Bosch Upstream Oxygen Sensor for Porsche 996 (2002–2005)

This Bosch upstream oxygen sensor is a direct-fit replacement for Porsche 996 applications from 2002–2005 listed in the fitment table below. 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. A lazy pre-cat oxygen sensor can skew fuel trim, drivability, and catalyst efficiency diagnostics. Common fitments in this range include 40th Anniversary Edition, Carrera, Carrera 4, Carrera 4S, Carrera S, GT3, Targa trim levels.

Technical Details

• Manufacturer part number: 16433
• Brand: Bosch
• Application range: Porsche 996 (2002–2005)
• Direct-fit heated oxygen sensor
• Upstream / pre-catalyst sensor location
• Bosch direct-fit sensor with OE-style connector

Fitment & Compatibility

Use the fitment table below to confirm Porsche 996 coverage and to check year and trim details. Column 4 submodel notes can matter on Porsche applications, so it is worth matching the table to the car before ordering.

If you want a second set of eyes on fitment, send us the VIN and we will help narrow it down. We have been doing Porsche brake and parts work for over 20 years, and we still treat fitment questions like they matter.