COBB Silicone Radiator Hoses (B22400-BK) | Subaru WRX 2008-2014 / STI 2008-2021

Upgrade the reliability and consistency of your cooling system with COBB Silicone Radiator Hoses, designed to replace aging factory rubber lines on your turbocharged Subaru. These hoses maintain shape and sealing under elevated temperatures and pressure, helping keep coolant flow stable during spirited driving, track sessions, and daily commuting.

Key Features

• Direct replacement for OEM upper and lower radiator hoses
• Improved durability over stock rubber components
• Maintains hose integrity under elevated coolant temperatures
• Designed to support both stock and tuned cooling demands
• Engineered for consistent performance in street and track use

Technical Specifications

• Multi-ply silicone construction for enhanced pressure resistance
• Heat-resistant materials reduce swelling and softening over time
• Precision-molded bends for proper routing and clearance
• Compatible with factory-style clamps and OEM radiator connections
• Tested to withstand repeated thermal cycling in turbocharged applications

Vehicle Fitment

• Subaru WRX 2008-2014
• Subaru STI 2008-2021

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