turbo coolant return line

[hunker7]

Hi guys, does anyone know internal diameter of turbo coolant return line that connects to banjo fitting under water manifold?

[UrS4boy]

Hi guys, does anyone know internal diameter of turbo coolant return line that connects to banjo fitting under water manifold?

The Audi OE hose is 10mm ID and about 17.2mm OD. With the OE hose NLA, people on my side of the pond have been using a Gates Durion Hose Part #26239.

"Additionally, I picked up a section of the suggested Gates Durion Hose Part #26239 @ $8.29/ft In a pinch, the specs and price-point (my local FLAPS gave me ~2ft for the price of one!) make it seem to be an affordable FLAPS alternative.
Temperature Rating: -70 Deg. F to +400 Deg. F (-57 Deg. C to +204 Deg. C).
Working Pressure (psi): 60 psi
Inside Diameter: 3/8 Inch (9.525 mm)
Additionally as shown in the following pictures, the hose is reinforced and similarly built to the stock hose.UrS4boy has correctly indicated the temp specs *might* not be high enough so YMMV..." k2exoman

[hunker7]

Thanks for the information. Don't have that Gates hose available this side of the pond, but I have ordered a new hose with similar size.

[terrybullwon]

-6AN Will be fine if your going to use Aeroquip type fittings