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Cobb Coolant Overflow Tank – 2004-2007 WRX/STI

Cobb Coolant Overflow Tank – 2004-2007 WRX/STI


Use the COBB Overflow Tank and Washer Reservoir filler to clean up your engine bay and gain additional room for intercooler piping.

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This is the same Coolant Overflow Tank + Washer Reservoir filler combo that is included with our 2004-2007 WRX and STI Front Mount Intercooler Kits. As a stand-alone item it helps to clean up the engine bay and tuck the over flow tank lower and out of sight. Constructed of aluminum and powder coated in a wrinkle black finish helps keep the engine bay tidy. The Washer Reservoir consists of a tubing extension, delrin base, and delirn cap. It is specific for 2006-2007 WRX/STI which has the reservoir located behind the bumper cover.


Subaru Coolant Overflow Tank with Washer Fluid Relocation Kit STI / WRX 2004-2007

  • Wrinkle Black Powder Coat Finish
  • Laser Etched COBB Logo
  • Utilizes Factory Overflow Cap
  • .5L Volume


This part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles.

Additional Information

Weight 3.4 lbs
Dimensions 16.4 × 7.7 × 5.1 in


  • 2004-2007 WRX/STI


Installation Guide

Install Guide