Gates 23615 Molded Upper Radiator Coolant Hose

The Gates 23615 is a precision-molded upper radiator coolant hose designed as a direct-fit replacement for Subaru Outback models equipped with the 3.0L H6 engine. This hose is positioned on the upper right (passenger side) of the cooling system, providing critical coolant flow between the engine and radiator.

Engineered to Resist Electrochemical Degradation:

Gates engineers this molded coolant hose with advanced EPDM rubber compound specifically formulated to resist electrochemical degradation (ECD), the leading cause of premature hose failure. The hose construction features an EPDM inner tube with synthetic fiber knit reinforcement and a heat- and ozone-resistant EPDM cover, providing exceptional durability in demanding cooling system environments.

Key Features & Benefits:

• Factory-molded design ensures precise OE fitment and properly sealed connections
• Aramid or rayon knit reinforcement provides strength and vacuum collapse resistance
• Temperature range from -40°F to +275°F handles extreme operating conditions
• Meets SAE 20R4 EC Class D1 specifications for automotive coolant hose applications
• Resistant to modern coolant additives, heat, and ozone exposure
• Direct-fit replacement saves time and eliminates trips to the dealership
• Approved for marine applications as well as automotive use

This molded hose is pre-shaped to match the original equipment routing, eliminating fitment issues and ensuring proper coolant flow. Gates recommends replacing hose clamps each time a new coolant hose is installed for optimal sealing performance. Not intended for fuel or oil transfer applications.