Denso 234-4730 Oxygen Sensor - Upstream Front or Upstream Rear

Denso OE Style Oxygen Sensor for Acura NSX

Denso 234-4730 is an OE Style heated oxygen sensor built for precise replacement and consistent signal performance. It is engineered for 2000-2005 Acura NSX applications, including upstream front and upstream rear positions, with a specific-fit design for straightforward matching to the original sensor layout.

The Denso OE Style line focuses on exact replacement fitment and OE-level construction. This sensor uses a threaded mounting design, a male connector, four wires, and a 34.65-inch wiring harness length to match the factory configuration on the Acura NSX.

Key Features

• OE Style replacement for 2000-2005 Acura NSX oxygen sensor applications
• Heated sensor design for faster operating readiness
• Specific fit for direct replacement on the original mounting location
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 thread diameter
• 34.65-inch wiring harness length for factory-style routing
• Denso part number 234-4730 for accurate ordering and lookup

Product Details

Denso 234-4730 is designed for Acura NSX owners who need a direct-fit oxygen sensor for upstream front or upstream rear placement. As part of Denso’s OE Style product line, it is built and tested to OE standards and uses precision construction to support first-time fitment. The sensor also incorporates Denso’s aluminum oxide trap layer, which helps protect the ceramic element from silicone and lead contamination for more stable engine operation and longer service life. This part cross-references Bosch 15478 and NTK 24679 for the same application.

Common Issues This Sensor May Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings on the Acura NSX
• Reduced fuel economy caused by a failing upstream sensor
• Slow sensor response or unstable exhaust feedback
• Emissions test failure tied to oxygen sensor faults

Installation Notes and Tips

Verify the sensor position before installation: this part is listed for upstream front and upstream rear locations on 2000-2005 Acura NSX models. Confirm connector style, wire count, and thread size against the original sensor before removal. Because this is a threaded, specific-fit oxygen sensor, proper routing of the harness and secure connector engagement are important for reliable operation.

Quality Assurance

Denso manufactures and tests this oxygen sensor to strict OE standards for accurate replacement fitment and dependable performance. The OE Style design is intended to match factory specifications on the Acura NSX, and the protective trap layer is part of Denso’s approach to improving durability in demanding exhaust environments.