OKAY MOTOR Upstream Air Fuel Ratio Sensor for 2004-2005 Acura EL Honda Civic 1.7L Front Air Fuel Ratio Oxygen Sensor for 04-05 Honda Civic 1.7L Acura EL Part #: 24664, 36531-PLR-003, 234-9017, ES10936, 2349017 New Aftermarket Replacement Unit. 180-days Manufacturer Type Warranty Limited. Application Guides: Civic 1.7L; Acura EL 1.7L