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Motorad 620-180 Engine Coolant Thermostat
| Brand | Motorad 620-180 |
|---|---|
| Bypass Diameter | 1.09 in |
| Bypass Length | 1.58 in |
| Flange Thickness | 0.05 in |
| Gasket Or Seal Included | Yes |
| Gasket/Seal Material | Rubber |
| Gasket/Seal Material | Rubber |
| Height | 2.28 |
| Height Between Flanges | 1.6 |
| Installation Tool Included | No |
| Jiggle Pin Weep Hole | Yes |
| Number Of Seals | 1 |
| Seal Type | O-Ring |
| Sealing Flange Outside Diameter | 2.04 |
| Start to Open Temperature | 180 |
| Temperature | 180 Deg. F |
| Temperature (Degree) | 180 |
| Type | Standard |
| Product line | Standard |
| Fits | Mazda · 8 vehicles |
OE supplier quality. Made with OEM materials and processes to meet safety standards.
Rapid temperature response. Copper case and wax compound react quickly to coolant changes.
Air relief valve included. Offset design with OEM-style seals where applicable.
Cross-references Dorman - HELP 56208, Motorad 620-180 and 180-026 for the same application. See all 9.
Motorad 620-180 Engine Coolant Thermostat
The Motorad 620-180 is a standard engine coolant thermostat built for precise temperature control in demanding cooling systems. It is specified for the 2004-2011 Mazda RX-8 and uses OEM-style materials, seals, and operating geometry to support consistent coolant flow regulation at 180°F.
Key Features
- 180°F start-to-open temperature for controlled coolant circulation
- Copper case and wax compound for quick response to coolant temperature changes
- Offset design with air relief valve where applicable
- Includes an O-ring seal and rubber gasket/seal material
- Jiggle pin weep hole for air bleeding during service
- OEM specifications and processes used in manufacturing
- Sealing flange outside diameter: 2.04 in; height: 2.28 in
Product Details
Motorad Standard line thermostats are built as OE-supplier components with OEM-quality materials and safety standards. The 620-180 thermostat is engineered for the Mazda RX-8 cooling system and is designed to open at 180 degrees Fahrenheit, helping the engine reach and maintain the intended operating range. The copper case and wax compound support responsive temperature control, while the included seal and air-bleed features help simplify service and promote proper coolant system operation. This part cross-references Dorman - HELP 56208 for the same application.
What It Helps Address
- Engine running too cool or taking too long to reach operating temperature
- Temperature fluctuations caused by a worn thermostat
- Restricted coolant flow from a thermostat that no longer opens correctly
- Air trapped in the cooling system after thermostat service
- Cooling system performance concerns on a 2004-2011 Mazda RX-8
Installation Notes
Fits 2004-2011 Mazda RX-8, N/A. Confirm housing condition, seal seating, and coolant level before installation. Clean the mating surfaces thoroughly and verify the jiggle pin orientation and air relief path during assembly. The Motorad 620-180 is a direct-fit thermostat for the listed application and should be installed with the correct coolant service procedure for the vehicle.
Quality Assurance
Manufactured by an OE supplier using OEM-quality materials and processes, this thermostat is built to meet standard cooling-system service requirements. Motorad Standard parts are produced to support consistent fit and temperature control in the specified application.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
| 2010 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
| 2009 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
| 2008 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
| 2007 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
| 2006 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
| 2005 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
| 2004 | Mazda | RX-8 | 1.3L | R2 | N/A | 180F thermostat with seal.; Standard |
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