COBB Coolant Overflow Tank (800655) | Subaru WRX 2008-2014 / STI 2008-2014

The COBB Coolant Overflow Tank offers a durable, high-capacity replacement for the factory plastic reservoir on your 2008–2014 Subaru WRX or STI. Designed to withstand elevated temperatures and long-term engine bay conditions, this upgraded tank provides improved reliability while delivering a clean, performance-oriented appearance.

KEY FEATURES

• High-quality aluminum construction replaces the OEM plastic reservoir
• Improved heat resistance and long-term durability for demanding engine bay environments
• Increased reliability compared to factory tanks prone to discoloration or cracking
• Direct-fit design integrates cleanly with factory hoses and mounting points
• Sleek, performance-styled exterior enhances overall under-hood appearance
• Ideal for stock, tuned, or track-driven EJ-powered vehicles

TECHNICAL SPECIFICATIONS

• TIG-welded aluminum tank engineered for strength and long service life
• Designed to maintain factory coolant system routing and pressure behavior
• Powder-coated finish for corrosion resistance and durability
• Includes mounting bracket and hardware for straightforward installation
• Compatible with OEM cap and coolant hose configurations

VEHICLE FITMENT

• Subaru WRX 2008–2014
• Subaru STI 2008–2014

COBB delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.