Genuine, new, Volkswagen O-RING SEAL  - Used on the PETROL Caddy MK1 pickups Thermostat unit, as the main O-ring seal between the Thermostat unit and the engine block, see ' 5A ' on the diagram.  Used on many other models across the range too, please confirm compatibility prior to ordering.UK STOCK - 24 TRACKED SHIPPING FREE OF CHARGE *UK customers - price includes VAT at current rate*