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

The COBB Coolant Overflow Tank offers a durable, high-quality upgrade over the stock plastic reservoir in your 2022–2025 Subaru WRX. Constructed from TIG-welded aluminum and anodized for long-lasting finish, this tank delivers improved reliability, better capacity management, and a premium under-hood aesthetic for both stock and modified engines.

KEY FEATURES

• 1.1 L capacity larger than stock to better handle coolant expansion under load
• Welded aluminum construction for improved durability and resistance to cracking or heat-related stress
• Anodized internal and external surfaces to resist corrosion and maintain appearance over time
• Integrated dip-stick for quick coolant level checks
• Includes windshield-washer fluid filler neck for clean engine-bay packaging
• Factory-style fitment with provided brackets and hardware no cutting or modification required

TECHNICAL SPECIFICATIONS

• TIG-welded aluminum tank for strength and longevity
• Size: 1.1 liters optimized to accommodate coolant expansion under boost or heavy use
• Anodized finish for corrosion resistance and clean engine-bay appearance
• Includes dip-stick, washer-filler neck adapter, mounting brackets, and installation hardware
• Engineered to maintain OEM coolant routing and pressure behavior while offering improved reliability

VEHICLE FITMENT

• Subaru WRX 2022–2025

The COBB Coolant Overflow Tank transforms a fragile, plastic factory component into a robust, performance-ready upgrade delivering increased reliability, improved coolant management, and a clean, purposeful look under the hood.