Bosch 13524 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Audi A4 and A4 Quattro

The Bosch Actual OE Oxygen Sensor 13524 is designed specifically for Audi A4 and A4 Quattro models, ensuring precise emission control and optimal engine performance. This narrow-band heated oxygen sensor provides accurate air-fuel mixture readings to help maintain efficient combustion and reduce harmful emissions.

• Specific fit for Audi A4 and A4 Quattro vehicles
• Heated narrow-band oxygen sensor for fast response
• Threaded mounting type with 18 mm thread diameter
• 15.2-inch wiring harness length with 3 wires and 4 blade terminals
• Durable metal housing with steel finish and 22 mm hex size
• Includes wiring harness with oblong male connector
• Standard replacement grade for reliable performance

About the Bosch Actual OE Oxygen Sensor Line

The Bosch Actual OE Oxygen Sensor product line focuses on delivering direct-fit replacement sensors that meet original equipment specifications. This ensures compatibility and performance consistency for vehicles like the Audi A4 and A4 Quattro. The 13524 part number sensor is engineered to provide accurate emissions data and maintain engine efficiency, supporting compliance with emission standards.

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 ratio monitoring. The sensor’s metal housing and steel finish provide durability under high-temperature conditions. With a threaded mounting type and an 18 mm thread diameter, installation is straightforward and secure. The wiring harness measures 15.2 inches in length and includes a 4-terminal blade connector with an oblong shape, designed specifically for the Audi A4 and A4 Quattro models. The sensor’s overall length is 18.9 inches, with a sealing surface to connector length of 17.7 inches, ensuring proper fitment and connection.

Common Issues Addressed by This Oxygen Sensor

• Engine performance problems due to inaccurate air-fuel mixture readings
• Increased emissions and failed emissions tests
• Check engine light triggered by faulty oxygen sensor signals
• Poor fuel economy caused by inefficient combustion
• Rough idling or hesitation during acceleration

Installation Notes and Tips

• Ensure the vehicle is compatible: Audi A4 or A4 Quattro models
• Use a 22 mm wrench for sensor removal and installation
• Handle the sensor carefully to avoid damaging the wiring harness
• Verify the connector is securely attached to prevent signal loss
• Do not reuse old mounting hardware; replace if necessary for proper sealing

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, providing reliable performance and durability. This part is a standard replacement grade sensor designed to match original equipment specifications. While specific warranty details are not provided here, Bosch typically offers coverage against manufacturing defects. Always consult product documentation or the vehicle manufacturer for warranty information.