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Facet 7.8354S Engine Coolant Thermostat
| Brand | Facet 7.8354S |
|---|---|
| Fits | Mazda · 39 vehicles |
Engine coolant thermostat for precise temperature control.
Engine Coolant Thermostat for Mazda Applications
Facet 7.8354S is an engine coolant thermostat for select Mazda Miata and Mazda Protege applications. It is a direct-fit cooling system service part for vehicles that need accurate coolant flow control and stable operating temperature.
- Engine coolant thermostat for cooling system temperature regulation
- Fits 2001-2005 Mazda Miata, N/A; gasket not provided
- Fits 1999-2000 Mazda Miata, N/A; gasket included: N
- Fits 1996-2001 Mazda Protege, N/A; gasket not provided
- Fits 1995 Mazda Protege, N/A; from 04/12/1995; gasket included: N
- Facet part number 7.8354S for fitment-based search and ordering
Product Details
This thermostat is used in the engine cooling circuit to open and close at the specified temperature range, helping the engine reach and maintain normal operating temperature. For Mazda Miata and Mazda Protege models listed above, Facet 7.8354S supports routine cooling system repair when the original thermostat is sticking, slow to respond, or no longer regulating coolant flow correctly. This part cross-references common aftermarket listings for the same application.
Common Repair Symptoms
- Engine runs hotter than normal
- Temperature gauge fluctuates during driving
- Slow warm-up after cold starts
- Coolant flow control issues from a worn thermostat
- Cooling system service on a Mazda Miata or Mazda Protege
Installation Notes
Verify the vehicle year and engine application before installation. Some listed fitments note that a gasket is not provided, and some applications note gasket status in the fitment data; inspect the housing and sealing surfaces before assembly. Drain coolant as needed, clean the mating surfaces, and follow the vehicle service procedure for thermostat orientation and coolant refill.
Quality Assurance
Facet cooling system components are selected for service replacement applications where accurate fitment matters. Confirm the part number 7.8354S against the vehicle listing before installation.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Mazda | Miata | LS | — | — | N/A | Gasket not provided. |
| 2005 | Mazda | Miata | Base | — | — | N/A | Gasket not provided. |
| 2005 | Mazda | Miata | Mazdaspeed | — | — | N/A | Gasket not provided. |
| 2004 | Mazda | Miata | Base | — | — | N/A | Gasket not provided. |
| 2004 | Mazda | Miata | LS | — | — | N/A | Gasket not provided. |
| 2004 | Mazda | Miata | Mazdaspeed | — | — | N/A | Gasket not provided. |
| 2003 | Mazda | Miata | Base | — | — | N/A | Gasket not provided. |
| 2003 | Mazda | Miata | LS | — | — | N/A | Gasket not provided. |
| 2003 | Mazda | Miata | SE | — | — | N/A | Gasket not provided. |
| 2003 | Mazda | Miata | Shinsen | — | — | N/A | Gasket not provided. |
| 2002 | Mazda | Miata | LS | — | — | N/A | Gasket not provided. |
| 2002 | Mazda | Miata | SE | — | — | N/A | Gasket not provided. |
| 2002 | Mazda | Miata | Base | — | — | N/A | Gasket not provided. |
| 2001 | Mazda | Miata | LS | — | — | N/A | Gasket not provided. |
| 2001 | Mazda | Miata | Base | — | — | N/A | Gasket not provided. |
| 2001 | Mazda | Miata | SE | — | — | N/A | Gasket not provided. |
| 2001 | Mazda | Protege | DX | — | — | N/A | Gasket not provided. |
| 2001 | Mazda | Protege | LX | 1.6L | L4 | N/A | Gasket not provided. |
| 2000 | Mazda | Miata | SE | — | — | N/A | Incl.Gasket; Gasket included: N |
| 2000 | Mazda | Miata | Base | — | — | N/A | Incl.Gasket; Gasket included: N |
| 2000 | Mazda | Miata | LS | — | — | N/A | Incl.Gasket; Gasket included: N |
| 2000 | Mazda | Protege | DX | — | — | N/A | Gasket not provided. |
| 2000 | Mazda | Protege | LX | — | — | N/A | Gasket not provided. |
| 1999 | Mazda | Miata | 10th Anniversary | — | — | N/A | Incl.Gasket; Gasket included: N |
| 1999 | Mazda | Miata | Base | — | — | N/A | Incl.Gasket; Gasket included: N |
| 1999 | Mazda | Protege | DX | — | — | N/A | Gasket not provided. |
| 1999 | Mazda | Protege | LX | — | — | N/A | Gasket not provided. |
| 1998 | Mazda | Protege | ES | — | — | N/A | Gasket not provided. |
| 1998 | Mazda | Protege | DX | — | — | N/A | Gasket not provided. |
| 1998 | Mazda | Protege | LX | — | — | N/A | Gasket not provided. |
| 1997 | Mazda | Protege | DX | — | — | N/A | Gasket not provided. |
| 1997 | Mazda | Protege | ES | — | — | N/A | Gasket not provided. |
| 1997 | Mazda | Protege | LX | — | — | N/A | Gasket not provided. |
| 1996 | Mazda | Protege | ES | — | — | N/A | Gasket not provided. |
| 1996 | Mazda | Protege | DX | — | — | N/A | Gasket not provided. |
| 1996 | Mazda | Protege | LX | — | — | N/A | Gasket not provided. |
| 1995 | Mazda | Protege | DX | — | — | N/A | From 04/12/1995; Gasket included: N |
| 1995 | Mazda | Protege | ES | — | — | N/A | From 04/12/1995; Gasket included: N |
| 1995 | Mazda | Protege | LX | — | — | N/A | From 04/12/1995; Gasket included: N |
| No rows match your filter. | |||||||