Bosch 13721 Oxygen Sensor - Upstream

Overview of Bosch Actual OE Oxygen Sensor 13721

The Bosch Actual OE Oxygen Sensor 13721 is designed specifically for Porsche 911 models, ensuring precise emission control and optimal engine performance. This narrow-band heated oxygen sensor features a threaded mounting type and a durable metal housing for reliable operation.

• Specific fit for Porsche 911
• Heated narrow-band oxygen sensor
• Threaded mounting with 18 mm thread diameter
• 4-wire configuration with blade terminals
• Includes wiring harness with 30.6-inch length
• Oblong male connector with 4 terminals
• Steel finish with 22 mm hex size for installation
• Overall length of 34.3 inches for proper fitment

Detailed Product Description

The Bosch Actual OE Oxygen Sensor 13721 is engineered as a standard replacement part for Porsche 911 vehicles, providing accurate air-fuel mixture readings to the engine control unit. This sensor is a narrow-band type with heating elements to ensure quick response times and consistent performance under various operating conditions. The sensor’s metal housing and threaded mounting design allow for secure installation and durability. Featuring a 4-wire setup with blade terminals and an oblong male connector, it includes a wiring harness measuring 30.6 inches to facilitate proper connection and fitment. The 22 mm hex size simplifies removal and installation using standard tools.

About the Bosch Actual OE Oxygen Sensor Product Line

The Actual OE Oxygen Sensor line by Bosch focuses on delivering direct-fit replacement sensors that meet original equipment specifications. This product line emphasizes compatibility and reliability, ensuring that each sensor integrates seamlessly with the vehicle’s emission control system. The 13721 sensor exemplifies this approach by providing a precise fit and function for Porsche 911 models, maintaining emission standards and engine efficiency.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper fuel mixture control
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce emissions and pass vehicle inspections
• Eliminates rough idling and poor fuel economy caused by sensor failure
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use a 22 mm oxygen sensor socket for proper installation and removal
• Verify the wiring harness length and connector type match the vehicle’s factory setup
• Do not overtighten the sensor; follow manufacturer torque specifications
• Check for any exhaust leaks around the mounting area after installation

Quality Assurance and Warranty

Bosch manufactures the Actual OE Oxygen Sensor 13721 to meet strict quality standards, ensuring reliable performance and durability. This sensor is designed as a direct replacement part, meeting or exceeding OEM specifications for fit and function. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship to support long-term use in Porsche 911 vehicles.