Oxygen Sensor 234-4133 Upstream O2 Sensor 1 for 1997 1998 1999 2000 Mercedes-Benz C230 2.3L COMPATIBLE WITH OEM: 2344133 0015400417 Length (Sensor to Lead):1200 mm. Wires: 4 Heated O2 Oxygen Sensor Pre-Cat for 00-97 Mercedes-Benz C230 L4-2.3L OE Plug O2 Oxygen O2 Sensor 1 Upstream For 1997-2000 Mercedes-Benz C230 L4-2.3L Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase. Warranty: 1 year unlimited miles.