Denso 234-4698 Oxygen Sensor - Downstream or Upstream

Denso OE Style Oxygen Sensor 234-4698

Denso 234-4698 is an OE Style heated oxygen sensor built for specific-fit replacement on select Volvo applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on the listed upstream and downstream positions.

Key Features

• Heated oxygen sensor for faster operating readiness
• Specific fit design for direct replacement on listed Volvo models
• 4-wire configuration with male connector
• Threaded mounting with 0.708 in. thread diameter
• 35.04 in. wiring harness length
• OE Style construction for factory-style fit and function

OE Style Construction

Denso’s OE Style line focuses on exact replacement fitment and consistent sensor performance. The sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life and reliable exhaust monitoring. For Volvo C70, S70, V70, and 850 applications, this part number 234-4698 provides a direct replacement path that matches the original-style configuration.

This part cross-references Bosch (e.g., 15063, 15097) for the same application.

Vehicle Fitment

• Fits 1998 Volvo C70, Upstream
• Fits 1998 Volvo C70, Downstream
• Fits 1998 Volvo S70, Upstream
• Fits 1998 Volvo S70, Downstream
• Fits 1998 Volvo V70, Upstream
• Fits 1998 Volvo V70, Downstream
• Fits 1994-1997 Volvo 850, Upstream
• Fits 1995 Volvo 850, Upstream, Air Pump; OE Style

What This Sensor Helps Address

• Check engine light concerns related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the engine control system
• Reduced fuel economy caused by a worn or slow-responding sensor
• Rough idle or drivability issues tied to exhaust feedback errors
• Failed emissions testing caused by sensor degradation

Installation Notes

Confirm the connector style, wire count, thread diameter, and sensor position before installation. This is a specific-fit sensor for the listed Volvo upstream and downstream locations, so matching the exact application is important for proper operation. Use the vehicle’s original routing and mounting points to avoid harness strain and exhaust contact.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement quality. The OE Style design supports factory-like fitment and dependable performance on the specified Volvo applications.