Motorad 7427-180 Fail-Safe Engine Coolant Thermostat with Seal 180°F

The Motorad 7427-180 Fail-Safe Thermostat is a premium engine coolant thermostat engineered to protect your engine under both normal and extreme operating conditions. With a start-to-open temperature of 180°F (82.2°C), this thermostat precisely regulates coolant flow to maintain optimal engine operating temperature — improving fuel efficiency, reducing emissions, and extending engine life.

What sets the Fail-Safe series apart from conventional thermostats is its patented two-stage Fail-Safe design. Standard thermostats can lock in the closed position when they fail, cutting off coolant flow and risking severe engine damage. The Motorad Fail-Safe thermostat is engineered to automatically lock in the open position during an overheating event, keeping coolant circulating freely and helping prevent costly engine repairs.

Key Features:

• 180°F start-to-open temperature for precise engine temperature regulation
• Patented Fail-Safe technology — locks open (not closed) in the event of thermostat failure
• High-grade stainless steel and copper construction for durability and rapid thermal response
• Copper case and wax compound ensures fast, accurate response to coolant temperature changes
• Includes OEM-style seal — gasket/seal included for a leak-free installation
• Offset design and air relief valve included where applicable for proper coolant circulation
• 100% tested and calibrated to meet or exceed OEM start-to-open and maximum opening temperature standards
• Manufactured by an OE supplier using OEM-grade materials, specifications, and processes
• Located on the water inlet for straightforward installation

Motorad is a trusted OE supplier to many of the world's leading automakers and Tier-1 suppliers. The 7427-180 is a direct-fit replacement designed to restore factory-level cooling system performance. Includes one OEM-style rubber seal. Backed by a 1-year manufacturer warranty against defects in material and workmanship.