Goss Pre-Catalytic Converter Oxygen Sensor OX843 - Nissan 350Z HR
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OX843 · Goss Pre-Cat Oxygen Sensor · 4 Wire · Pair 350Z HR · VQ35HR · From February 2007
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Goss Pre-Catalytic Converter Oxygen Sensor OX843 Nissan 350Z HR
OX843 · Pre-Cat · Upstream · 4 Wire · Nissan 350Z Z33 HR · VQ35HR · From February 2007 · Sold as 2
The Goss OX843 is the pre-catalytic converter (upstream) oxygen sensor for the Nissan 350Z HR equipped with the VQ35HR 3.5L V6 engine, built from February 2007. Sold as a set of 2 covering both the left and right bank sensor positions. It is a direct OEM-fit replacement supplied with a factory-matched connector for plug and play installation. Goss has been an Australian automotive parts brand for over 80 years, sourcing to OEM specification for the Australian and New Zealand market.
The VQ35HR uses two pre-cat oxygen sensors, one per bank, mounted in the exhaust stream before each catalytic converter. These are the primary fuel control sensors, sending closed-loop feedback to the ECU to maintain the correct air to fuel ratio. A faulty pre-cat sensor directly affects fuel economy, throttle response, and emissions output and is one of the most common causes of check engine lights on the 350Z HR platform.
Common symptoms of a faulty pre-cat oxygen sensor:
• Check engine light with upstream O2 fault codes (P0130, P0131, P0132, P0133, P0134, P0150 or similar)
• Increased fuel consumption
• Rough idle or hesitation under acceleration
• Reduced engine performance
• Failed emissions test
Product specifications
| Specification | Detail |
|---|---|
| Part number | OX843 |
| Brand | Goss |
| Type | Oxygen sensor (lambda sensor) |
| Position | Pre-catalytic converter (upstream) · Both banks |
| Number of wires | 4 |
| Application | From February 2007 build date |
| Connector | Direct-fit factory-matched |
| Sold as | 2 sensors per pack (LH and RH bank) |
Why Goss
- Goss has been an Australian automotive parts brand for over 80 years, sourcing and manufacturing to OEM specification for the Australian and New Zealand market
- OEM-specification direct fit replacement engineered to match the original sensor in fit, connector type, wire count, and output characteristics for the VQ35HR
- Factory-matched connector for plug and play installation with no wiring modification or adaptor required
- Stocked through major Australian retailers including Repco and Supercheap Auto, making Goss a well-established replacement part for the Nissan platform
- Sold as a set of 2 covering both the left and right bank pre-cat positions on the VQ35HR in a single purchase
Installation
Difficulty
Intermediate
Position
Pre-cat · Both banks
Tools required
O2 sensor socket
Wiring required
None
Fitment
Nissan 350Z Z33 HR · February 2007 to 2009 (VQ35HR · 3.5L V6) · Pre-cat upstream · Both banks · 2 sensors included
Suits the 350Z HR (VQ35HR) from February 2007 only. Does not fit the 350Z DE (VQ35DE) or 370Z (VQ37VHR). Confirm your engine code and build date from your compliance plate before ordering.
One pack of 2 covers both pre-cat sensor positions on the VQ35HR. Always scan for fault codes before replacing oxygen sensors to confirm the sensor is the source of the fault rather than a wiring or ECU issue.
