The COBB coolant overflow tank kit for 2004–2007 Subaru WRX and STI replaces the OEM reservoir and includes a washer fluid relocation kit to tidy under-hood plumbing. It provides a direct-fit replacement intended to consolidate coolant overflow and reroute washer fluid plumbing for a cleaner engine bay. The kit suits owners looking for a neater layout and simplified maintenance access.
Cobb 04-07 Subaru WRX / STI Coolant Overflow Tank w/ Washer Fluid Relocation Kit