Water Pump hose dimensions? Volvo 2030, 2003, 3 cylinder

[nevis768]

I've got a leak in this pipe where it joins water pump, also it looks like there has been some previous repair to the pipe as there's some red insulation tape there. Anybody know what dimension/type of pipe to order. I had to leave the boat some distance from house.It's all been working fine last few months since I got the boat, but now leaks and sprays onto alternator.

 

[Ammonite]

19mm ID for the MD2030 raw water pump. A lot of people use this
Clear Water Intake Hose 19mm (Per Metre)

Personally I prefer this sort of thing
Fire Retardant Water Intake Hose 19mm (Per Metre)

 

[nevis768]

Thanks for that, I will try and get the fire retardant one too.