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2003 Chevrolet Suburban 1500 - Spark Plugs

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Denso Iridium Power Spark Plug - 5325

Part #:: 5325
Line:: DEN

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 16

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NGK Iridium Plug Number LTR6IX-11 Spark Plug - 6509

Part #:: 6509
Line:: NGK

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14-1.25

Heat Range: 6

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NGK Iridium Plug Number TR55IX Spark Plug - 7164

Part #:: 7164
Line:: NGK

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14-1.25

Heat Range: 5

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ACDelco Professional Iridium Spark Plug - 41-988

Part #:: 41-988
Line:: ACD

7 Year Limited Warranty

Seat: Tapered

Thread Size: M14-1.25

Heat Range: 12