Gates 51349 Premium Modular Coolant Hose

The Gates 51349 Premium Modular Coolant Hose is an OE-quality replacement hose designed for precise fitment in specific automotive cooling system applications. This pre-shaped modular coolant hose is engineered to meet original equipment specifications and includes integrated components such as hose branches, quick-connectors, sensors, or restrictors as required by the original design.

Manufactured with a durable EPDM (ethylene propylene diene monomer) tube and synthetic fiber knit reinforcement, the Gates 51349 features a heat- and ozone-resistant EPDM cover that provides superior protection against the elements. The hose construction is specifically engineered to resist electrochemical degradation (ECD), which is the leading cause of coolant hose failure. This occurs when the hose, coolant, and metal fittings create a galvanic reaction that breaks down hose materials over time.

The advanced material compound resists collapse under vacuum conditions, eliminating the need for internal support springs in many applications. The hose meets stringent SAE 20R3 EC Class D1 standards for hoses under 25mm (1 inch) inside diameter and SAE 20R4 EC Class D1 for hoses 25mm and larger, ensuring reliable performance in demanding cooling system environments.

Operating temperature range spans from -40°F to +275°F (-40°C to +135°C), making this coolant hose suitable for both extreme cold and high-temperature engine conditions. The molded construction ensures a perfect seal and eliminates guesswork during installation. Gates recommends replacing hose clamps each time a new coolant hose is installed for optimal system integrity.

Key Features:

• Pre-shaped modular design for precise OE-equivalent fitment
• EPDM tube with synthetic fiber knit reinforcement
• Heat- and ozone-resistant EPDM cover
• Engineered to resist electrochemical degradation
• Vacuum collapse resistant materials
• Meets SAE 20R3/20R4 EC Class D1 standards
• Temperature range: -40°F to +275°F
• Integrated OE components (quick-connectors, branches, sensors as applicable)

Material Specifications: EPDM, plastic, steel components

Note: Not for use in fuel or oil transfer applications. This is a cooling system component only.