I bought the tool on eBay for around €30 delivered. Excellent quality. Makes life very handy. But then I do have 3 cars that require it to change the water pump. M44, M50, M52.

I have to change the gasket on the timing chain cover on one of my M43's so I'll be on the lookout for the special tool that allows me to loosen the crank pulley.

I believe there's a way of doing it with a trolley jack and leverage but I'd rather get the tool as I'll probably have to do it to the other M43 during some part of it's life!!