Heated Universal Upstream or Downstream O2 Oxygen Sensor 1 and Sensor 2 ,SG1815 234-4078 for 1994-2004 Dodge Chrysler COMPATIBLE WITH OEM NUMBERS:234-4078, SG1815 Fit 1994-2004 Dodge Upstream or Downstream Improved protection tube and increased thermal resistance prevents premature sensor failure and long warranty This is Brand New & High Quality Aftermarket Product service with Laser weld and Viton sealing system. Meet the professtional specification as OEM parts, for stable performance & durable Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase