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1991 International 4700 - Spark Plugs

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Autolite Double Platinum Spark Plug - APP5325

Part #:: APP5325
Line:: ATO

5 Year Limited Warranty

Metallurgy: Double Platinum

Center Electrode Tip Material: Platinum

Ground Electrode Tip Material: Platinum

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Autolite Platinum Spark Plug - AP5325

Part #:: AP5325
Line:: ATO

4 Year Limited Warranty

Metallurgy: Platinum

Center Electrode Tip Material: Platinum

Ground Electrode Tip Material: Nickel

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Autolite Copper Core Spark Plug - 5325

Part #:: 5325
Line:: ATO

2 Year LIMITED WARRANTY

Metallurgy: Copper

Center Electrode Tip Material: Nickel

Ground Electrode Tip Material: Nickel

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E3 Spark Plugs Diamond Fire Spark Plug - E3.68

Part #:: E3.68
Line:: ETH

5 Year Limited Warranty

Metallurgy: Copper

Center Electrode Tip Material: Nickel

Ground Electrode Tip Material: Nickel

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E3 Spark Plugs Diamond Fire Spark Plug - E3.82

Part #:: E3.82
Line:: ETH

5 Year Limited Warranty

Metallurgy: Copper

Center Electrode Tip Material: Nickel

Ground Electrode Tip Material: Nickel

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Autolite Iridium XP Spark Plug - XP5325

Part #:: XP5325
Line:: ATO

Limited Lifetime Warranty

Metallurgy: Iridium/Platinum

Center Electrode Tip Material: Iridium

Ground Electrode Tip Material: Platinum