Kwiksen Oxygen O2 Sensor 13782 234-4174 Upstream Downstream Replacement For Mercedes-Benz ML55 AMG SL600 ML320 E320 E430 S500 COMPATIBLE WITH OEM: 13782 234-4177 SG1152 Length (Sensor to Lead): 400 mm ( 15.75 inch). Wires: 4 Meet the professtional specification as OEM parts, for stable performance & durability Warranty: 1 year unlimited miles. Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase.