Copper Spark Plug
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Autolite Copper Spark Plug

Part No. 437 Warranty Details  

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Autolite Copper Spark Plugs are guaranteed to deliver quick starts, good fuel economy and smooth acceleration.

Product Features:
  • Copper cored center electrode for higher thermal conductivity
  • Specially engineered high nickel alloy center and ground electrode for extended life
  • High alumina ceramic for high dielectric strength
  • Leak proof, heat fused internal seal for durability
  • Multi-rib insulator prevents flash-over
  • 2 year limited warranty
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Electrode Tip Material:Non Resistor
Reach:7/16 in
Resistor:Non Resistor
Seat Type:Gasket
Thread Diameter:14 mm
Tip Configuration:Power
Wrench Diameter:13/16 in


by PowerReviews
AutoliteCopper Spark Plug

(based on 1 review)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 1 customer

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(2 of 4 customers found this review helpful)


Great for Ford N-Series tractors


from Grand Rapids, MI

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3 or more reviews submitted


  • Durable
  • Easy To Install


    Best Uses

    • Replacement
    • Restoration

    Comments about Autolite Copper Spark Plug:

    This plug works great in my 1945 Ford 2n tractor. I put a fresh set in every 4-5 years and they usually look like they don't really need replacement. But for the price is good preventative maintenance.

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