Honda Civic Oxygen Sensor Kit 234-5010 234-4351 36531-RCA-A02

This four-sensor oxygen sensor kit is designed for 2006-2011 Honda Civic 1.8L R18A1 engines, also compatible with some 2012-2015 Civic 2.0L models. The kit includes four oxygen sensors (two upstream and two downstream) to monitor oxygen content in the exhaust and feed back to the ECU to optimize air-fuel ratio for efficient combustion and reduced emissions. OEM numbers include 234-5010, 234-4351, 36531-RCA-A02, 36531-P8D-J21, 36532-PZA-L01 and 36532-RCA-A51 for cross-checking with original parts. Replacement difficulty: medium. Use a dedicated oxygen sensor socket and operate with a cold engine to avoid thread damage. For B2B buyers, this kit is from KLP brand, offering an economical OEM replacement solution suitable for bulk purchases for repair shops or fleets, effectively addressing high fuel consumption or engine fault lights.