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Spark Plugs

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Autolite Iridium Ultra Spark Plug - AI5325

Part #:: AI5325
Line:: ATO

Limited Lifetime Warranty

Metallurgy: Iridium/Platinum

Center Electrode Tip Material: Iridium

Ground Electrode Tip Material: Platinum

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Autolite Racing Hi-Performance Spark Plug - AR5324

Part #:: AR5324
Line:: ATO

1 Year Limited Warranty

Metallurgy: Copper

Center Electrode Tip Material: Nickel

Ground Electrode Tip Material: Nickel