A brand new old stock water hose for a classic Citroen DS, which goes from the back of the water pump to under the inlet manifold. The part no. is 5451490, which cross references with DX 235140A. This is a Citroen original new old stock pipe, so best quality and fit. I have three of them (select quantity required). They fit the carburettor models, not the EFI cars.