Gates CO34857 Engine Coolant Hose Flange

Gates Coolant Outlet for Honda Civic

The Gates Coolant Outlet CO34857 is an OE-style engine coolant hose flange built for direct replacement service on select Honda Civic applications. It uses cast aluminum construction and follows the original fit and function expected for cooling system repairs.

Key Features

• Cast aluminum coolant outlet for durability and corrosion resistance
• OE exact replacement design for proper fit and sealing surfaces
• Three-bolt flange configuration
• Dual outlet diameters: 0.671 in and 0.319 in outside diameter
• Dual inside diameters: 0.500 in and 0.224 in
• Gates Coolant Outlet line coverage for water outlets and thermostat housing assemblies

Product Details

Gates CO34857 is part of the Gates Coolant Outlet product line, which focuses on replacement coolant outlets and related housing components for cooling system service. This coolant hose flange is engineered to match original equipment dimensions and performance expectations, making it a direct-fit choice for 2006-2011 Honda Civic cooling system repairs. The cast aluminum body supports long service life in a high-temperature engine environment, and the OE exact design helps maintain proper hose connection and coolant flow. This part number, CO34857, is also a practical reference when sourcing a Honda Civic coolant outlet replacement.

This part cross-references Honda 19425RNAA00 for the same application.

Common Repair Uses

• Cracked or leaking coolant outlet housing
• Damaged hose connection at the engine coolant flange
• Corrosion or wear at the original coolant outlet
• Cooling system seepage around the outlet mounting area
• Replacement during thermostat housing or coolant service on a Honda Civic

Installation Notes

Verify hose diameter, bolt-hole pattern, and outlet dimensions before installation. Clean the mating surfaces thoroughly and inspect the connected hoses and seals for wear before reassembly. This coolant outlet does not list gasket or seal contents, so confirm the required sealing components for your repair before starting work. Fits 2006-2011 Honda Civic, N/A.

Quality Assurance

Gates positions this coolant outlet line as an OE-style replacement program with full line coverage for cooling system service. CO34857 is built to match original fit and performance requirements for the listed Honda Civic applications.