240 HVAC tubing source?

[DD Ranch]

The vacuum tube from the manifold back through the firewall to the heater box that controls the vents, has somehow shrunk on my 91 240. So I think it best I replace the whole length.

Local Hose and Hydraulics don't have tubing that small. Anyone know of a source or even the actual internal diameter. I know the ext dia is 5mm.

Thanks.

 

[bgpzfm142]

That hose is p/n 943999.

OD is 6.5mm
ID is 2.5mm

Volvopartswebstore and some others have it listed as available.

 

[tjanson]

Is this the plastic tube/hose? Belmetric has a few sizes of small polyamid tube, M2x4 and M3x5. One of those might work if you don't want to use the Volvo PN.
https://belmetric.com/m3x5-black-polyamid-hard-plastic-rhpoly3-3011-0305/