I would recommend you get one from the dealer. It may cost you a few bucks more, but you will rest assure that it is the right one for the car. I found buying one from an auto store or Sears really does not save you all that much money. I knew because I bought one for my SL from the dealer to replace the OEM one that came with the car in '95.

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95 R129
04 Infiniti G35.5 BS
10 X204