Bosch 15148 Oxygen Sensor - Upstream

Bosch Oxygen Sensor for Upstream Control

The Bosch Engineered Oxygen Sensor 15148 is a specific-fit, narrow-band heated O2 sensor built for upstream air-fuel monitoring. It delivers precise feedback to the ECU so the engine can maintain stable combustion control and lower emissions across changing operating conditions.

Compatible With 2004-2008 Chevrolet Aveo, 2006-2008 Chevrolet Aveo5, 2006-2007 Pontiac Wave5, 2006-2008 Pontiac Wave, 2004-2005 Suzuki Verona, 2006-2008 Suzuki Forenza, and 2006-2008 Suzuki Swift+ in the upstream position.

Key Features

• Bosch Engineered Oxygen Sensor line with OE-focused design and calibration
• Part number 15148 for direct identification and ordering
• Narrow-band heated oxygen sensor for faster closed-loop operation
• Specific fit with threaded mounting and 18 mm thread diameter
• 4-wire layout with blade terminals and rectangular connector
• Wiring harness included for vehicle-specific installation
• Metal housing with high-temperature-resistant construction
• Upstream sensor placement for air-fuel ratio feedback

Product Details

Bosch developed its oxygen sensor technology from early OE designs and later planar narrowband sensor architecture to improve light-off speed, lambda accuracy, and closed-loop response. The Bosch 15148 uses a heated narrow-band sensing element and optimized heater control to provide consistent signal output under thermal cycling and vibration. For drivers and technicians servicing Chevrolet Aveo, Pontiac Wave, Suzuki Forenza, or Suzuki Swift+, this sensor supports accurate upstream mixture control and emissions system operation.

This part cross-references 96412900 and 96418965 for the same application.

Common Issues This Sensor Addresses

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings at the ECU
• Rough idle caused by delayed upstream sensor response
• Increased emissions from inaccurate mixture control
• Slow closed-loop transition after engine start

Installation Notes

Install in the upstream location specified for the vehicle application. Verify the 18 mm threaded bung, 22 mm hex size, connector shape, and 4-wire harness routing before installation. Use care when handling the sensing tip and route the harness away from exhaust heat and moving components. Confirm the connector and terminal style match the original sensor before final assembly.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience. The design uses ceramic sensing elements, controlled heater operation, and heat-resistant materials to maintain stable performance in demanding exhaust conditions.