A spring-loaded one-way valve installed in the coolant hose that prevents backflow, ensuring correct coolant circulation within components such as heater cores or transmission coolers. Made from durable plastic and rubber.
| Brand |
Model |
Year |
| Mercedes-Benz |
S 500 |
2014, 2015, 2016, 2017 |
| Mercedes-Benz |
S 500 4MATIC |
2014, 2015, 2016, 2017 |
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