COBB Coolant Overflow Tank Subaru WRX Sedan (2022-2025) 800670

Fitment Information

• Subaru WRX Sedan (2022, 2023, 2024, 2025)
• Subaru WRX TR Sedan (2024) 
  • Fits Manual and Automatic Transmission

Specs & Features

• Increased Capacity: Holds 1.1 Liters of coolant (more than stock), giving your cooling system extra headroom during hard driving or hot track days.
• Aluminum Armor: Constructed from TIG-Welded Aluminum with an anodized finish, eliminating the risk of the factory plastic cracking under extreme heat cycles.
• Smart Integration: Features a custom Windshield Washer Fluid Filler Neck with a billet blue cap, keeping your engine bay functional and uniform.
• Leak-Free Design: Internally welded fill and vent tubes extend to the bottom to prevent air ingestion as the coolant expands and contracts.
• Service Made Easy: Includes a built-in Red Anodized Dipstick for quick, visual level checks without needing to squint through yellowing plastic.
• Direct Fit: Engineered as a bolt-on replacement for the clumsy stock tank, improving both form and function in minutes.

Product Description

The 2022+ VB WRX is an incredible machine, but Subaru dropped the ball on the coolant tank. The stock unit is a clumsy, translucent plastic blob that looks out of place and, worse, turns brittle and yellow after a few years of heat cycling. The COBB Tuning Coolant Overflow Tank is the permanent fix. It replaces that "plastic fantastic" failure point with a piece of precision-engineered aluminum art.

COBB Tuning didn't just make a metal box; we engineered a better system. This tank holds 1.1 Liters, increasing your capacity over stock. The construction is bomb-proof TIG-Welded Aluminum, anodized inside and out to resist corrosion and look stealthy black forever. We also solved the packaging headache by including a relocated Windshield Washer Fluid Filler Neck, topped with a sweet blue billet cap. It cleans up the messy corner of the engine bay instantly.

Beyond the looks, this tank is designed to protect your engine. The internal fill tubes are submerged to the bottom, ensuring that as your coolant expands and contracts, the system only pulls in fluid—never air. We also added a Red Anodized Dipstick. No more shaking the car to see the fluid line; just pull the stick, check the level, and get back to driving.

COBB Tuning brings you the parts that finish the build. This overflow tank is the perfect example of "form meets function." It solves the durability issues of the stock plastic, adds essential fluid capacity, and looks incredible while doing it. Whether you are building a show car or a track weapon, this is the upgrade your engine bay deserves.