2010-2014 2.5L/2494cc
9.3

Excellent

Our Rating
7

NGK
NGK Spark Plug SILZKBR8D8S 97506 Pack of 6
Main highlights

Superior Performance and Longevity
NGK Laser Iridium spark plugs offer enhanced engine performance and extended lifespan, ensuring reliability and efficiency for your vehicle.

Perfect for High-Performance Engines
Ideal for vehicles requiring high-performance spark plugs, providing optimal ignition and fuel efficiency.

Highly Rated Durability
Customers frequently praise the durability and consistent performance of NGK Laser Iridium spark plugs.
Key specs
- OEM Number:N/A
- Brand:NGK
- Top Material Type:Metal
- UPC:087295193570
- ASIN:B07PFX1RQM
9.0

Excellent

Our Rating
8

STZJAYE

STZJAYE 7164 TR55IX Iridium Spark Plugs 8Pack Compatible with Ford for F-150 for Expedition for Explorer 1994-2005, for Mustang for Blazer for Silverado 1500 for Impala for Tahoe
8.8

Very Good

Our Rating
9

NGK
NGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW
Main highlights

Iridium Technology for Enhanced Performance
NGK 6509 Iridium Spark Plug offers superior ignition and durability, ensuring optimal engine performance and longevity.

Ideal for Smooth Vehicle Operation
Perfect for maintaining smooth operation in vehicles like the GMC Acadia, enhancing acceleration and power.

Fast Shipping and Proper Gapping
Customers appreciate the quick delivery and correct gapping, ensuring easy installation and immediate use.
8.6

Very Good

Our Rating

9.5
Easy installation

9.3
worth the money

9.3
distance
10

NGK

NGK Iridium IX Spark Plugs Compatible with Chevrolet Silverado 1500 5.3L 6.2L V8 2014-2024 (8 Pack)
8.5

Good

Our Rating

10 Best spark plugs iridiums of 2025

1

4pcs Ruthenium Spark Plug FR5AHX 95839 Upgrade SK16R11 IK16TT IFR5T11 BKR5EIX-11 Etc

How do we rank?

How do we rank?

Analyzing top stores

2

16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2024 HEMI V8 truck

3

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

9.9

9.5

9.5

4

NGK 6619 Iridium Spark Plugs LFR6AIX-11-6 PCSNEW

9.1

9.1

8.9

5

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

9.5

9.3

9.3

6

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

7

NGK Spark Plug SILZKBR8D8S 97506 Pack of 6

8

STZJAYE 7164 TR55IX Iridium Spark Plugs 8Pack Compatible with Ford for F-150 for Expedition for Explorer 1994-2005, for Mustang for Blazer for Silverado 1500 for Impala for Tahoe

9

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

9.5

9.3

9.3

10

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

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