Bosch Wideband Oxygen Sensor for Porsche Applications

This Bosch wideband oxygen sensor is a direct replacement for Porsche applications and aftermarket systems that call for Bosch 17025. It uses a heated wideband design to deliver accurate air-fuel ratio feedback for tuning, monitoring, and closed-loop correction. Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.

Technical Details

• Manufacturer part number: 17025
• Type: Wideband oxygen sensor / air-fuel ratio sensor
• Sensor type: Heated, wideband
• Thread diameter: 18 mm
• Wire count: 5-wire
• Lead length: 914 mm / 36 in.

Fitment & Compatibility

Confirm the part number, connector style, sensor family, and controller compatibility before ordering. Wideband oxygen sensors are not interchangeable across every setup.

Wideband replacements go smoothly when the controller and sensor family actually match. We have been helping Porsche owners sort parts and fitment questions for over 20 years, and sensor compatibility is still one of the first things we verify.