The EVF filling station in Kirk Michael will close for five weeks from tomorrow night.
From 9pm in Tuesday it will shut for redevelopment, with the company saying - once completed - will be the second largest store it has on Island and include a new rear entrance and additional parking.
Officials added in the announcement it remains committed to redeveloping the location to keep a full convenience store offering 'at a time when many rural filling stations in the UK are closing'.
The store and forecourt will both shut during this time - with the company saying it's 'extremely confident' the improvements will be worth the wait.