Bosch 13301 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Bosch OE Oxygen Sensor for Precise Fuel Control

Bosch 13301 is an Actual OE Oxygen Sensor built as a narrow-band heated replacement for vehicles that rely on accurate air-fuel feedback to the ECU. It uses a threaded, specific-fit design with a 4-wire harness and 18 mm thread size for direct replacement in confirmed applications.

Compatible With Ferrari 348 Spider, Ferrari 348 GTB, Ferrari 348 GTS, Ferrari 512 TR, Ferrari Mondial t, and Volvo 850 upstream applications, Bosch 13301 supports stable closed-loop operation across changing engine loads and temperatures. This Bosch Actual OE Oxygen Sensor line reflects Bosch’s long history in OE oxygen sensing, including faster sensor response, improved lambda accuracy, and durable ceramic construction for demanding exhaust conditions.

Key Features

• Actual OE Oxygen Sensor from Bosch
• Part number 13301 for direct reference and ordering
• Narrow-band heated sensor for faster warm-up and closed-loop operation
• Specific-fit design with threaded mounting
• 4-wire harness included with rectangle/rectangle connector shape
• Blade pin terminals, 4 terminal count, male/female connector gender
• 18 mm thread diameter and 22 mm hex size
• Steel finish with metal housing for exhaust-area durability

Detailed Description

Bosch 13301 is a standard replacement oxygen sensor engineered for upstream exhaust locations where the ECU depends on accurate switching-type signal input. The sensor measures air-fuel ratio and helps the engine management system maintain stable combustion control while reducing emissions. Its heated narrow-band design helps the sensor reach operating temperature quickly, which supports faster feedback during cold starts and normal driving.

This Bosch Actual OE Oxygen Sensor line is based on Bosch OE development that began with early thimble-style sensors and later advanced to planar narrowband designs. The result is a replacement sensor built for consistent signal quality, improved response, and reliable operation under heat and vibration. This part cross-references 60808350 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rich or lean fuel trim conditions caused by inaccurate exhaust feedback
• Slow closed-loop transition after startup
• Rough idle or unstable combustion control tied to sensor aging
• Higher emissions from degraded upstream O2 sensor response

Installation Notes and Tips

Install Bosch 13301 in the confirmed upstream position for the listed Ferrari and Volvo applications. Verify the 18 mm thread size, 22 mm hex size, 4-wire configuration, and connector style before installation. Because fitment varies by chassis and engine configuration, confirm the vehicle year, make, model, and position against the application list for Ferrari 348 Spider, Ferrari 348 GTB, Ferrari 348 GTS, Ferrari 512 TR, Ferrari Mondial t, and Volvo 850.

For best results, inspect the exhaust bung threads and wiring routing before installation, and ensure the connector locks fully into place. Bosch 13301 is a specific-fit replacement, so matching the upstream location and harness layout is important for proper operation.

Quality Assurance

Bosch supplies this oxygen sensor as an OE-proven replacement backed by decades of oxygen-sensing development and aftermarket support. The design uses advanced ceramic elements, optimized heater control, and high-temperature-resistant materials to maintain consistent performance in demanding exhaust environments.