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1991 Cadillac DeVille - Spark Plugs

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Autolite Iridium Ultra Spark Plug - AI5364

Part #:: AI5364
Line:: ATO

Limited Lifetime Warranty

Seat: Tapered

Thread Size: M14-1.25

Heat Range: 11

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Autolite Iridium XP Spark Plug - XP5364

Part #:: XP5364
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 - 9616

Part #:: 9616
Line:: BOS

7 Year Limited Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 7

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Denso Iridium TT Spark Plug - 4719

Part #:: 4719
Line:: DEN

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 20

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Denso Iridium Power Spark Plug - 5339

Part #:: 5339
Line:: DEN

1 Year Limited Warranty

Seat: Tapered

Thread Size: M14

Heat Range: 20

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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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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

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Champion Iridium Plug Number RES9WYPB4 Spark Plug - 9901

Part #:: 9901
Line:: CHP

2 Year LIMITED WARRANTY

Seat: Tapered

Thread Size: M14

Heat Range: 10