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Vemo V15-99-2028 Engine Coolant Thermostat
| Brand | Vemo V15-99-2028 |
|---|---|
| Height [mm] | 100 |
| Housing Type | with housing |
| Length [mm] | 98 |
| Opening Temperature [°C] | 80 |
| Packaging Depth [cm] | 9 |
| Packaging height [cm] | 9,2 |
| Packaging width [cm] | 4,9 |
| Weight [kg] | 0.061 |
| Width [mm] | 73 |
| Product line | VEMO |
| Fits | Audi · 12 vehicles |
Complete housing assembly. Includes the thermostat housing for a simpler replacement.
80°C opening temperature. Helps regulate coolant flow at the specified temperature.
Engine coolant thermostat. Controls coolant circulation to support proper engine temperature.
Cross-references 4E0 121 113, 4E0121113 and 191980 for the same application. See all 8.
Engine Coolant Thermostat for Audi V8 Applications
The Vemo V15-99-2028 is an engine coolant thermostat with housing for select Audi performance sedans and luxury models. It opens at 80°C and is built to match the cooling system requirements of the Audi S6, Audi A8 Quattro, and Audi S8.
VEMO product line parts are developed as OE-style replacement components for European vehicle cooling systems, with fitment and construction focused on direct application matching. The V15-99-2028 follows that approach with a housing-style thermostat assembly for the listed Audi platforms.
Key Features
- Engine coolant thermostat with housing
- Opening temperature: 80°C
- Dimensions: 100 mm height, 98 mm length, 73 mm width
- Compact packaging size for service inventory and parts identification
- Direct-fit application for select Audi cooling system repairs
Detailed Description
Vemo V15-99-2028 is an aftermarket engine coolant thermostat assembly designed for vehicles that use an 80-degree Celsius thermostat with integrated housing. It is listed for 2007-2011 Audi S6, 2007-2010 Audi A8 Quattro, and 2007-2009 Audi S8. This part number, V15-99-2028, also cross-references OE-style application references such as 4E0121113 for the same cooling system use.
For Audi S6, Audi A8 Quattro, and Audi S8 owners addressing temperature regulation concerns, this thermostat helps restore proper coolant flow control within the engine cooling circuit. The housing-type design supports replacement of the thermostat assembly as specified for the application.
What It Is Used For
- Replacing a thermostat that is stuck open or stuck closed
- Correcting engine temperature that runs too cool or too hot
- Addressing coolant flow control issues in the cooling system
- Restoring proper warm-up behavior after thermostat failure
- Servicing Audi cooling system components on S6, A8 Quattro, and S8 models
Installation Notes and Tips
Verify the OE number and engine application before installation. Confirm that the replacement thermostat matches the 80°C opening specification and housing style used on the vehicle. Inspect the mating surfaces, coolant passages, and related seals during service, and refill the cooling system with the correct coolant after installation.
Fits 2007-2011 Audi S6, N/A. Fits 2007-2010 Audi A8 Quattro, N/A. Fits 2007-2009 Audi S8, N/A.
Quality Assurance
Vemo parts are positioned as OE-style replacement components for European vehicle applications, with attention to fitment and cooling-system specification matching. Part number V15-99-2028 is built for the listed Audi applications and thermostat temperature range.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Audi | S6 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2010 | Audi | A8 Quattro | 4.2L | V8 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2010 | Audi | S6 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2009 | Audi | A8 Quattro | 4.2L | V8 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2009 | Audi | S6 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2009 | Audi | S8 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2008 | Audi | A8 Quattro | 4.2L | V8 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2008 | Audi | S6 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2008 | Audi | S8 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2007 | Audi | A8 Quattro | 4.2L | V8 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2007 | Audi | S6 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
| 2007 | Audi | S8 | 5.2L | V10 | N/A | Aftermarket engine coolant thermostat with gasket, temperature range of 80 degrees Celsius, Expert Kits +, OE No. 4E0121113.; VEMO |
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