The Rollover Valve is an OEM (Original Equipment Manufacturer) replacement part in the vehicle's fuel system. This valve serves an important role in preventing fuel from leaving the fuel tank should the vehicle become involved in an accident that would cause it to "roll over" or be in an upside-down position. This valve helps to prevent the possibility of potential fire. For the corresponding Rollover Valve Grommet, please reference Part# 606068.This is a Clearance Item, If sold out - Contact us for price and availability. No further discounting applies to Clearance Items.