Top 10 Best Iridium Spark Plugs With Buying Guide

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Our team studied on 50182 reviews available online for Iridium Spark Plugs, chose the finest ones and prepared Iridium Spark Plugs Reviews for you. It was very difficult to shortlist the ideal Iridium Spark Plugs from thousands of products online. However, We tried to make sure that you get only the Best Iridium Spark Plugs from our suggestions. Check our listings-:

Best Iridium Spark Plugs
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NoProductScoreAction
1NGK 5464 BKR5EIX-11 Iridium IX Spark Plug9.8Check it on Amazon
2Autolite XP3922-4PK Iridium XP Spark Plug9.8Check it on Amazon
3Denso # 5304 IRIDIUM Power Spark Plugs -- IK20 --- 6 PCSNEW --9.4Check it on Amazon
46 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 44699.4Check it on Amazon
5NGK Iridium IX Spark Plugs TR55IX # 71649.4Check it on Amazon
6NGK Set of 6 Laser Iridium Spark Plugs For Lexus GS300 GS450h IS250 IS350 V69.2Check it on Amazon
7NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix)9Check it on Amazon
8NGK LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix)9Check it on Amazon
9NGK # 1465 Laser Iridium Spark Plug IZTR5B11 --- 8 PCSNEW8.6Check it on Amazon
10NGK 6619 Iridium Spark Plugs LFR6AIX-11 - 6 PCSNEW8.2Check it on Amazon

Comparison Chart for Best Iridium Spark Plugs

50182 reviews were considered when writing our recommendations for the Iridium Spark Plugs in this article.

Table Of Content:

1. NGK 5464 BKR5EIX-11 Iridium IX Spark Plug

  • Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.
  • 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; Part number of spark plug inside the box: BKR5EIX-11

2. Autolite XP3922-4PK Iridium XP Spark Plug

  • Iridium-enhanced 0.6mm finewire design for optimal durability and performance
  • V-trimmed ground electrode for improved ignitability
  • Platinum protected ground wire for maximum efficiency in all ignition types
  • Better overall ignitability and optimum performance
  • Limited lifetime warranty

3. Denso # 5304 IRIDIUM Power Spark Plugs — IK20 — 6 PCSNEW —

  • FREE SHIPPING to anywhere IN USA and territories For This Item
  • IRIDIUM POWER
  • DENSO 5304
  • 1order = 6 Pieces

4. 6 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 4469

  • 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.
  • Precision laser electrode construction.

5. NGK Iridium IX Spark Plugs TR55IX # 7164

  • Sold in packs of 8

6. NGK Set of 6 Laser Iridium Spark Plugs For Lexus GS300 GS450h IS250 IS350 V6

7. NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix)

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

8. NGK LKAR6AIX-11 Iridium IX Spark Plug (91187 Iridium Ix)

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

9. NGK # 1465 Laser Iridium Spark Plug IZTR5B11 — 8 PCSNEW

  • Laser Iridium Premium
  • 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

10. NGK 6619 Iridium Spark Plugs LFR6AIX-11 – 6 PCSNEW

  • 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

Iridium Spark Plugs Buying Guide


Does the thought of finding a great Iridium Spark Plugs stress you out? Has your mind been juggling between choices when it comes to buying Iridium Spark Plugs in general, specifically regarding which model to choose?
If that’s the case, know that you’re not alone. Many people find it tough to buy the perfect Iridium Spark Plugs for themselves. We understand the stress associated with the buying process!
Since you’re here, you are obviously curious about Iridium Spark Plugs Reviews. You’ve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs.
There are many sources that’ll provide you with that information- buying guides or ratings websites, word-of-mouth testimonials from friends or family members, online forums where users share their personal experiences, product reviews specifically found all over the internet and YouTube channels. Only thorough research will ensure that you get the right product.
But that’s not always easy, right? That's why we've taken time to compile a list of the best Iridium Spark Plugs in today's market, on your behalf, so that there will be no more worries for you.
How did we come up with the list, you ask? How did we create this buying guide?
  • First, our algorithms collected as much information available about these products from trusted sources.
  • We employed both Artificial Intelligence and large data volume to validate all collected information.
  • Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Iridium Spark Plugs currently on the market!
The products aren’t chosen randomly. We consider several criteria before assembling a list. Some of the criteria are discussed below-
  1. Brand Value: What happens when you go for a not-so-reputable brand just because the price seems cheap? Well, the chance of getting a short-lasting product goes higher. That’s because the renowned brands have a reputation to maintain, others don’t.
Top Iridium Spark Plugs brands try to offer some unique features that make them stand out in the crowd. Thus hopefully, you’ll find one ideal product or another in our list.
  1. Features: You don’t need heaps of features, but useful ones. We look at the features that matter and choose the top Iridium Spark Plugs based on that.
  2. Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products of higher specifications, but with the right balance.
  3. Customer Ratings: The hundreds of customers using the Iridium Spark Plugs before you won’t say wrong, would they? Better ratings mean better service experienced by a good number of people.
  4. Customer Reviews: Like ratings, customer reviews give you actual and trustworthy information, coming from real-world consumers about the Iridium Spark Plugs they used.
  5. Seller Rank: Now, this is interesting! You don’t just need a good Iridium Spark Plugs, you need a product that is trendy and growing in sales. It serves two objectives. Firstly, the growing number of users indicates the product is good. Secondly, the manufacturers will hopefully provide better quality and after-sales service because of that growing number.
  6. Value For The Money: They say you get what you pay for. Cheap isn’t always good. But that doesn’t mean splashing tons of money on a flashy but underserving product is good either. We try to measure how much value for the money you can get from your Iridium Spark Plugs before putting them on the list.
  7. Durability: Durability and reliability go hand to hand. A robust and durable Iridium Spark Plugs will serve you for months and years to come.
  8. Availability: Products come and go, new products take the place of the old ones. Probably some new features were added, some necessary modifications were done. What’s the point of using a supposedly good Iridium Spark Plugs if that’s no longer continued by the manufacturer? We try to feature products that are up-to-date and sold by at least one reliable seller, if not several.
  9. Negative Ratings: Yes, we take that into consideration too! When we pick the top rated Iridium Spark Plugs on the market, the products that got mostly negative ratings get filtered and discarded.

These are the criteria we have chosen our Iridium Spark Plugs on. Does our process stop there? Heck, no! The most important thing that you should know about us is, we're always updating our website to provide timely and relevant information.
Since reader satisfaction is our utmost priority, we have a final layer of filtration. And that is you, the reader! If you find any Iridium Spark Plugs featured here Incorrect, irrelevant, not up to the mark, or simply outdated, please let us know. Your feedback is always welcome and we’ll try to promptly correct our list as per your reasonable suggestion.

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