Plastic base gasket for quarter window assembly. Porsche 911 - 90154349121
90154349121/1
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
Information
Plastic base gasket for quarter window assembly.
A precision-moulded plastic base gasket that sits between the quarter-window hinge/base and the body. It reproduces the OE profile to seal the mounting footprint, protect paint, and set the correct standoff so the glass and latch align properly.
Sold each, 2 required.
Fits:
Porsche 911/912 1965 - 1977
Diagram ref no 18
• Application: Rear quarter window assembly (pop-out/hinged type) – Porsche 911
• Side-agnostic; sold each (order two if renewing both sides)
Function:
• Seals the hinge/base to the body to prevent water and dust ingress
• Protects paintwork from abrasion and crush marks
• Helps maintain correct window alignment, closing pressure, and reduced wind noise
Over time, the original quarter window base gaskets can harden, flatten, or shrink due to age, UV exposure, and temperature changes. This can cause water leaks, wind noise, or rattles, and may even lead to paint scuffing around the hinge area.
Replace the gasket when:
• Performing glass or hinge installation, or during body/paint restoration
• The window shows misalignment, wind noise, or minor leakage
• The existing seal appears cracked, brittle, or misshapen
Replacing with a fresh gasket restores a tight seal, clean alignment, and factory-quality protection for your classic Porsche 911.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90154349121
The product you are viewing cross references to these numbers
A precision-moulded plastic base gasket that sits between the quarter-window hinge/base and the body. It reproduces the OE profile to seal the mounting footprint, protect paint, and set the correct standoff so the glass and latch align properly.
Sold each, 2 required.
Fits:
Porsche 911/912 1965 - 1977
Diagram ref no 18
• Application: Rear quarter window assembly (pop-out/hinged type) – Porsche 911
• Side-agnostic; sold each (order two if renewing both sides)
Function:
• Seals the hinge/base to the body to prevent water and dust ingress
• Protects paintwork from abrasion and crush marks
• Helps maintain correct window alignment, closing pressure, and reduced wind noise
Over time, the original quarter window base gaskets can harden, flatten, or shrink due to age, UV exposure, and temperature changes. This can cause water leaks, wind noise, or rattles, and may even lead to paint scuffing around the hinge area.
Replace the gasket when:
• Performing glass or hinge installation, or during body/paint restoration
• The window shows misalignment, wind noise, or minor leakage
• The existing seal appears cracked, brittle, or misshapen
Replacing with a fresh gasket restores a tight seal, clean alignment, and factory-quality protection for your classic Porsche 911.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90154349121
90154349121
The product you are viewing cross references to these numbers
Price: €3.77
In stock
Related products
Vehicle Group
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Information
Rear 1/4 Side Window Glass.
Fits:
Porsche 987.1 Cayman MKI 2006>>2008
Porsche 987.2 Cayman MKII 2009>>2012
POSTING GLASS & WINDSCREENS
Although we take great care in packaging glass, we cannot offer insurance to cover breakage.
Therefore, we advise customers that they purchase glass by mail order at their own risk.
Diagram Ref No 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98754311
The product you are viewing cross references to these numbers
Fits:
Porsche 987.1 Cayman MKI 2006>>2008
Porsche 987.2 Cayman MKII 2009>>2012
POSTING GLASS & WINDSCREENS
Although we take great care in packaging glass, we cannot offer insurance to cover breakage.
Therefore, we advise customers that they purchase glass by mail order at their own risk.
Diagram Ref No 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98754311
98754311105
98754311205
98754311100
98754311101
98754311102
98754311103
98754311104
98754311200
98754311201
98754311202
98754311203
98754311204
The product you are viewing cross references to these numbers
Prices from: €236.98