The hoses are available ready-cut from parts dealers. However, you can cut them to size yourself from a hose. The length depends on the chassis number; longer hoses were introduced at the beginning of the 1969 model year. It is not a mistake to choose slightly longer hoses, then they will sit even better on the nozzles.
Properties: Special water-repellent paper inside and out. Aluminium middle layer.
Temperature resistance: -40 to + 25 °C
Inner diameter 38 mm; 1 ½ inch
Length of inner hoses
Up to chassis ch -28.345: 2 x 250 mm
From chassis ch 28.346-: 2 x 300 mm
Length of outer hoses
Up to chassis ch -28.345: 2 x 470 mm
From chassis ch 28.346-: 2 x 525 mm
Over the years, the paper hoses can become brittle or if the hoses are frequently loosened when working under the dashboard. It is then better to replace them with another spiral hose. For example:
Flexadux Silikon-Spiralschlauch P 4 SIL 1
Temperature resistance -70 to +250 °C
Nominal width 38 mm, 1 ½ inch
Bending radius 12 mm
Weight 170 g/m.
Single length 4 m