do not press the back button…
-
Engine Parts
-
- Engine Rebuild Parts Intermediate shaft (IMS) Oil System Parts Fuel System Parts Gaskets & Sets Belts / Tensioners / Rollers Chains & Tensioners Timing covers and gaskets Engine Bearings / Shells Engine Valves / Guides / Springs Rocker Arms & Tappets Engine Bolts / Studs Engine Mounts Piston Rings Engine Cylinders / Liners / Pistons Connecting Rod Cylinder Head / Camshaft Carrier Camshaft covers / Gaskets Camshafts Camshaft gears / sprockets and fixings Crankcase Parts Crankshaft & Parts Engine Tinware All Categories
-
Brakes
-
- Brakes Brake Pads & Disc Package Brake Disc Standard Brake Pads Standard Brembo Standard brakes Brembo Racing brakes TEXTAR Brakes PAGID Racing Brakes EBC Brakes Brake Pad Anti-vibration shims Caliper Bolts / Disc Screws Pin Kit and Guide Plates Performance Brake Hoses Standard Brake Hoses Caliper and Brake Lines Brake Calipers Brake Caliper Upgrades Handbrake Shoes Handbrake Cables Brake Disc Cover Plates Caliper Seals |Pistons Brake Servo | Booster Brake Master Cylinder All Categories
-
-
Suspension & Steering
-
Transmission
-
- Gearbox / Transmission Clutch Kits Clutch Friction Plate Clutch Pressure Plate Clutch Release Bearings Clutch Cables & Parts Clutch Guide Tube Clutch Forks & Levers Clutch Bolts Gearbox Parts Driveshafts & Parts Gasket Sets / Gaskets / Seals / Lock Nuts Gearbox Mounts Gearshift Control Parts Flywheel / Torque CV Joints Kits CV Boots and Kits Cardan Shaft / Prop Shaft Gearbox / Differential Oil Gearbox Sump / Oil Pan Rear Differential Motor Sport Parts
-
-
Cooling & Heating
-
- Heating / Air Conditioning Fans & cowlings Heater flaps Heater cables Vents / Grilles Climate Control Temperature Sensors / Switches
-
-
Electrical & Lighting
-
- Electrical & Relays Fuel Pumps Brake Light Switch Reverse Light Switch Headlamp Switch Window Mechanism Wiper Mechanism Electric Horn Ignition Switch Indicator / Wiper Stalk Switch Relays / Fuses Washer pumps / bottles / jets Alarms / Security / Central Locking Electronic Control Units Dashboard / Console Parts & Switches Tracker Connector housing Wiring harness
-
-
Body & Exhaust
-
- Chassis / Bodywork Restoration Chassis / Repair Panels Bonnets / Locks & Latches Boots / Rear Lid / Locks and Latches Rear lid / Tailgate Bumpers Front Bumpers Rear Door Handles | Locks | Keys Door Panels | Hinges | Striker Plates Window Lifters | Motors Wings Front & Parts Wings Rear & Parts Side Sill Panels Exterior Chassis Mouldings Mirrors & Parts Stone Chip Foils / Stickers Front Wiper Arms & Blades Wheel Arch Liners & Covers Roof - Cabrio / Targa / Coupe / Speedster Sound Proofing Front screen Rear screen Front side glass All Categories
-
-
Lubricants & Fluids
-
- Service Parts Oil Filters Air Filters Belts All Types Spark Plugs IRIDIUM POWER Spark Plugs Ignition Coils Front Wiper Arms & Blades Rear Wiper Arms & Blades Gearbox Service Parts Porsche Classic Motor oil Engine Oil & Lubricants - Mobil Engine Oil & Lubricants - Total Engine Oil & Lubricants - Castrol Engine Oil & Lubricants - Motul Engine Oil & Lubricants - Millers Oils NanoDrive Engine Oil & Lubricants - Millers Oils Fuel Additives Garage PPE
-
-
All Parts
-
- Parts Accessories Chassis / Bodywork Brakes Clothing & Gifts Electrical & Relays Engine Cooling Engine Electrical Engine Rebuild Parts Engine Tuning Exhausts Exterior Styling / Spoilers Gearbox / Transmission Heating / Air Conditioning Hydraulics Interior & Accessories Incar / Multimedia Lighting Mats & Carpets Motorsport and Off-Road Parts for Other Cars Pedal Cluster Rubber Seals All Categories
-
- Back to main website
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Inner Door Membrane Seal Porsche 987/ 997 ❭ 99753790
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Fits:
For Cars Upto >>2005
Porsche 987 Boxster
Porsche 997 Carrera / Turbo
Porsche 987 Cayman
Important Notice: Please Read Before Purchasing
This product is supplied by Porsche with adhesive already applied. However, due to the packaging and handling process, you may need to apply additional adhesive to the membrane. This is how they are provided directly from the factory, and unfortunately, it’s beyond our control.Please note that these items are sold as-is and cannot be refunded. Be prepared to add extra adhesive if necessary for proper installation. Thank you for your understanding.
