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2004 Chevrolet Silverado 2500 HD - Spark Plugs

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Bosch Platinum Spark Plug - 6704

Part #:: 6704
Line:: BOS

1 Year Limited Warranty

Metallurgy: Platinum

Center Electrode Tip Material: Platinum

Ground Electrode Tip Material: Nickel

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Autolite Iridium Ultra Spark Plug - AI5245

Part #:: AI5245
Line:: ATO

Limited Lifetime Warranty

Metallurgy: Iridium/Platinum

Center Electrode Tip Material: Iridium

Ground Electrode Tip Material: Platinum