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Autolite APP3924 Double Platinum Automotive Replacement Spark Plugs (4 Pack)

  • Based on 528 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Clearwater Supply

Arrives Jun 17 – Jun 19
Order within 8 hours and 47 minutes
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Number of Items: 4


Features

  • MAXIMUM PERFORMANCE: Every Double Platinum spark plug is necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration. Full copper core electrode provides better performance in all conditions
  • IMPROVED DURABILITY: Our spark plugs are platinum-to-platinum firing for superior durability and super conductive Yttrium enhanced ground electrode provides superior heat transfer
  • CONSTRUCTION: These spark plugs are platinum enhanced high nickel alloy side electrode maintains precision gap and assures virtually no gap erosion for longer plug life
  • high nickel alloy side electrode maintains precise gap
  • 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 plugs needs

Description

Autolite Double Platinum Spark Plugs have better materials to give your engine better performance. Platinum-to-platinum design greatly decreases gap erosion, reduces misfires, and provides improved durability compared to standard plugs. It's the superior-performing spark plug, providing preferred technology for DIS engines. 5-year limited warranty

Brand: Autolite Iridium Ultra


Core Material: Copper


Top Material Type: Nickel


Vehicle Service Type: Car, Truck


Global Trade Identification Number: 50


Brand Name: Autolite Iridium Ultra


Manufacturer Part Number: APP3924-4PK


Global Trade Identification Number: 50


UPC: 009100259950


OEM Equivalent Part Number: APP3924-4PK


Model Number: APP3924-4PK


Unit Count: 4.0 Count


Manufacturer Warranty Description: Manufacturer


Included Components: Platinum Spark Plug


Item Type Name: Double Platinum Spark Plug


Item Weight: 0.44 Pounds


Manufacturer: Autolite


Compatible with Vehicle Type: Car, Truck


Automotive Fit Type: Vehicle Specific Fit


Gap Size: 0.04 Inches


Core Material: Copper


Top Material Type: Nickel


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 17 – Jun 19

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.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Good spark plugs and a good price
Number of Items: 4
They worked great on my 2005 VTX 1800c Honda
Reviewed in the United States on June 30, 2025 by Ricky Ed

  • Spark plugs
Number of Items: 4
They work great. Good price.
Reviewed in the United States on July 27, 2025 by Great product

  • Calidad de bujias TOP
Number of Items: 4
Son productos de la mas alta calidad a un precio bastante bueno, calzaron perfecto en el vehículo Suzuki Grand Vitara, dentro de algún tiempo ajustare mi comentario de ser necesario
Reviewed in the United States on November 1, 2025 by Cesar Quintero

  • Installed and engine started
Number of Items: 4
These plugs went in my engine without issues and the engine started. It runs great and I have no complaints about the function. My issues with the plugs are quality control. Four plugs came gapped at different distances from .030 to .050. That I pretty much anticipated and would not rely on factory pre-gaps anyway. More interesting is what appears as a "shearing" of the base electrode during manufacturing which results in a slightly twisted end and some uneven end. This makes for a slightly different gap at one end of the electrode than the other. Fortunately a very thin, long file was able to quickly remove that and make it even again. For the price, they are certainly worth what you get. ... show more
Reviewed in the United States on April 13, 2022 by Henry Wolford

  • Amazing cost. Easy to install in the Toyota 4 cyl.
Number of Items: 4
Absolutely perfect pricing. Just a few bucks a plug for high Quality Double Platinum. I have no idea how they can make these (and sell them) so cheaply. Great product, worked flawlessly in the Toyota!
Reviewed in the United States on October 27, 2023 by Skippy S.

  • It’s ok
Number of Items: 4
It’s ok
Reviewed in the United States on July 23, 2025 by Amaz_Onn_Dood

  • very good
Number of Items: 4
works well
Reviewed in the United States on May 3, 2025 by seyed j mojtabaei

  • Nice plug for a nice plug.
Number of Items: 4
Mileage? Longevity? I just put them in yesterday. we shall see. All I know is that I installed them easily, along with new ignition coils, and the car ran great as soon as I turned the key. My car had been running so rough that I was convinced the entire car was falling apart. No. I just needed new plugs and these are working quite well. ... show more
Reviewed in the United States on October 13, 2021 by Bezweifeln

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