Bosch 13701 Oxygen Sensor - Downstream Left

Reliable Oxygen Sensor for Chevrolet and GMC Trucks

The Bosch Validated Oxygen Sensor 13701 is designed specifically for heavy-duty Chevrolet and GMC models, including the Silverado 2500 HD and Sierra 3500. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance.

• Specific fit for Chevrolet Avalanche 2500, GMC Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, Silverado 3500, Suburban 2500, and Yukon XL 2500
• Heated narrow-band oxygen sensor with threaded mounting
• 19.1-inch wiring harness length with trapezoid male connector
• Standard replacement grade with 4-wire blade terminals
• Durable metal housing with 22 mm hex size and 18 mm thread diameter

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering precise emissions control components that meet OEM specifications. This line includes sensors that are tested and validated for specific vehicle applications, ensuring compatibility and reliable performance. The 13701 oxygen sensor is part of this line, providing a direct fit and standard replacement quality for select Chevrolet and GMC heavy-duty trucks.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which helps maintain accurate air-fuel mixture readings under various operating conditions. The sensor includes a 19.1-inch wiring harness with a trapezoid-shaped male connector and four blade terminals, facilitating straightforward installation. Its metal housing and threaded mounting type (18 mm thread diameter) provide durability and secure attachment. The overall length of the sensor is 22.8 inches, with a sealing surface to connector length of 21.7 inches, making it suitable for the specified heavy-duty truck models.

Common Applications and Issues Addressed

• Restores proper oxygen sensing for Chevrolet Silverado 2500 HD and GMC Sierra 3500 emissions systems
• Resolves engine performance issues related to faulty oxygen sensors
• Helps correct rough idling and poor fuel economy in Silverado 3500 and Yukon XL 2500
• Supports emission control compliance for Avalanche 2500 and Suburban 2500
• Eliminates check engine light triggers caused by sensor failure

Installation Notes and Tips

Installation requires removing the old oxygen sensor and threading the Bosch 13701 sensor into place using a 22 mm wrench. Ensure the wiring harness is properly connected to the trapezoid male connector with four terminals. No mounting bracket is included, so use the existing mounting point. The heated sensor design allows for quicker warm-up and accurate readings shortly after engine start.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The 13701 sensor is a standard replacement part designed for durability and reliable operation in heavy-duty Chevrolet and GMC trucks. Warranty details should be confirmed with the original purchase source, as Bosch typically offers limited warranties on their emission control components.