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COBB Coolant Overflow Tank 2022-2023 WRX

SKU 800670
Original price $275.00 - Original price $275.00
Original price
$275.00 - $275.00
Current price $275.00

The OEM Coolant Overflow Tank does its job well enough but the cheap plastic material is ugly and can potentially crack over time, especially when exposed to extreme heat via hard driving or extreme climate. Its shape is also clumsy and obtrusive. Enter the COBB Coolant Overflow for your VB WRX!

Constructed of welded aluminum and carrying a capacity of 1.1L, the COBB Overflow offers more capacity than the OEM tank. Internal and external anodizing of the tank ensures a long lasting finish. Internally welded fill and vent tubes provide a leak-free construction. The fill tube extends to the bottom of the reservoir to prevent air ingestion as coolant level expands and contracts. The vent tube exits through the bottom of the tank and can be routed out the bottom of your car with included silicone tubing. An integrated dip stick is anodized red and allows for quick reference of coolant level.

The main reservoir cap is a snug fitting injection molded plastic. A blue anodized billet cap finishes off the included fill tube for windshield washer fluid. The COBB Coolant Overflow is a sharp solution to an otherwise bland component of your VB WRX's engine bay.


  • 1.1L Capacity
  • Anodized and TIG Welded Aluminum Tank
  • Included Windshield Fluid Filler Neck
  • Integrated Dip Stick for Coolant Level
  • Simple Install and Service

Customer Reviews

Based on 1 review
Cobb coolant overflow tank for 22 wrx

I decided to get rid of the ugly plastic oem overflow tank with the Cobb. They state it holds 1.1 L which is more than the oem. Fit and finish were perfect. I did receive the wrong O-ring for the cap so I sourced 1 from work. Overall it cleans up the appearance of the engine bay and possibly aid later installing a bigger aftermarket radiator.


Thank you for your 5 Star Review and added pic, as well as for sharing your experience with the COBB Coolant Overflow Tank for your 2022-2023 WRX. It is great to hear that the tank's fit and finish were perfect and that it not only improved the appearance of your engine bay but also provides a larger capacity than the OEM tank. The potential for accommodating a bigger aftermarket radiator is an added benefit! Enjoy!


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