Bosch 13309 Oxygen Sensor - Upstream

Bosch Actual OE Oxygen Sensor for Ferrari

Bosch Part Number 13309 is an Actual OE Oxygen Sensor built for specific Ferrari applications, including upstream locations on the F50, 456 GT, F355 Berlinetta, and F355 GTS. It uses a narrow-band heated design to deliver precise air-fuel-ratio feedback to the ECU for stable combustion control and emissions management.

Key Features

• Specific-fit Bosch oxygen sensor for confirmed Ferrari applications
• Narrow-band heated sensor design for faster closed-loop operation
• 4-wire configuration with square male connector and blade terminals
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Wiring harness included with 19.9 in harness length
• Metal housing and high-temperature-resistant construction for demanding exhaust conditions
• Bosch Part Number 13309 for OE-style replacement identification

Product Details

Bosch’s Actual OE Oxygen Sensor line draws on decades of original-equipment development, including narrow-band and planar sensor technology that improves light-off speed, lambda accuracy, and closed-loop response. This Bosch 13309 oxygen sensor is engineered for direct replacement in upstream exhaust positions on Ferrari F50, Ferrari 456 GT, Ferrari F355 Berlinetta, and Ferrari F355 GTS applications. It is a threaded, heated oxygen sensor with a square connector, male terminals, and a wiring harness included for a clean service replacement.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Unstable air-fuel ratio feedback to the ECU
• Delayed closed-loop fuel control after startup
• Exhaust emissions concerns caused by inaccurate sensor readings
• Rough combustion control from a worn upstream sensor

Installation Notes and Tips

Verify the upstream sensor location, connector shape, terminal count, and thread size before installation. This Bosch oxygen sensor uses an 18 mm thread diameter, 22 mm hex size, and a specific-fit harness layout, so matching the original connector and routing is important for proper installation on Ferrari F50, Ferrari 456 GT, and Ferrari F355 applications. Inspect the exhaust bung threads and wiring path before tightening the sensor into place.

Quality Assurance

Bosch supplies this Actual OE Oxygen Sensor using OE-proven engineering, ceramic sensing elements, optimized heater control, and materials selected for high heat and vibration exposure. The Bosch 13309 is built to deliver consistent sensor output across a wide range of operating conditions.