Bosch 13041 Oxygen Sensor - Downstream

Bosch 13041 Oxygen Sensor for Downstream Emissions Control

Bosch 13041 is a specific-fit, narrow-band heated oxygen sensor built for downstream exhaust monitoring. It delivers air-fuel-ratio feedback to the ECU for stable closed-loop control, accurate lambda measurement, and lower emissions across changing operating conditions.

Compatible With 1995-2001 Suzuki Swift, 1996-1997 Geo Metro, 1996-2000 Pontiac Firefly, 1998-2001 Chevrolet Metro, 1999-2001 Chevrolet Tracker, 1999-2000 Suzuki Grand Vitara, and 1999-2000 Suzuki Vitara applications that use a downstream sensor location. Bosch Engineered Oxygen Sensor coverage is backed by decades of OE development, and Bosch 13041 follows that same OE-focused approach for replacement service.

• Specific-fit oxygen sensor for downstream exhaust placement
• Narrow-band heated sensor design for faster closed-loop operation
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• 4-wire configuration with square male connector and blade terminals
• Wiring harness included for direct replacement service
• Metal housing and high-temperature materials for exhaust-side durability
• Standard replacement grade for emission control maintenance

How Bosch Engineered Oxygen Sensor Design Helps

Bosch developed its oxygen sensor technology from early thimble-style designs to later planar narrowband sensors that improve light-off speed, lambda accuracy, and response in closed-loop operation. This Bosch Engineered Oxygen Sensor line uses ceramic sensing elements and controlled heater operation to maintain consistent signal quality under heat and vibration. For Chevrolet Metro, Suzuki Swift, and Tracker downstream service, Bosch 13041 supports the ECU with the signal it needs to manage combustion and emissions control.

Common Issues This Sensor Can Address

• Check engine light related to downstream oxygen sensor performance
• Slow or unstable oxygen sensor signal during closed-loop operation
• Emissions test failure tied to exhaust monitoring faults
• Rough fuel control caused by inaccurate air-fuel-ratio feedback
• Sensor degradation from heat, vibration, or exhaust contamination

Installation Notes and Tips

Verify the downstream location before installation and confirm the connector shape, terminal count, and thread size match the original sensor. The threaded 18 mm design installs into the exhaust stream, so use proper removal tools and follow service procedures for the vehicle’s exhaust system. On 1999-2001 Chevrolet Tracker and 1999-2000 Suzuki Vitara applications, confirm California-emissions notes and downstream placement before ordering Bosch 13041.

Quality Assurance

Bosch has more than five decades of OE oxygen sensor development and supplies aftermarket sensors built to OE-proven standards. This part cross-references 1821350G11 and 91177410 for the same application.