Is the Ancillary Hose Spring required?


As the title says, what's the purpose of the spring located in the largest ancillary hose? (comes from the block to the hard pipe behind the thermostat)

I've upgraded to a multi ply silicone hose (supplied from roose motorsport), which can hold well above any coolant pressure seen.

It's damn near impossible to get the hose in and out with it installed, and I'd rather chuck the thing entirely


Active Member
The spring is there to stop the hose from collapsing from the suction of the water pump I think.

A silicon hose is possibly stronger but I would fit the spring if you can.