This Bosch upstream left oxygen sensor is a direct-fit replacement for Porsche Cayenne S applications listed in the fitment table below. It sits ahead of the catalytic converter and provides the air-fuel signal the DME uses for fuel trim control. 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: 17158
- Type: Heated wideband oxygen / air-fuel ratio sensor
- Position: Upstream left, before catalyst
- Direct-fit connector and harness for OE-style installation
- Pre-coated threads with anti-seize compound for service installation
Fitment & Compatibility
Use the fitment table below to confirm year and submodel. V8 Porsche applications can use side-specific pre-cat sensors, so verify the bank location and original part number before ordering.
Side-specific oxygen sensors are easy to mix up when the plugs look similar at a glance. We have been working through Porsche fitment questions for over 20 years, and checking bank location is still standard practice.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2003 | Porsche | Cayenne | S | |
| 2004 | Porsche | Cayenne | S | |
| 2005 | Porsche | Cayenne | S | |
| 2006 | Porsche | Cayenne | S |