Denso wide-band Air/Fuel Ratio Sensor with 4 wire 30.71 inch long wiring harness Part Number: 234-9120 Application: Subaru: (2004-2010 Forester, 2004-2008 Impreza, 2005-2007 Legacy, 2005-2007 Outback) / Saab: (2006 9-2X) Parts Interchange: 32010411, 22641AA490, 22641AA211, 22641AA32A Tarnish-proof platinum electrodes provides longer life and maintains accuracy Quick-response planar zirconia element can quickly detect oxygen concentration Measures Air/Fuel ratios from approximately 12:1 to 19:1 Package Quantity: 1 Item Dimensions: 5.75 x 2.19 x 1.88 Inches Item Weight: 0.25 Pounds