Bosch 15804 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Ford Focus Vehicles

The Bosch Validated Oxygen Sensor 15804 is designed specifically for Ford Focus models, providing accurate air-fuel mixture readings to optimize engine performance and reduce emissions. This narrow-band heated oxygen sensor ensures precise monitoring for emission control systems.

• Specific fit for Ford Focus vehicles
• Heated narrow-band oxygen sensor type
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• 15.9-inch wiring harness length with 4-wire configuration
• Durable metal housing with steel finish
• Blade terminal type with rectangular male connector
• Overall length of 19.3 inches for proper installation
• Standard replacement grade for reliable performance
• Wiring harness included for direct fit

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering sensors that meet strict validation standards for fit, form, and function. This ensures that the oxygen sensor 15804 integrates seamlessly with the vehicle’s emission control system, maintaining compliance with factory specifications and emission regulations.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate oxygen level detection. The sensor includes a 4-wire configuration with blade terminals and a rectangular male connector, facilitating a secure electrical connection. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation using standard tools. The sensor’s metal housing and steel finish provide durability against harsh engine conditions. With an overall length of 19.3 inches and a wiring harness length of 15.9 inches, this sensor is engineered for precise fitment in Ford Focus models.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Ford Focus vehicles
• Helps resolve engine performance issues related to incorrect air-fuel mixture
• Reduces emissions by providing accurate feedback to the engine control unit
• Prevents check engine light triggers caused by sensor malfunctions
• Improves fuel efficiency by ensuring proper combustion monitoring

Installation Notes and Tips

When installing the Bosch oxygen sensor 15804, 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 and connector match the vehicle’s factory harness to ensure proper electrical connection. Thread the sensor carefully to avoid cross-threading and tighten to manufacturer torque specifications. No mounting bracket is included, so use the existing vehicle mounting points.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15804 is manufactured to meet OEM standards for quality and durability. It is a standard replacement grade sensor designed to maintain emission control system integrity. Bosch products typically come with a limited warranty covering defects in materials and workmanship; please refer to Bosch’s official warranty policy for specific terms.