Bosch 13030 Oxygen Sensor - Upstream

Bosch Oxygen Sensor for Upstream Applications

Bosch Engineered Oxygen Sensor 13030 is a specific-fit, narrow-band heated O2 sensor built for upstream emission control applications. It delivers air-fuel-ratio feedback to the ECU for stable combustion control and lower emissions in the vehicles listed below.

Compatible With 1992-1995 Honda Passport, 1992-1995 Isuzu Rodeo, 1992-1995 Isuzu Trooper, 1992-1993 Geo Storm, 1992 Isuzu Impulse, and 1992 Isuzu Stylus in the upstream position. Bosch 13030 is a direct replacement choice for drivers servicing a Bosch Engineered Oxygen Sensor application on these platforms.

Key Features

• Specific-fit oxygen sensor for listed upstream applications
• Narrow-band heated design for closed-loop fuel control
• 4-wire configuration with included wiring harness
• Threaded mounting with 18 mm thread size and 22 mm hex
• Square connector with male terminals and blade-style terminals
• Standard replacement grade for emission system service
• Metal housing and high-temperature-resistant construction

How Bosch Engineered Oxygen Sensors Work

Bosch developed this oxygen sensor line from decades of OE sensor engineering, including early thimble-style designs and later planar narrowband technology. The result is a sensor that responds quickly to exhaust changes, supports accurate lambda feedback, and helps the ECU maintain the correct air-fuel mixture during warm-up and normal driving. Bosch 13030 is built for upstream use where the sensor plays a direct role in fuel trim control.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Sensor Can Help Address

• Check engine light related to oxygen sensor performance
• Rough idle caused by inaccurate air-fuel feedback
• Increased emissions from delayed or unstable sensor response
• Poor fuel control during closed-loop operation
• Driveability issues tied to a worn upstream O2 sensor

Installation Notes and Tips

Install Bosch 13030 in the upstream location specified for the vehicle. Verify the 4-wire connector, square plug shape, 18 mm thread size, and 22 mm hex before installation. Because oxygen sensors operate in high heat and vibration, inspect the harness routing and connector condition during service to avoid repeat faults.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development and supplies it as an OE-proven aftermarket replacement. The Bosch Engineered Oxygen Sensor line is built to deliver consistent performance under demanding thermal and vibration conditions.