Bosch 13949 Oxygen Sensor - Upstream

Overview of Bosch Actual OE Oxygen Sensor 13949

The Bosch Actual OE Oxygen Sensor 13949 is designed specifically for BMW M3 and Z3 models, ensuring precise emission control and optimal engine performance. This narrow-band heated oxygen sensor features a threaded mounting type and a 29.4-inch wiring harness for straightforward installation.

• Compatible with BMW M3 and Z3 models
• Part number 13949 for exact fitment
• Narrow-band heated oxygen sensor type
• Threaded mounting with 18 mm thread diameter
• 29.4-inch wiring harness included with 4-pin female connector
• Steel housing with 22 mm hex size for installation
• Standard replacement grade for reliable performance

Detailed Product Description

The Bosch Actual OE Oxygen Sensor 13949 is engineered to meet OEM specifications for BMW vehicles, particularly the M3 and Z3 models. This sensor uses a narrow-band heated design to provide accurate air-fuel mixture readings, which are critical for emission control systems. The sensor features a 4-wire configuration with a female 4-pin round connector, ensuring compatibility with the vehicle’s wiring harness. Its steel housing and metal construction provide durability and resistance to harsh engine conditions. The threaded mounting type with an 18 mm thread diameter and 22 mm hex size allows for secure and precise installation. The overall length of 33.1 inches and wiring harness length of 29.4 inches provide sufficient reach for proper placement within the exhaust system.

About the Bosch Actual OE Oxygen Sensor Product Line

The Actual OE Oxygen Sensor line by Bosch is designed to offer direct replacement parts that match original equipment specifications. This product line focuses on delivering sensors that maintain factory performance and reliability, making it suitable for professional repairs and maintenance. The 13949 sensor exemplifies this approach by providing a standard replacement grade sensor with exact fitment for BMW M3 and Z3 models.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper engine management
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by ensuring correct air-fuel mixture readings
• Reduces harmful emissions by maintaining proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

• Ensure vehicle compatibility with BMW M3 and Z3 models before installation
• Use a 22 mm oxygen sensor socket for removal and installation
• Do not overtighten; torque to manufacturer specifications to avoid damage
• Inspect wiring harness and connector for damage before connecting
• Replace sensor when engine is cool to prevent burns and sensor damage

Quality Assurance and Warranty

Bosch oxygen sensors, including the Actual OE Oxygen Sensor 13949, are manufactured to meet strict quality standards for durability and performance. This sensor is a standard replacement grade part designed to provide reliable operation consistent with original equipment. Warranty coverage details should be confirmed with the point of purchase or Bosch directly.