Why not find the Potterton part you are looking for by using our search by boiler model facility, all you need to do is find the model of boiler you require then click into it and we will provide you with a list of the fastest moving spare parts for that boiler. e.g. you require a printed circuit board for a potterton suprima 50 boiler. Click on search By Boiler Model, Click On Suprima Range, Click on Suprima 50 boiler and scroll down the page until you find the Printed Circuit Board. Click into the part and add it to your basket and checkout, its that easy.