Westfalia louvered window seal kit in Grey, like it should be from the factory. This is the best quality kit you will find anywhere on the market, you can find cheaper, but not better. Manufactured by Wolfsburg West in the USA. Fits all Baywindow westys from 68-79.
www.alanhschofield.com
It's a pain in the ass to do, and a high percentage you'll break a piece of glass. Your fingers will ache for days after.
And the screws are two different lengths, don't mix them up....
If the louvres are loose and won't shut tightly, there's a chance the gearbox is worn.
Jeffrey at Bus-ok.de does replacement parts.
Type2 bay louvered window parts: Type2 Bay Jalousie window mechanism right T2 - Type2 bay louvered window protectors set - Louvre Window Knob (Beige) for We
www.bus-ok.de