Bosch 15176 Oxygen Sensor - Upstream

Bosch Wideband O2 Sensor for Volvo Upstream Applications

Bosch 15176 is an Actual OE Oxygen Sensor built for precise air-fuel ratio monitoring in upstream wideband applications. It delivers continuous measurement across the full lambda range, helping the engine control unit manage mixture control with the detail modern Volvo engine management systems require.

Fits 2006 Volvo C70, upstream. Fits 2004-2006 Volvo S40, upstream. Fits 2005-2006 Volvo V50, upstream. This Bosch oxygen sensor is a direct-fit, specific application replacement for vehicles listed in the fitment data.

Key Features

• Wideband A/F oxygen sensor for high-precision air-fuel ratio feedback
• Heated design for faster sensor operation and stable readings
• Specific-fit replacement with 5-wire harness and 6 terminals
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Rectangle connector, male connector gender, and included wiring harness
• Robust metal housing and ceramic sensor construction for thermal durability
• Part number 15176 for streamlined lookup and ordering

Product Details

Bosch’s Actual OE Oxygen Sensor line reflects decades of OE development and wideband sensor engineering. Bosch pioneered the planar pump-cell wideband design used in modern engine management, and this sensor follows that OE-style architecture to provide detailed feedback under changing load and temperature conditions. For Volvo C70, S40, and V50 upstream service, Bosch 15176 supports accurate mixture control where the engine relies on fast, stable oxygen sensing.

This part cross-references Monroe Shocks & Struts (e.g., 30651724) for the same application.

Common Issues This Sensor Can Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn wideband sensor
• Rough idle or hesitation caused by inaccurate exhaust feedback
• Reduced fuel economy from poor mixture control
• Emissions test failure tied to sensor response or signal degradation

Installation Notes and Tips

Install Bosch 15176 in the upstream location specified for the listed Volvo applications. Confirm the 18 mm thread size, 22 mm hex, rectangle connector, and 5-wire harness layout before installation. Because this is a wideband sensor, proper connector matching and secure routing of the included harness are important for reliable operation.

Quality Assurance

Bosch supplies OE-proven oxygen sensor technology to the aftermarket, with wideband designs developed for accurate measurement, fast light-off, and dependable performance through repeated thermal cycling. Part number 15176 is built to the same standard expected from Bosch Actual OE sensor applications.