Gates 21466 Premium Molded Curved Radiator Coolant Hose

The Gates 21466 is a premium molded curved coolant hose engineered as a direct OEM-quality replacement for upper, lower, bypass, heater, and other coolant circuit applications. Pre-shaped to match the factory routing of the original hose, it installs quickly and seals reliably without modification.

Key Features:

• EPDM construction — tube, reinforcement, and cover are all formulated to resist heat, ozone, and chemical coolant attack
• Electrochemical degradation (ECD) resistance — engineered to combat the leading cause of coolant hose failure, where the hose, coolant, and metal fittings form a galvanic cell that causes internal micro-cracking
• Synthetic fiber knit reinforcement — aramid or rayon knit (application-dependent) provides structural integrity and resists vacuum collapse, reducing the need for internal support springs
• Pre-molded curved shape — factory-shaped for a precise, leak-free fit with no unnecessary strain on hose connections or fittings
• OEM-quality specifications — meets SAE 20R4 Class D2 and DIN 73411 Class A requirements
• Approved for marine applications — suitable for use beyond standard automotive cooling systems

Gates' molded coolant hose line is one of the most comprehensive replacement lines on the market, precision-manufactured with exclusively developed factory processes for compatibility across a wide range of vehicles. Gates recommends replacing hose clamps each time a new coolant hose is installed to ensure a secure, long-lasting seal.