Motorad 655-188 Engine Coolant Thermostat

Engine Coolant Thermostat for Ford and Lincoln

Motorad Standard 655-188 is an engine coolant thermostat built for OE-style temperature control in demanding cooling systems. It opens at 187 degrees F and uses a copper case with wax compound construction for quick response to coolant temperature changes.

Compatible With Ford F-150, Ford Transit, Ford Edge, Ford Explorer, Ford Mustang, Lincoln Aviator, Lincoln Nautilus, and other listed applications, this thermostat is a direct-fit cooling system service part for a wide range of gas-engine vehicles.

Key Features

• Motorad Standard part number 655-188
• 187 degree F opening temperature
• Copper case and wax compound for responsive temperature regulation
• Manufactured to OEM specifications and processes
• Offset design with air relief valve included where applicable
• OEM-style seals included where applicable
• Sealing flange outside diameter: 2.39 in
• Bypass diameter: 1.38 in
• Bypass length: 1.58 in
• Flange thickness: 0.05 in
• No gasket or seal included
• No jiggle pin weep hole
• No installation tool included

Product Details

This Motorad thermostat is engineered for Ford and Lincoln cooling systems that require stable coolant flow control at 187 degrees F. The copper case and wax element help the thermostat react quickly as coolant temperature changes, supporting consistent engine operating temperature in applications such as the Ford F-150, Ford Transit-150, Ford Transit-250, Ford Transit-350, Ford Edge, Ford Explorer, Ford Mustang, Lincoln Aviator, Lincoln Nautilus, and Lincoln Navigator. This part number 655-188 also cross-references Continental 49229 for the same application.

Common Cooling Issues It Can Address

• Engine running cooler or warmer than specified
• Delayed coolant flow regulation after cold start
• Temperature fluctuation during stop-and-go driving
• Cooling system service on Ford F-150, Ford Transit, or Ford Edge models
• Replacement of a worn thermostat during radiator or housing repair

Installation Notes

Verify the 187 degree F specification and compare the flange, bypass, and sealing dimensions before installation. This thermostat does not include a gasket or seal, so use the correct sealing components for the application where required. Confirm the vehicle’s exact year, engine, and cooling system configuration against the listed fitment before service.

Quality Assurance

Motorad manufactures this Standard thermostat using OEM-quality materials and OE-supplier processes to meet factory-style safety and performance expectations. The design is built for demanding automotive cooling systems and follows OEM specifications for fit and function.

• Fits 2023-2026 Ford Ranger, N/A
• Fits 2021-2025 Ford Bronco, N/A
• Fits 2023-2025 Ford Transit-150, N/A
• Fits 2023-2025 Ford Transit-250, N/A
• Fits 2023-2025 Ford Transit-350, N/A
• Fits 2023-2025 Ford Transit-350 HD, N/A
• Fits 2021-2024 Ford Edge, N/A
• Fits 2023-2024 Ford F-150, N/A
• Fits 2021-2023 Ford Explorer, N/A
• Fits 2018-2023 Ford Mustang, N/A
• Fits 2020-2023 Lincoln Aviator, N/A
• Fits 2020-2023 Lincoln Nautilus, N/A
• Fits 2020-2022 Ford Escape, N/A
• Fits 2019-2022 Ford Expedition, N/A
• Fits 2011-2022 Ford F-150, N/A
• Fits 2020-2022 Ford Transit, N/A
• Fits 2015 Ford Transit, N/A
• Fits 2015-2022 Ford Transit-150, N/A
• Fits 2015-2022 Ford Transit-250, N/A
• Fits 2015-2022 Ford Transit-350, N/A
• Fits 2015-2022 Ford Transit-350 HD, N/A
• Fits 2021-2022 Lincoln Corsair, N/A
• Fits 2019-2022 Lincoln Navigator, N/A
• Fits 2015-2020 Ford Edge, N/A
• Fits 2020 Ford Explorer, N/A
• Fits 2020 Ford Fusion, N/A
• Fits 2013-2016 Ford Fusion, N/A
• Fits 2019-2020 Ford SSV Plug-In Hybrid, N/A
• Fits 2020 Lincoln Continental, N/A
• Fits 2017-2020 Lincoln MKZ, N/A
• Fits 2017-2019 Ford Fusion, N/A
• Fits 2017-2019 Lincoln Continental, N/A
• Fits 2019 Lincoln Nautilus, N/A
• Fits 2013-2018 Ford C-Max, N/A
• Fits 2018 Ford Expedition, N/A
• Fits 2015-2016 Ford Expedition, N/A
• Fits 2016-2018 Lincoln MKX, N/A
• Fits 2018 Lincoln Navigator, N/A
• Fits 2015-2016 Lincoln Navigator, N/A
• Fits 2017 Ford Expedition, N/A
• Fits 2011-2017 Ford Mustang, N/A
• Fits 2017 Lincoln Navigator, N/A
• Fits 2013-2016 Lincoln MKZ, N/A
• Fits 2011-2014 Lincoln Mark LT, N/A
• Fits 1994 Ford F-350, N/A