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Please Select left or right below
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99753790
The product you are viewing cross references to these numbers
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Restore smooth and reliable window operation with this OE Match Window Lifting Rail. Designed for compatible vehicle applications, the lifting rail forms part of the door window regulator mechanism and helps support, guide, and control the movement of the window glass as it is raised or lowered.
Fits:
- Porsche 356B 1959-63 (COUPE)
- Porsche 356C 1963-65 (COUPE)
Diagram Ref No 23
The window lifting mechanism relies on correctly aligned rails, guides, regulator components, and mounting points to move the glass smoothly through the door frame. A worn, bent, corroded, or damaged lifting rail can interfere with this movement, causing the window to become stiff, uneven, noisy, or difficult to operate.
What This Product Does:
- Forms part of the window lifting and regulator mechanism.
- Helps support the window glass during operation.
- Guides the glass as the window is raised and lowered.
- Helps maintain correct window alignment within the door.
- Supports smooth and controlled window movement.
- Helps prevent excessive glass movement or tilting.
- Works with the associated regulator, guides, and mounting components.
- Helps the window close correctly against its seals.
- Replaces a worn, bent, corroded, or damaged lifting rail.
- Provides an OE-style replacement for compatible vehicle applications.
Symptoms Of Wear Or Failure:
- Window glass tilting while being raised or lowered.
- Uneven or jerky window movement.
- Window becoming difficult to raise or lower.
- Excessive resistance when operating the window.
- Scraping, grinding, clicking, or rattling noises inside the door.
- Window glass dropping or becoming loose within the mechanism.
- Window failing to close fully.
- Poor alignment between the glass and window seals.
- Excessive movement of the glass when partially open.
- Visible corrosion, bending, distortion, or damage to the lifting rail.
- Damage discovered while repairing the window regulator mechanism.
Why Replacement Matters:
- The lifting rail plays an important role in keeping the window glass correctly supported and aligned. If the rail becomes bent, worn, corroded, or damaged, the glass may no longer travel through the door smoothly.
- Continued operation with a faulty rail can place additional strain on the window regulator and associated components. Increased resistance or misalignment may accelerate regulator wear and can potentially cause further damage to guides, rollers, cables, mounting points, or the glass itself.
- Incorrect window alignment can also prevent the glass from sealing properly when closed. This may contribute to increased wind noise, water ingress, rattling, or difficulty securing the vehicle.
- Replacing a worn or damaged component with the correct OE Match Window Lifting Rail helps restore smooth window movement, correct glass alignment, reliable closure, and dependable operation of the window lifting mechanism.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64454204
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356A T2 356B 356C Cabriolet
Click 'Zoom in' for large parts diagram.
Diagram ref no 27
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64454204
The product you are viewing cross references to these numbers
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed