HomeEmission Control > SensorsDenso 234-9065 Air / Fuel Ratio Sensor - Upstream
Part #: 234-9065

Denso 234-9065 Air / Fuel Ratio Sensor - Upstream

OE Style, Upstream
⚙️ 6 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦OE Style, Upstream
🚗Fitment: Honda and Acura, S2000 and RSX
🔄Easy Returns — Return within 60 days for a full refund
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Overview of the Denso OE Style Air/Fuel Ratio Sensor

The Denso OE Style Air/Fuel Ratio Sensor 234-9065 is designed specifically for Acura RSX and Honda S2000 models. This heated sensor ensures accurate air and fuel mixture readings to maintain optimal engine performance and emissions control.

  • Heated sensor type for faster response times
  • Specific fit for Acura RSX and Honda S2000
  • 20.39-inch wiring harness length for precise installation
  • Four-wire configuration with male connector
  • Thread diameter of 0.711 inches for secure mounting
  • Regular grade type for reliable operation

Details on the OE Style Product Line

The Denso OE Style line focuses on delivering parts that meet original equipment specifications. The 234-9065 air/fuel ratio sensor is engineered to match the exact fit and function required by Acura and Honda vehicles, ensuring compatibility and consistent performance without modification.

Technical Description and Features

This air/fuel ratio sensor features a heated element that allows it to reach operating temperature quickly, improving sensor response and engine efficiency. The 20.39-inch wiring harness length provides adequate reach for factory-style installation, while the four-wire design supports accurate signal transmission. The male connector and 0.711-inch thread diameter ensure a secure and proper fit in the exhaust system. Designed as a specific fit part, it is tailored for Acura RSX and Honda S2000 models, maintaining OEM standards for emissions control.

Common Applications and Problem Resolution

  • Helps correct inaccurate air/fuel mixture readings
  • Resolves engine performance issues related to faulty sensors
  • Reduces emissions by providing precise sensor data
  • Prevents check engine light triggers related to sensor faults
  • Supports smooth engine idling and acceleration

Installation Notes and Tips

When installing the Denso 234-9065 sensor, ensure the wiring harness is routed away from excessive heat sources and moving parts. Use appropriate tools to avoid damaging the 0.711-inch threaded fitting. Verify connector engagement to prevent signal interruptions. This sensor is designed for direct replacement on Acura RSX and Honda S2000 models, requiring no additional modifications.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet strict quality standards consistent with original equipment. This part undergoes rigorous testing to ensure durability and reliable performance. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship to support long-term use.

BrandDenso
Part Number234-9065
PositionOE Style, Upstream
Connector GenderMale
Grade TypeRegular
Sensor TypeHeated
Thread Diameter0.711
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length20.39

This part fits 6 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
2009HondaS2000UpstreamOE Style
2008HondaS2000UpstreamOE Style
2007HondaS2000UpstreamOE Style
2006AcuraRSXAutomaticUpstreamOE Style
2006HondaS2000UpstreamOE Style
2005AcuraRSXAutomaticUpstreamOE Style

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

213-3904

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.