ERR4686 - Filler Plug – Plastic

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Filler Plug sealing the fill and bleed point of the engine cooling system, fitted to the thermostat housing and the radiator. This plastic plug closes the top-up and bleed port and maintains cooling system integrity under operating pressure on Tdi and V8 applications. It is sealed by O-ring ESR4685, which should be renewed each time the plug is removed. Show more