Gates CO34916 Engine Coolant Water Inlet

OE-Style Coolant Outlet for Lexus and Toyota

The Gates Coolant Outlet CO34916 is an OE-exact engine coolant water inlet built for select Lexus and Toyota applications. It uses cast aluminum construction and the original-style outlet dimensions to support a proper seal and consistent coolant routing in the cooling system.

Compatible with Lexus GS300, Lexus IS300, Lexus SC300, and Toyota Supra applications, this Gates CO34916 coolant outlet is a direct-fit replacement for lower coolant inlet and coolant outlet locations on the listed vehicles.

Key Features

• Cast aluminum construction for strength and corrosion resistance
• OE exact design for original-style fit and function
• Outlet inside diameter: 1.306 in.
• Outlet outside diameter: 1.495 in.
• 2-bolt mounting pattern
• Coolant outlet contents only; no gasket quantity specified
• Gates Coolant Outlet line coverage for water outlets and thermostat housing assemblies

Product Details

Gates CO34916 is part of the Coolant Outlet product line, which focuses on replacing common aftermarket problem areas with a more consistent OE-style solution. This engine coolant water inlet is engineered to match the original part’s shape and dimensions, helping maintain proper coolant flow at the thermostat housing connection. It is a practical replacement for 1992-2005 Lexus and Toyota platforms where the lower coolant inlet or coolant outlet is part of the cooling system service.

This part cross-references Dorman OE Solutions 902-5070 for the same application.

What It Helps Fix

• Cracked or warped coolant outlet housing
• Coolant leaks at the thermostat housing connection
• Improper sealing caused by worn OE-style outlet surfaces
• Cooling system service issues on Lexus GS300, IS300, SC300, and Toyota Supra models
• Replacement needs for a damaged lower coolant inlet or coolant outlet

Installation Notes

Verify the outlet diameter, bolt-hole count, and vehicle application before installation. This part uses a 2-bolt design and is listed with no gasket quantity specified, so confirm the required sealing components for your specific repair. Clean the mating surfaces thoroughly and inspect the surrounding cooling system components before reassembly.

Quality Assurance

Gates designs this coolant outlet to fit and perform like the original part while addressing common aftermarket material and manufacturing concerns. The cast aluminum construction and OE-exact specification support long service life in the intended Lexus and Toyota applications.