Direct-fit & Universal Oxygen Sensor Application List

Also known as O2 sensors, HEGO sensors, Lambda sensors

Model	Engine Code	Chassis	Years	Price  inc VAT and P&P = in stock
Toyota Corolla 1.6i				Direct-fit		Universal
Corolla 1.6i VVTi 16v 4cyl 110bhp	3ZZ-FE	Estate _E12J_, _E12T_	01/2002 to 02/2007	£ 64.94
Corolla 1.6i VVTi 16v 4cyl 110bhp	3ZZ-FE	Verso ZDE12_, CDE12_	01/2002 to 05/2004	£ 64.94
Corolla 1.6i VVTi 16v 4cyl 110bhp	3ZZ-FE	Hatchback ZZE12_, NDE12_, ZDE12_	01/2002 to 12/2006	£ 64.94
Corolla 1.6i VVTi 16v 4cyl 110bhp	3ZZ-FE	Verso ZER_, ZZE_, R1_	04/2004 to 03/2009	£ 64.94
Corolla 1.6i VVTi 16v 4cyl 110bhp	3ZZ-FE	Saloon _E12J_, _E12T_	08/2003 to 07/2007	£ 64.94

Pre-cat / Post-cat? What does that mean?

• There will be at least one sensor at the front of the vehicle, mounted into the exhaust pipe or manifold somewhere before the catalytic convertor.
  This is known as the front, pre-cat or upstream sensor.
  V-type engines (V6, V8 etc) will often have one pre-cat sensor for each bank of cylinders.
  
  
• There will then be another sensor positioned after the catalyst, known as the rear, post-cat or downstream sensor.
  Under normal circumstances, the rear sensor does not have any direct impact on the fuel mixture (and therefore the running and emissions of the engine) - it is there to offer a comparison value after the catalyst, allowing the car to monitor the performance of the cat.