Autolite 4303 Copper Resistor Spark Plug


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as of 12/02/2023 (Details)

Autolite Copper Core spark plugs are your industry standard, guaranteed to deliver quick starts, good fuel economy, and smooth acceleration. Since its inception, the Autolite brand has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products. Autolite has been in operation for over 100 years and has produced more than 11 billion spark plugs and glow plugs. These plugs are specifically designed for each application to meet or exceed OE quality and performance. Autolite makes plugs for Japanese, European, and Korean cars as well as plugs for Lawn & Garden and Power Sports. As a leading supplier of spark plugs, the Autolite brand has the right ignition products for your application, regardless of make or model, import or domestic.

Technical Details

  • Full copper core electrode with necked down tip for improved ignitibility provides better performance in all conditions
  • Cold-formed steel shell and precision rolled threads, with anti-corrosive nickel plated shell
  • Gas-tight seal (100 percent leak-proof) and reduced RFI (radio frequency interference)
  • One-piece terminal post for added strength and multi-rib insulator reduces danger of "flash-over"
  • Copper-glass, resistive seal bonds insulator, terminal post, and center electrode together ensures full required voltage at spark gap

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