Bosch 15019 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Saab and Subaru Vehicles

The Bosch Validated Oxygen Sensor 15019 is designed specifically for select Saab and Subaru models, including the 9-2X, Forester, and Impreza. This heated wide-band oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions control.

• Heated oxygen sensor for faster warm-up and accurate readings
• Specific fit for Saab 9-2X and Subaru Forester, Impreza models
• Wide-band sensor type with 4-pin female connector and square shape
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes 28.5-inch wiring harness with 4 wires and female terminals
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade for reliable emission control

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. The 15019 sensor is engineered to provide precise oxygen level measurements, helping maintain proper engine combustion and reduce harmful emissions. This line is tailored to specific vehicle applications, ensuring compatibility and performance consistency.

Detailed Product Description

This Bosch oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving sensor response time and engine efficiency. The wide-band sensor type provides a broad measurement range for accurate air-fuel ratio monitoring. With a 4-wire configuration and a 28.5-inch wiring harness, it offers straightforward installation and reliable electrical connections. The sensor’s metal housing and steel finish provide durability against harsh engine conditions. Its threaded mounting with an 18 mm diameter and 22 mm hex size ensures secure attachment in the exhaust system.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio readings for improved fuel economy
• Helps reduce engine misfires and rough idling
• Supports emission system compliance by maintaining accurate oxygen sensing
• Prevents check engine light triggers related to oxygen sensor faults
• Improves overall engine performance and reduces exhaust emissions

Installation Notes and Tips

Ensure the vehicle is cool before removing the old oxygen sensor to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match the vehicle’s factory specifications. Avoid damaging the sensor’s wiring during installation. Thread the sensor carefully to prevent cross-threading and tighten to manufacturer torque specifications.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15019 is manufactured to meet OEM standards for quality and durability. Bosch provides a standard replacement grade sensor designed for reliable long-term operation. While specific warranty details may vary, Bosch products typically include a limited warranty against defects in materials and workmanship.