Gates 51596 Molded Coolant Hose Replacement Engine Heater Hose

The Gates 51596 is a precision-molded coolant hose engineered as a direct OE-quality replacement for engine cooling system applications. Designed to maintain reliable coolant flow between the engine and heater core, this hose meets or exceeds original equipment specifications for a confident, leak-free fit.

Key Features:

• EPDM construction — Tube, reinforcement, and cover resist heat, ozone, and chemical coolants for long service life
• Electrochemical degradation (ECD) resistance — Engineered compound resists the leading cause of coolant hose failure, where galvanic reactions create micro-cracks in the hose tube
• Vacuum collapse resistance — Specifically engineered materials reduce the need for internal support springs in many applications
• Pre-molded shape — Precision-formed to match OEM routing for easier installation and a secure, sealed fit
• Compatible with most coolants — Unaffected by most coolants and non-oil-based coolant additives, including extended-life formulas
• High-pressure rated — Built to withstand standard cooling system operating pressures without swelling or ballooning
• Temperature range — Rated for -40°F to +275°F (-40°C to +135°C)
• Meets SAE 20R4 EC Class D1 requirements

Gates is a globally recognized leader in engine hose technology, and the 51596 reflects their commitment to OE-equivalent quality in the automotive aftermarket. Whether replacing a worn, cracked, or leaking heater hose, the Gates 51596 delivers a dependable, long-lasting solution. Gates recommends replacing hose clamps each time a new coolant hose is installed.