Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration, Autolite Copper Core spark plugs are designed to meet or exceed design requirements. Consider upgrading to Autolite platinum, double platinum or iridium XP plugs for improved engine performance. Copper Core plugs are the industry standard.

• Copper-glass seal bonded insulator, terminal post, and center electrode provide a tight seal that is 100 percent leak-proof
• Multi-rib insulator reduces danger of "flash over" to prevent misfires
• Full copper core electrode improves heat transfer and optimizes plug life

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