Bosch 13077 Oxygen Sensor - Upstream

Bosch Actual OE Oxygen Sensor 13077

Bosch 13077 is a narrow-band heated oxygen sensor built for precise air-fuel ratio feedback to the ECU. It supports stable combustion control and emissions management for upstream applications on select Chevrolet, GMC, Buick, Oldsmobile, and Pontiac vehicles.

Key Features

• Actual OE Oxygen Sensor from Bosch Actual OE Oxygen Sensor line
• Narrow-band heated O2 sensor with 3-wire lead and female connector
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Specific-fit design for direct replacement on listed applications
• Advanced ceramic sensing element and heater control for consistent signal response
• Wiring harness included; harness length measures 10.1 in

Product Details

Bosch 13077 uses Bosch’s OE development experience to deliver a switching-type oxygen sensor that reports exhaust oxygen content to the engine control unit. The narrow-band design is suited to upstream fuel control on vehicles such as the Chevrolet Corvette, Chevrolet S10, and GMC Sonoma, where accurate closed-loop operation is important for drivability and emissions performance. This part number, 13077, is engineered as a standard replacement with a metal housing, oblong female connector, and threaded installation.

This part cross-references GM OE numbers 19178959 and 25176708 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle or unstable air-fuel mixture control
• Increased exhaust emissions from inaccurate upstream feedback
• Delayed closed-loop operation after startup
• Poor fuel control caused by a slow or aging sensor

Installation Notes

Verify the connector shape, wire count, and upstream location before installation. Bosch 13077 is a specific-fit, threaded sensor with a 18 mm thread size, so confirm exhaust bung compatibility and route the harness away from heat and vibration. Use the listed vehicle fitment for direct application matching on 1990-1995 Chevrolet Corvette, 1992-1995 Chevrolet S10, and 1992-1994 GMC Sonoma upstream positions.

Quality Assurance

Bosch has more than five decades of OE oxygen sensor development behind this design. The sensor uses high-temperature-resistant materials and heater control strategies intended to maintain consistent operation under thermal and vibration load, reflecting Bosch’s OE-focused engineering approach.