Denso 234-4364 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor for Honda S2000

Denso 234-4364 is a specific-fit heated oxygen sensor built for direct replacement on the 2004-2005 Honda S2000 downstream position. It is engineered to match OE-style fitment and electrical requirements for accurate exhaust feedback and dependable drivability.

The Denso OE Style line focuses on exact replacement fit and consistent sensor performance. This Denso 234-4364 oxygen sensor uses a threaded mounting design, a female connector, 4 wires, and a 25.59-inch wiring harness length for a factory-style installation on the Honda S2000.

Key Features

• Specific-fit heated oxygen sensor for the downstream location
• OE Style replacement for 2004-2005 Honda S2000
• Threaded mounting type with 0.708-inch thread diameter
• Female connector with 4-wire configuration
• 25.59-inch wiring harness length for proper routing
• Built to OE standards for exact replacement fit
• Aluminum oxide trap layer helps protect the sensing element from silicone and lead contamination

Product Details

Designed for the 2004-2005 Honda S2000, this downstream oxygen sensor helps maintain proper exhaust monitoring and supports accurate air-fuel control feedback. Denso manufactures and tests this OE Style sensor to strict original-equipment standards, with attention to first-time fit and stable performance. The part number 234-4364 is also referenced by ACDelco 213-1403 and Bosch 15086 for the same application.

For buyers searching for a 2004 Honda S2000 downstream oxygen sensor or a 2005 Honda S2000 OE replacement O2 sensor, Denso 234-4364 provides a direct-fit solution with the correct connector style and harness length. It is a practical choice when replacing a worn sensor that can affect emissions monitoring and engine operation.

Common Issues This Part May Address

• Check engine light related to downstream oxygen sensor faults
• Slow or inaccurate exhaust oxygen readings
• Reduced fuel economy caused by aging sensor response
• Emissions test failures tied to sensor performance
• Rough or inconsistent engine operation from faulty feedback signals

Installation Notes and Tips

Fits 2004-2005 Honda S2000, downstream. Confirm the connector style, threaded mounting point, and harness routing before installation. Because this is a specific-fit sensor, match the original location and wiring layout to avoid fitment issues. Use proper oxygen sensor service tools and follow the vehicle service procedure for removal and installation.

Quality Assurance

Denso builds this OE Style oxygen sensor to original-equipment standards and tests it for replacement accuracy and performance consistency. The sensor includes an aluminum oxide trap layer intended to help protect the ceramic element from contamination, supporting long-term reliability in normal exhaust service.