View Full Version : Diameter Hose for Windshield washer

04-23-2018, 12:36 AM
Hello again. Anyone know the correct sized hose to replace the windshield washer lines that are on the wiper arms? Insight is much appreciated.

Patrick of M
04-23-2018, 11:46 AM
There are lots in autoparts store that have the thin line in them. Some stores may have the line bulk, the fittings are stretch fit so as long as you have smaller line it should work.

04-23-2018, 03:55 PM
IIRC what you want is 3/32" or 1/8" ID vacuum hose. Thin wall, stretchy. The braided wall or pressure line will be too stiff and fat. If you have no luck at a chain store, I had great luck at the local Mercedes and BMW dealer. I got new fittings (which get brittle with age, well worth getting new ones, and spares!) and the hose was correct, but it came off a roll. It wasn't that expensive.

04-24-2018, 04:28 AM
I haven't specifically checked, but most Euro cars use 3.5mm or 1/8" line. I usually coat with Aerospace 303 on the outside of rubber/plastic lines before assembly. My hoses are still original. btw, I religiously use Rain-x washer fluid and wiper blades.