Bosch 13946 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Land Rover Discovery and Range Rover

The Bosch Validated Oxygen Sensor 13946 is designed specifically for Land Rover Discovery and Range Rover models. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance by precisely monitoring exhaust gases.

• Specific fit for Land Rover Discovery and Range Rover vehicles
• Heated narrow-band oxygen sensor for faster response times
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• 18.6-inch wiring harness length with 3-wire blade terminals and round male connector
• Durable metal housing finished in steel for long-lasting performance
• Standard replacement grade with included wiring harness

About the Bosch Validated Oxygen Sensor Product Line

The Bosch Validated Oxygen Sensor line is engineered to meet strict OEM specifications, providing reliable emission control components for specific vehicle applications. This product line focuses on delivering precise sensor readings and compatibility, ensuring that the oxygen sensor integrates seamlessly with the vehicle’s engine management system. The 13946 sensor is part of this line, offering a direct fit and standard replacement quality for Land Rover models.

Detailed Product Description

This Bosch oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate air-fuel mixture readings. The sensor includes a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for easy installation. The wiring harness measures 18.6 inches in length and includes three blade terminals with a round male connector, ensuring a secure and reliable electrical connection. Constructed with a metal housing finished in steel, this sensor is built to withstand harsh engine environments. The overall length from sealing surface to connector end is 20.5 inches, providing ample reach for proper installation in Land Rover Discovery and Range Rover exhaust systems.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by maintaining proper air-fuel ratio
• Eliminates rough idling or engine hesitation caused by faulty sensors
• Prevents failed emissions tests due to sensor malfunction

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 13946, ensure the engine is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness length and connector type match the vehicle’s factory specifications. Thread the sensor carefully to avoid cross-threading and torque to manufacturer specifications. No mounting bracket is included, so use the existing mounting point on the vehicle. Confirm the male blade terminals and round connector align properly with the vehicle harness for a secure fit.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet OEM standards for durability and performance. The 13946 sensor undergoes rigorous testing to ensure reliable operation in Land Rover Discovery and Range Rover models. This part is a standard replacement grade component backed by Bosch’s quality assurance processes. Warranty coverage details should be confirmed with the original parts provider or Bosch directly.