Motorad 1121-160 Engine Coolant Thermostat

Motorad 1121-160 Thermostat Overview

Motorad Standard part number 1121-160 is an engine coolant thermostat built for OE-style cooling system service. It is a direct-fit thermostat for select Ford Super Duty applications, including Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford E-350 Super Duty coverage.

Key Features

• OEM design and grade type for factory-style fit and function
• Copper case with stainless steel construction
• Wax compound for quick response to coolant temperature changes
• Starts to open at 160°F (71.11°C)
• O-ring seal included; gasket or seal required
• Jiggle pin weep hole for air bleeding during service
• Standard, non-electric, MAP-controlled design

Product Details

The Motorad Standard line focuses on OE-spec thermostat and housing components for routine cooling system repair. Part number 1121-160 uses OEM specifications and manufacturing processes, with a copper case and wax element that reacts promptly as coolant temperature changes. This thermostat is built for demanding cooling system conditions and is suited to Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford E-350 Super Duty applications that call for a 160-degree thermostat.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant flow control from a sticking thermostat
• Temperature fluctuation caused by an aging wax element
• Cooling system service needs on Ford Super Duty trucks and vans

Installation Notes

Confirm the thermostat housing and seal condition before installation. Use the correct O-ring seal and verify the 160°F opening specification matches the vehicle’s cooling system requirements. Bleed trapped air from the system after service, using the jiggle pin weep hole as part of the fill and purge process.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and safety standards. Built to OEM specifications for consistent thermostat operation in automotive cooling systems.