Z1 HR / VHR Knock Sensor Service Kit

Z1 HR / VHR Knock Sensor Service Kit includes everything you need in order to completely service your knock sensors. When replacing your knock sensors you will have to remove your upper and lower manifold in order to change / service your knock sensors. The gaskets that are between the lower manifold and the cylinder heads must be replaced once the lower manifold has been removed. The OEM VQ35HR / VQ37VHR Plenum Gasket can be reused and can be purchased if needed.

Need to fix a P0325 or P0328 on your HR or VHR powered Nissan? The Z1 Knock sensor sub-harness is the most affordable and common solution for this repair.  

Installed below the intake manifold, the knock sensor sub-harness connects the engine harness to the knock sensor. Repeated heat cycles can cause wire insulation and connectors to become brittle, breaking down and resulting in poor or no connection to the knock sensor. Additionally, vehicles that are stored for extended periods of time may find the wiring is often damaged by small animals that live under the hood.

The Z1 Knock Sensor Sub Harness uses single-core shielded wire, featuring a stranded signal core with insulated and spiral wound grounded shield wire. This is the same material Z1 has been building our VQ35DE knock sensor sub harnesses with since 2011. Harnesses feature OEM connector bodies and terminals for the best quality available. You can trust a Z1 harness as they have been used in applications ranging from daily driver to complete competition engine builds for over a decade.

Includes:

• (1) - HR VHR Knock Sensor Harness
• (2) - OEM VQ35HR / VQ37VHR Knock Sensor
• (2) - OEM VQ Lower Intake Plenum to Cylinder Head Gasket

Commonly associated diagnostic codes:

• P0325 - Knock Sensor Circuit Malfunction - most commonly caused by either a low output voltage from the knock sensor or from a faulty and damaged sub-harness. Sometimes the sensors do fail but the most common issue is the sub-harness. Replacement OEM knock sensors can be found HERE.
• P0327 - Knock Sensor Circuit Low Input - Most commonly caused by a short in the harness between the sensor and the ECU. What's the most likely solution to this problem? Replace the sub-harness.
• P0328 - Knock Sensor Circuit High Input - Most commonly caused by a corroded or open circuit between the sensor and ECM.  Again the most common solution is a replacement sub-harness.  

Fits:

• 2007-2008 Nissan 350Z
• 2009-2020 Nissan 370Z
• 2007-2008 Infiniti G35 Sedan
• 2008-2013 Infiniti G37 Coupe
• 2009-2013 Infiniti G37 Sedan
• 2014-2015 Infiniti Q50 Sedan
• 2014-2015 Infiniti Q60 Coupe