Gates 34238 Engine Coolant Thermostat

OE Type Thermostat for Ford and Lincoln Applications

The Gates OE Type Thermostat 34238 is built for precise coolant temperature control and a leak-free OEM-equivalent fit. It is a direct replacement engine coolant thermostat for select Ford Transit, F-150, Mustang, Expedition, Explorer, and Lincoln Navigator applications.

Gates OE Type Thermostat line focuses on OE-style fit and temperature control for service replacements where factory-style operation matters. This thermostat is set to start opening at 190 degrees and uses a bottom by-pass design for the listed applications.

Key Features

• OE Type thermostat for engine cooling system service
• Starts to open at 190°F / 88°C
• Bottom by-pass design
• Stainless steel and copper construction
• Jiggle pin weep hole included for air bleeding
• OE Performance comparison rating
• Gates part number 34238

Detailed Description

Built for temperature regulation in the cooling system, this thermostat helps maintain proper engine operating temperature by controlling coolant flow through the radiator circuit. The stainless steel and copper construction supports consistent operation, while the OE Type design is intended to match factory-style fitment in the listed Ford and Lincoln vehicles. If you are replacing a thermostat on a Ford F-150, Ford Mustang, Ford Transit, or Lincoln Navigator, Gates 34238 provides a direct service part option for the specified applications.

This part cross-references Continental 49238 for the same application.

What It Helps Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuation caused by a worn thermostat
• Coolant flow control issues in the cooling system
• Service replacement needs on Ford F-150, Ford Mustang, and Ford Transit models
• OE-style thermostat replacement for Lincoln Navigator and Ford Expedition applications

Installation Notes and Tips

• Verify the thermostat housing condition before installation, since this listing excludes the housing.
• Confirm the 190-degree temperature specification matches the vehicle application.
• Inspect the sealing surfaces and cooling system for debris or corrosion before assembly.
• Use the jiggle pin weep hole orientation recommended by the vehicle service procedure.
• Bleed air from the cooling system after installation to help restore normal coolant circulation.

Quality Assurance

Gates OE Type Thermostats are engineered for precise temperature control and OEM-equivalent fit. Part number 34238 is built to OE-style expectations for the listed Ford and Lincoln fitments, including 2011-2025 Ford Transit, 2011-2022 Ford F-150, 2015-2017 Ford Mustang, 2015-2022 Ford Expedition, 2020-2021 Ford Explorer, and 2016-2021 Lincoln Navigator applications.