Bosch Premium Oxygen Sensors with OE SmartLink ? provide the closest match to the original equipment manufacturer''s sensor performance. Each sensor is manufactured with a 2'' length of sensor wire for maximum replacement of worn wire.Product Features:Submersible connection system protects against water and contamination and withstands the effects of extreme temperature and engine vibrationSpecial heat-resistant Posi-Lock connectors can be easily unscrewed and re-connected, unlike butt connectorsUser-friendly instructions. Most Emissions products are available for in-store pickup from Advance Auto Parts.