LS1-O2 - Oxygen Sensor Adapter Harness
These adapters allow rear oxygen sensors to be used in place of the front oxygen sensors on certain GM vehicles. The rear oxygen sensors have stronger heaters in them which keep the computer in closed loop. Typical applications are in vehicles which have aftermarket exhaust manifolds (headers).
Fully Plug and Play with the factory harness and sensors
Factory-type weather-proof connectors with silicon seals
Crosslinked automotive wire (Packard spec. M-2023, -49ºF to 257ºF
Four-terminal flat (LS1 / LT1) style connector to four-terminal square (LS1) style connector.