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This is the Knock Sensor Sub Harness found on all Nissan 350Z and Infiniti G35 models equipped with the VQ35DE Engine. When this harness fails you will see a Check Engine Light with the code P0327.

P0327 Codes are caused by either a low output voltage seen by the ECU from the knock sensor pointing to a faulty sensor or a short or open knock sensor circuit.  
While most often this code is indicative of a faulty knock sensor sub harness, sometimes the sensors do go bad you can elect to purchase both below and save.

Z1 also sells new OEM Knock Sensors HERE and can be included for a discounted price as an option below.

NOTE: G35 models with a build production date before 06/03 MUST purchase a new style knock sensor with the harness. The original knock sensor on G35's built prior to 06/03 is different, and cannot be connected with this new style harness. The optional knock sensor below is a new-style type sensor and will allow you to use the newer style knock sensor sub harness sold here.


  • 2003-2006 Nissan 350Z
  • 2003-2007 Infiniti G35 Coupe
  • 2003-2006 Infiniti G35 Sedan
  • 2003-2008 Infiniti FX35

This is intended for the above listed models ONLY. Fitment on FWD VQ's (Maxima, Altima, etc.) has not been confirmed.

Available Options:

Knock sensor:

*** This item does not qualify for any additional discounts or promotions ***


What our customers say...

This knock sensor sub harness is a must if you are getting a low knock sensor input signal code. Install ...

Rated by Verified Customer Purchase Read More

This fixed my P0327 fault code. The factory sub harness in these cars is very poor quality. Every time it ...

Rated by Verified Customer Purchase Read More

Have not installed the sub harness yet but am very impressed by Z1's speed of service/shipping. I live in Canada ...

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VERY happy with this item, ordered late Friday night and had it Monday afternoon! ...

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