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Your Vehicle  //  Porsche  //  Cayenne 9PA (955) 2003-2006  //  955 Cayenne S 4.5L V8 2003-06
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91179956580/1
Product Information
Product Information

OE Match front roll bar rubber seal for Porsche 911 and 964 Targa / Cabrio applications. This gasket belongs to the windscreen-frame assembly; the supplied 1987–89 911 diagram specifies that reworking is necessary.

Fits:

  • Porsche 911 1986-89
  • Porsche 964 1989-94


Diagram Ref No 7


What This Product Does
The rubber gasket forms part of the roof's sealing interface at the windscreen frame. Correct contact between the seal and adjoining surfaces helps limit rainwater entry and draughts.


Functions

  • Seals the adjoining roof and windscreen-frame surfaces.
  • Helps restrict moisture and unwanted airflow at the joint.
  • Replaces deteriorated rubber during roof refurbishment.


Technical Details

  • Part reference: 91179956580.
  • Material: rubber.
  • Position: Front.
  • 911 diagram application: Targa / Cabrio 1987–89; gasket requires reworking.
  • 964 diagram application: Targa / Cabrio 1989–94.


Symptoms of Fault

  • Splits, brittleness or flattened areas in the rubber.
  • Rainwater entering near the roof joint.
  • Whistling or draughts around the sealing interface.
  • Moisture staining on nearby interior trim.


Why Replacement Matters
Rubber that has hardened or lost its shape may no longer contact the adjoining surfaces evenly. Renewing a damaged gasket can help address leakage at this joint, but roof alignment and neighbouring seals should also be inspected.


FAQs

  • Is adjustment needed?
    The 1987–89 911 diagram explicitly requires reworking. Assess the fit before completing installation.
  • Will replacement alone resolve every leak?
    No. Roof positioning, window alignment and drainage can also contribute to moisture entry.
  • What should be checked during fitting?
    Inspect the contact surfaces and neighbouring rubber, and avoid stretching the seal into position.


Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91179956580
91179956580

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