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2004 GMC Envoy - Spark Plugs

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Autolite Iridium Ultra Spark Plug - AI5263

Part #:: AI5263
Line:: ATO

Limited Lifetime Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 11

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Autolite Iridium XP Spark Plug - XP5263

Part #:: XP5263
Line:: ATO

Limited Lifetime Warranty

Seat: Tapered

Thread Size: M14-1.25

Heat Range: 11

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Bosch Fine Wire Double Iridium Spark Plug - 96301

Part #:: 96301
Line:: BOS

5 Year Limited Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 8

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NGK Iridium/Platinum Plug Number ILTR5E11 Spark Plug - 91418

Part #:: 91418
Line:: NGK

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14-1.25

Heat Range: 5

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ACDelco Iridium IP Spark Plug - 41-103

Part #:: 41-103
Line:: ACD

7 Year Limited Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 5

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Denso Iridium Long Life Spark Plug - 3539

Part #:: 3539
Line:: DEN

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 16

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NGK Iridium Plug Number LTR5IX-11 Spark Plug - 4344

Part #:: 4344
Line:: NGK

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14-1.25

Heat Range: 5

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Champion Iridium Plug Number RES12WYPB4 Spark Plug - 9300

Part #:: 9300
Line:: CHP

2 Year LIMITED WARRANTY

Seat: Tapered

Thread Size: M14

Heat Range: 12