Oxygen Sensor (4 Wire Square Black) Gen III

APPLICATION: LT1, LS and Vortec Engines with Drive by Cable and Drive by Wire Throttle Body

These Oxygen Sensors are used on all PSI harnesses including LT, LS and Vortec engines (HAR-1012, HAR-1013, HAR-1016, HAR-1017, HAR-1018, HAR-1019, HAR-1090, HAR-1092). They are also used in many OEM applications including all LS1 Camaro/Firebird engines.

Oxygen Sensors (O2's), are one of the most important parts of an LSX Swap. They relay the Air Fuel Ratio back to the ECM so your engine runs Optimally.

O2 Sensors are a Wear Item, just like a spark plug or serpentine belt. O2 Sensors that are high mileage, have been submerged in water, have been removed from a junkyard with a torch, or are in any other way damaged, should be replaced.

PSI Wiring Harnesses are Designed to use a Specific O2 Sensor, usually based on engine generation.