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Autolite Iridium Ultra

Autolite Iridium XP Automotive Replacement Spark Plugs, XP6203 (4 Pack)

  • Based on 1,081 reviews
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Availability: In Stock.
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Arrives Thursday, Oct 22
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Features

  • 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
  • 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
  • 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

Description

Autolite Iridium XP is designed and engineered in the USA, is one of the brand's most technologically advanced spark plugs ever. These spark plugs provide better durability and a more focused ignition for better overall ignitability and optimum performance. Autolite Iridium XP spark plugs function for all makes and models, both foreign and domestic, provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products. Consider upgrading to Autolite iridium XP spark plugs for increased performance. Autolite Iridium XP spark plugs are backed by an unmatched limited lifetime warranty.

Brand: Autolite Iridium Ultra


Core Material: Iridium


Thread Size: 14mm


Top Material Type: Nickel


Vehicle Service Type: Car, Truck


Brand Name: Autolite Iridium Ultra


Manufacturer Part Number: XP6203-4PK


Global Trade Identification Number: 20, 37


Number of Items: 4


Item Highlight: Replaces 3478 7410 DILKR7A-11. 40k-60k mileage rated.


UPC: 009100268020 009100268037


Unit Count: 4 Count


OEM Equivalent Part Number: XP6203-4PK


Included Components: 4 Iridium Spark Plugs


Item Weight: 6.4 ounces


Item Type Name: Spark Plug


Manufacturer: FRAM


Model Number: XP6203-4PK


Manufacturer Warranty Description: Lifetime Limited Warranty


Thread Size: 14mm


Compatible with Vehicle Type: Car, Truck


Automotive Fit Type: Vehicle Specific Fit


Core Material: Iridium


Top Material Type: Nickel


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Repairs made easy
Size: 4-Pack
These worked great for my car. Swapped out the old plugs and the engine started running smoother right away. Acceleration feels better and the idle is nice and steady now. Super easy install and they seem really well made. For the price it's a no brainer if you want to do some quick maintenance yourself. I'd definitely buy them again next time I need a tune up. ... show more
Reviewed in the United States on October 20, 2025 by Phil
    • Just what I needed
Size: 4-Pack
Good price,good quality, and perfect fit for a 1.6l kia soul
Reviewed in the United States on February 10, 2026 by Jordan Stewart
    • Great spark plugs
Size: 4-Pack
My car eats a set of spark plugs every 30k miles. I’ve tried all the expensive brands hoping to find some that last longer, these seems to perform just as well and last just as long as those top tier brands.
Reviewed in the United States on July 12, 2025 by IntrepidFlea93
    • Works for my Optima
Size: 4-Pack
Put these in to replace some old spark plugs in a 2015 Optima that had 85k miles. Works with no issues.. my gas mileage seems to be slightly better though I may need to drive a little more to determine that. My engine seems to be a bit quieter when accelerating as well. Haven't noticed much difference in acceleration or anything like that. Smooth idle as well. Nothing else really to say ... show more
Reviewed in the United States on December 17, 2024 by K Slice
    • Great part great price for 2013 Kia Soul
Size: 4-Pack
Spark plugs bought for 2013 Kia Soul. Parts fit and have had no issues for months. Great price for them. The same brand was triple the price at O'Reillys
Reviewed in the United States on September 18, 2025 by Sahreth 'Baphy' Bowden
    • Reliable Performance Spark Plugs for Your Vehicle
Size: 4-Pack
I recently purchased the Autolite Iridium XP Automotive Replacement Spark Plugs, specifically the XP6203 model in a convenient 4-pack, and I must say that they have delivered reliable performance for my vehicle. First and foremost, the build quality of these spark plugs is impressive. The iridium construction ensures durability and longevity, allowing the plugs to withstand the demanding conditions under the hood of my vehicle. I appreciate the peace of mind that comes with knowing I have high-quality spark plugs installed. Installation was a breeze, and the spark plugs fit perfectly in my engine. The precise engineering of these plugs ensures a proper fit, allowing for optimal performance and efficient combustion. I experienced no issues with misfires or compatibility, and the plugs integrated seamlessly into my vehicle's ignition system. In terms of performance, the Autolite Iridium XP spark plugs have met my expectations. They provide a reliable spark, ensuring smooth engine starts and consistent ignition throughout my driving experience. I noticed improved throttle response and acceleration, resulting in a more enjoyable and responsive driving experience. Furthermore, the iridium tips of these spark plugs contribute to their longevity. They offer excellent wear resistance, minimizing electrode erosion and extending the lifespan of the plugs. I appreciate the fact that I won't have to worry about frequent replacements or decreased performance due to worn-out spark plugs. However, I would like to mention that while the Autolite Iridium XP spark plugs perform well, they may not necessarily provide a significant boost in performance compared to standard spark plugs. While I did notice improvements in throttle response and acceleration, the difference may not be as noticeable for all vehicles and driving conditions. In conclusion, the Autolite Iridium XP Automotive Replacement Spark Plugs, specifically the XP6203 model, offer reliable performance and durability for your vehicle. The high-quality construction, ease of installation, and improved throttle response make them a worthy investment. While they may not provide a dramatic performance boost for all vehicles, they are still a reliable choice for maintaining optimal ignition and engine performance. I would recommend these spark plugs to fellow car enthusiasts who are looking for reliable replacements for their worn-out plugs. ... show more
Reviewed in the United States on July 2, 2023 by Mario Carcano
    • So far so good.
Size: 4-Pack
People seem to say autolite are not as good but I can't really narrow down why some people think they're lower quality. Do they not spark as well, are they cheaper material? Apart from few negative reviews where they say the spark plugs failed (which tends to be present with all products), it's hard to narrow down why these are inferior. This is the second set I've bought (first was for a different vehicle) and they have been working fine with the first set been fine for over a year so far on my other car. I'm going to be replacing the spark plugs around 40,000 anyways especially with this cheaper price, so I'm not worried. Maybe they wear out after 100,000 miles instead of 150,000 like the "better" brands but I won't be using them that long. ... show more
Reviewed in the United States on May 16, 2021 by KS Review
    • 👌
Size: 4-Pack
👌 👌 👌
Reviewed in the United States on May 1, 2026 by Yonel Yali

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