Porsche 1972 911 Workshop Manual page 630

Beginning with models, all Coupe vehicles are furnished with rubber ridge fillers which are glued
1914
to the front and rear part of the window frame to reduce wind noise.
Make sure that the ridge fillers are glued into place with waterproof glue. such as the BOSTIK-
CYANDIT
202.
I N S T A L L I N G R I D G E FILLERS