Radiator Water Filler 19050RNBA01 For CSX 2006-2011 CIVIC 2006 2007 2008 2009 2010 2011 This radiator water filler cap is designed for use with CSX and CIVIC models from 2006 to 2011.It helps maintain proper cooling system function by regulating pressure and preventing overheating.Constructed from plastic, the cap meets OEM specifications with a vapor emission limit of 105℃, performance under normal operating conditions.The ergonomic design allows for easy installation and removal, making coolant maintenance straightforward without the need for special tools.This replacement part provides a secure fit to help prevent leaks and supports consistent cooling system efficiency.Suitable for routine maintenance, it is a functional component for vehicle owners focused on keeping their engine cooling system in working order.