Gates 51619 Premium Modular Coolant Hose with Quick Connector

The Gates 51619 Premium Modular Coolant Hose is an OEM-quality molded coolant hose designed for heater-to-engine applications. This pre-formed hose features integrated quick-connect fittings and is engineered to provide a precise fit and reliable performance in modern engine cooling systems.

Construction and Materials:

• EPDM rubber inner tube with synthetic fiber knit reinforcement
• Heat-, ozone-, and chemical coolant-resistant EPDM outer cover
• Integrated plastic and steel components including female quick connector
• Molded design for exact OEM fitment and routing
• Specifically engineered materials resist collapse under vacuum conditions

Technical Specifications:

• Centerline length: 20 inches (508mm)
• End 1 inside diameter: 3/4 inch (19mm)
• End 2 inside diameter: 13/16 inch (20mm)
• Temperature range: -40°F to +257°F (-40°C to +125°C)
• Meets SAE 20R3 EC Class D1 and SAE 20R4 EC Class D1 standards
• Includes one quick-connect fitting for tool-free installation

Key Features:

• Engineered to resist electrochemical degradation, the leading cause of coolant hose failure
• Manufactured with OEM-exact components for seamless integration
• Vacuum-resistant construction prevents hose collapse during operation
• Premium EPDM compound provides superior resistance to coolant chemicals
• Factory-molded design eliminates need for custom bending or fitting

OEM Cross-References: Replaces GM 13251453, 42348374, 1818493; ACDelco 24867L; Dayco 87993; and other equivalent part numbers.

Installation Note: Gates recommends replacing all hose clamps each time a new coolant hose is installed to ensure proper sealing and prevent leaks. Do not use this hose for fuel or oil transfer applications.