Double Platinum Spark Plugs
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Double Platinum Spark Plugs
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Autolite Double Platinum Spark Plugs

Part No. APP26 Warranty Details  
Quantity  Add to Cart

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This premium plug provides outstanding performance and platinum-to-platinum firing

Product Features:
  • Super conductive Yttrium enhanced ground electrode provides superior heat transfer
  • Platinum enhanced high nickel alloy side electrode maintains precision gap
  • Platinum tip assures virtually no gap erosion for longer plug life
  • Easier starts, quicker acceleration and improved fuel efficiency
  • Heat range precisely set by Ionization Sensing Technology
  • Lifetime Limited Warranty*
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Electrode Tip Material:Double Platinum
Reach:.460 in
Seat Type:Tapered
Thread Diameter:14 mm
Tip Configuration:Power
Wrench Diameter:5/8 in


by PowerReviews
AutoliteDouble Platinum Spark Plugs

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

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(9 of 10 customers found this review helpful)


Each plug had smuges and grease on them


from Tallmadge, Ohio

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3 or more reviews submitted


  • Easy To Install
  • Improves Engine Efficiency


  • Returned by someone

Best Uses

  • Replacement

Comments about Autolite Double Platinum Spark Plugs:

The plugs all had smudges and grease on them out of the box, could tell they were cleaned and the boxes were opened before I purchased them.

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Do you have questions about this product?


Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    is this plug for 5.7 liter gas engine?
    Asked on 8/18/2011 by Anonymous

    1 answer



      To know the exact fit applications, please provide the year, make, model and engine size of the vehicle in question.

      Answered on 8/18/2011 by Dennis from AAP
  • Q:

    I was sold this plug (APP26) for my vehicle, a 1972 El Camino with a 307cc in engine and 2bbl carb. Your catalog says this is not for my truck, I should be using APP145. Is this correct, what is the difference? Thanks
    Asked on 11/2/2010 by Guppie from Pgh, Pa

    1 answer



      I do not know why you were sold APP26, but it is not for your vehicle at all. I recommend returning the plugs and get the APP145 which is the correct plug for your vehicle.

      Answered on 11/11/2010 by Mike the Auto Parts Master from AAP
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