This is a very common replacement seal on the 911. This is the seal that runs across the top of the windshield, and also down the sides of the windshield frame. It is a one-piece seal that often breaks in to three pieces at the corners of the windshield.
901-565-099-40
Targa Windshield Frame Seal, 911/912 (1967-69), Each Brand: Genuine Porsche
No Longer Available
911-565-090-47-M260
Targa Windshield Frame Seal, 911/912 (1970-73), Each Brand: OEM [Photo]