Bosch 15098 Oxygen Sensor - Upstream

Bosch OE Oxygen Sensor for Volvo Upstream Use

Bosch Part Number 15098 is an Actual OE Oxygen Sensor built for precise air-fuel-ratio feedback to the ECU. It is a narrow-band heated sensor with a threaded, specific-fit design for upstream placement on select Volvo applications, including Volvo S90, Volvo V90, and Volvo 960.

For drivers searching for a Bosch 15098 oxygen sensor for 1995-1998 Volvo 960 upstream or a Bosch 15098 replacement for 1997-1998 Volvo S90 and V90 upstream, this sensor follows OE-style construction and signal behavior for stable closed-loop operation.

Key Features

• Actual OE Oxygen Sensor from Bosch
• Part Number: 15098
• Narrow-band heated oxygen sensor design
• Specific fit with threaded mounting
• 4-wire configuration with included wiring harness
• 22 mm hex size and 18 mm thread diameter
• Metal housing with steel finish for underbody service conditions
• Round connector with male connector gender and female terminal gender

Product Details

Bosch’s Actual OE Oxygen Sensor line draws on decades of original equipment development, including early thimble-style sensors and later planar narrowband designs. This Bosch 15098 sensor uses advanced ceramic elements and controlled heater operation to deliver accurate lambda feedback and quicker closed-loop response across changing exhaust temperatures. It is a direct-fit upstream sensor for Volvo S90, Volvo V90, and Volvo 960 applications listed below.

Fits 1997-1998 Volvo S90, upstream. Fits 1997-1998 Volvo V90, upstream. Fits 1995-1997 Volvo 960, upstream.

This part cross-references 9125581 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings at the ECU
• Slow closed-loop fuel control response
• Rough idle or drivability issues tied to sensor signal degradation
• Emissions test failures caused by a worn upstream O2 sensor

Installation Notes and Tips

Install this sensor in the upstream location only on the listed Volvo applications. Verify the 18 mm thread size, 22 mm hex, and 4-wire connector style before installation. Because oxygen sensors operate in high heat and vibration zones, inspect the harness routing and connector condition during replacement.

Quality Assurance

Bosch backs this oxygen sensor with OE development experience and materials selected for thermal and vibration resistance. The design reflects Bosch’s long history supplying oxygen sensors to vehicle manufacturers and the aftermarket.