Genuine Rayburn 308K Oil Fired Cooker Spares & Replacement Parts available to order online from Rangemoors. The 308K is a boiler version of the 300K and a larger version of the 208K / OF7 Oil Fired Cookers. Select the part you require from the list below, including Rayburn 308K Burner Shells, Burner Base, Wick Sets, Flue Shroud, Burner Baffle & more. Can’t find the Rayburn 308K spare part you’re looking for? Call / Email us for any parts not listed.