Technical Service Bulletin Modified Frame for Windshield

Subject: Modified Windshield Frame Models 911 Carrera/911 Turbo 1989

Bulletin Number: 89 – 02

Model Year 1989

The windshield frame pinch weld lip for the windshield seal was increased from approximately 10mm to approximately 15mm. This change required a new type windshield and windshield frame seal.

From production date (approx.): October 13, 1988

VIN (approx.)                     91_KS12 0509 – Carrera Coupe

                                                91_KS16 0462 – Carrera Targa

                                                91_KS17 0584 – Carrera Convertible

                                                93_KS05 0265 – Turbo Coupe

                                                93_KS06 0072 – Turbo Targa

                                                93_KS07 0275 – Turbo Convertible


Introduction date and VIN’s are approximate. Measure pinch weld lip to determine the correct windshield and windshield seal application.

Approx. 15mm pinch weld lip:

Windshield Tinted,

Upper Part Darker PN:   964.541.011.01

Windshield Tinted PN:   964.541.011.00

Windshield Seal PN:        964.541.225.00

Approx. 10mm pinch weld lip:

Refer to parts catalog for windshield and windshield seal part numbers.

Important Notice: Technical Bulletins are intended for use by professional technicians, not a “Do-it-yourselfer.” They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Special tools may be required to perform certain operations identified in these bulletins. Use tools and procedures other than those recommended may be detrimental to the safe operation of your vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to a do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your Porsche Dealer for information on whether your vehicle may benefit from the information. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify correct part numbers.

home page:

Want More?

Get the coolest tips and tricks today

Subscribe to our email list and get regular notifications of new videos and blog articles on how to repair your own car.