Gates CO34912 Engine Coolant Filler Neck

Gates Coolant Outlet for Nissan Cooling Systems

The Gates Coolant Outlet CO34912 is an OE-style engine coolant filler neck built for Nissan cooling system service. It is made from plastic and follows original equipment dimensions for a direct replacement on select Altima and Maxima applications.

Gates Coolant Outlets are part of the Coolant Outlet product line, which covers water outlets, coolant filler necks, and thermostat housing assemblies for repair work that calls for an OE-matching cooling system component. The CO34912 is an OE exact replacement designed to fit and perform like the original part.

Key Features

• Engine coolant filler neck for cooling system repair
• OE exact replacement design
• Plastic construction
• Two-bolt mounting pattern
• Outlet dimensions: 1.37 in outside diameter, 1.17 in inside diameter, and .31 in outlet section
• No gasket or seal included in the listed contents
• Cross-references Dorman - OE Solutions 902-5938 for the same application

Detailed Description

Gates CO34912 is an engine coolant filler neck engineered for direct replacement in select Nissan cooling systems. It is listed for 2007-2013 Nissan Altima, 2014-2018 Nissan Altima, and 2009-2015 Nissan Maxima, with fitment noted as coolant outlet or coolant fill flange applications. The part number CO34912 is built to match original equipment form and function, helping restore proper coolant routing and service access at the outlet location.

This coolant outlet is part of the Gates Coolant Outlet line, which focuses on OE-style coverage for common cooling system service points. For buyers searching for a Nissan Altima coolant outlet, Nissan Maxima coolant fill flange, or Gates CO34912 replacement, this part provides a direct-fit option for the listed vehicles.

What It Helps Address

• Cracked or damaged coolant filler neck housing
• Coolant leaks at the outlet or fill flange
• Improper sealing at the cooling system connection point
• Service issues caused by worn OE plastic outlet components
• Replacement needs on Nissan Altima and Nissan Maxima cooling systems

Installation Notes and Tips

Verify the outlet diameter, bolt-hole pattern, and vehicle application before installation. This part is listed with two bolt holes, no bypass holes, and no gasket or seal in the contents. Confirm the original mounting surface and hose connection points match the OE-style dimensions before final assembly.

Fits 2007-2013 Nissan Altima, coolant outlet; fits 2014-2018 Nissan Altima, coolant outlet; fits 2009-2015 Nissan Maxima, coolant fill flange/coolant outlet. Search terms such as Nissan Altima coolant filler neck replacement and Nissan Maxima coolant outlet replacement align with this application.

Quality Assurance

Gates positions this coolant outlet as an improved, cost-effective OE-style replacement for common design, manufacturing, and material issues found in other aftermarket options. The CO34912 is built for original-equipment fit and long service life in the listed Nissan applications.