Kwiksen Heated Universal O2 Oxygen Sensor Upstream or Downstream 15703 234-4063 for 2000-2003 Chevrolet Corvette Isuzu Express 1500 2500 3500 GMC Sierra Savana 1500 2500 3500 COMPATIBLE WITH OEM: 15703 234-4063 Length (Sensor to Lead): 320mm /12.59 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.