SG1849 /234-4587 O2 Oxygen Sensor Upstream or Downstream for 2007-2010 Dodge Ram 1500 V6 3.7L COMPATIBLE WITH OEM: ES20197, 23159, SG1849, 234-4587, 15510 Length (Sensor to Lead): 450 mm (17.71 inch). Wires: 4 Downstream oxygen sensor 2 for 2008-2010 Chrysler Town & Country V6 4.0L Upstream oxygen sensor 1 for 2004-2010 Dodge Caravan L4 2.4L 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.