Motorad 7233-180 Engine Coolant Thermostat

Motorad Fail-Safe 180F Thermostat

The Motorad Fail-Safe 7233-180 engine coolant thermostat is built for vehicles that need stable coolant control and a direct OE-style replacement. It uses a copper case and wax compound for quick reaction to coolant temperature changes, with an offset design and air relief valve where applicable.

Compatible with select Jaguar XJ12, XJS, XJ6, XJ, and XJRS applications, plus Saab 900, Nissan Maxima, Nissan 720, Mazda RX-7, and Dodge D250/D350/W250/W350 models, this 180-degree thermostat is a practical choice for cooling system service. The 7233-180 is also cross-referenced to Four Seasons 73380 for the same application.

Key Features

• 180°F engine coolant thermostat for temperature control in the cooling system
• Copper case and wax compound for fast response to coolant temperature changes
• Manufactured to OEM specifications and processes
• OE supplier construction with OEM-quality materials and safety standards
• Offset design with air relief valve and OEM-style seals where applicable
• Sealing flange outside diameter: 2.12 in.
• Bypass diameter: 1.14 in.
• Bypass length: 1.23 in.
• Flange thickness: 0.068 in.

Detailed Description

Motorad Fail-Safe thermostats are engineered for cooling systems that demand consistent temperature regulation and a built-in fail-safe response. This 7233-180 thermostat is set to open at 180°F and is designed to lock open in overheating situations, allowing continuous coolant flow when the engine needs protection. It is a direct-fit style thermostat for applications including Jaguar XJ12, Jaguar XJS, Jaguar XJ6, Jaguar XJ, Jaguar XJRS, Saab 900, Mazda RX-7, Nissan Maxima, Nissan 720, and Dodge D250/D350/W250/W350 models.

The Fail-Safe line focuses on OE-style fit and thermal response, making the Motorad 7233-180 a solid replacement when servicing the thermostat housing or addressing temperature regulation concerns. This part number, 7233-180, is also listed under Four Seasons 73380 for cross-reference purposes.

What It Helps Solve

• Engine overheating caused by a thermostat that no longer opens correctly
• Temperature swings from delayed coolant flow regulation
• Cooling system service needs on OE-style thermostat applications
• Fail-safe protection concerns in high-demand driving conditions
• Replacement of a worn thermostat during cooling system maintenance

Installation Notes and Tips

Verify the thermostat housing dimensions, bypass size, and temperature rating before installation. This unit does not include a gasket or seal, and no installation tool is included. Clean the housing mating surfaces thoroughly and inspect the cooling system for contamination, restricted flow, or damaged seals before reassembly.

For fitment-specific service, confirm the application against the vehicle’s original thermostat specification. Fits 1971 Jaguar XJ, N/A; Fits 1972-1977 Jaguar XJ6, N/A; Fits 1973-1979 Jaguar XJ12, N/A; Fits 1976-1992 Jaguar XJS, N/A; Fits 1979-1982 Jaguar XJ6, N/A; Fits 1981 Nissan 720, N/A; Fits 1981-1992 Jaguar XJ12, N/A; Fits 1982 Nissan Maxima, N/A; Fits 1984-1986 Mazda RX-7, N/A; Fits 1989-1993 Dodge D250, N/A; Fits 1989-1993 Dodge D350, N/A; Fits 1989-1993 Dodge W250, N/A; Fits 1989-1993 Dodge W350, N/A; Fits 1993 Jaguar XJRS, N/A; Fits 1994 Jaguar XJS, N/A; Fits 1994-1995 Jaguar XJS, N/A; Fits 1994-1996 Jaguar XJ12, N/A; Fits 1994 Saab 900, N/A.

Quality Assurance

Motorad manufactures this thermostat with OEM-quality materials and safety standards as an OE supplier, using OEM specifications and processes for consistent fit and thermal performance.