Gates 34723 Engine Coolant Thermostat

Gates Integrated Housing Thermostat for Land Rover Discovery

The Gates 34723 integrated housing thermostat is built for accurate engine coolant temperature control in 1999-2004 Land Rover Discovery models. It uses an OE-performance design to help maintain stable operating temperature and support efficient engine operation.

Gates integrated thermostat housings are part of a product line focused on modern cooling-system designs where the thermostat and housing are integrated. The 34723 follows that approach for direct replacement service on the Discovery platform.

Key Features

• Integrated Housing Thermostat design for cooling-system service
• Start-to-open temperature: 180°F / 82°C
• Jiggle pin weep hole: Yes
• Jiggle pin/check valve: Yes, with 1 check valve
• OE Performance comparison rating
• Outlet inside diameter: 1.045 in, 1.13 in, 1.13 in
• Outlet outside diameter: 1.3 in, 1.365 in, 1.365 in
• Electric: No
• Number of bolt holes: 0

Detailed Description

Gates 34723 is an engine coolant thermostat assembly for 1999-2004 Land Rover Discovery applications. It is engineered to regulate coolant flow at the specified opening temperature so the engine can reach and maintain normal operating range. For Land Rover Discovery cooling-system repair, this thermostat provides an OE-performance replacement option where integrated housing designs are used.

This part cross-references Dorman - OE Solutions 902-5163 for the same application.

What It Helps Address

• Engine running too cool or taking too long to warm up
• Temperature fluctuation caused by a worn thermostat
• Coolant flow control issues in the thermostat housing assembly
• Overheating concerns related to restricted thermostat operation
• Cooling-system service needs on Land Rover Discovery models

Installation Notes and Tips

Verify the engine application before installation and confirm the thermostat orientation matches the original setup. Inspect the sealing surfaces, coolant condition, and housing condition during service. Because this is an integrated housing thermostat, compare the outlet dimensions and temperature rating to the removed part before installation on your Land Rover Discovery.

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications with an emphasis on accurate temperature regulation and OE-performance replacement standards. The 34723 is built to serve as a direct-fit cooling-system service part for the listed Discovery applications.