Driveshaft Flange

Joint flange. Sold each.



Fits:
For cars with 6-speed manual transmission
Porsche 987.1 Boxster 2005-08
Porsche 987C.1 Cayman 2005-08

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

Related reference numbers
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98733220900

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Round Seal For Flanged Shaft, (Tiptronic Transmission).
The Porsche Round Seal for Flanged Shaft is a genuine OEM component engineered for vehicles equipped with the Tiptronic transmission. Positioned at the flanged/intermediate shaft housing, this seal prevents automatic transmission fluid (ATF) from leaking while keeping dirt and moisture from entering the transmission assembly.

Fits:

• Porsche Boxster 986 2.7L 1999-00
• Porsche Boxster S 986 3.2L 1999-00
• Porsche Boxster 987 2.7L 2005 -08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01
• Porsche 996 C2 3.6L 09/01-2005
• Porsche 996 C4 3.6L 09/01-2005
• Porsche 996 C4S 3.6L 09/01-2005

Cars With Option Codes:
249 - Tiptronic Transmission

What This Product Does:

• It seals the interface between the intermediate / flanged shaft and the transmission housing, preventing fluid (transmission oil / ATF) from leaking out.
  
• Maintains the internal fluid pressure and lubrication inside the Tiptronic transmission / differential system.
  
• Prevents external contaminants (dirt, water) from entering the transmission via that junction.
• Helps ensure the correct fluid environment, which is critical for gears, bearings and internal transmission components to remain lubricated and cool.

Symptoms Of A Worn / Failed Seal:

• Transmission fluid leaks (ATF / transaxle oil) around the area of the intermediate shaft or housing joint.
  
• Low transmission / transaxle fluid levels over time.
  
• Whining, gear noise or increased operating temperature if lubrication is compromised.
  
• Slipping, harsh shifts, or degraded Tiptronic performance when fluid levels or pressure are affected.
  
• Oil staining or wetness on the underside of the car or near the transmission.
  
• Possibly visible damage to the seal (cracks, deformations) or misalignment in the shaft / flange area.

Why Replacement Matters:

• Ensures fluid integrity and pressure inside the transmission—without a proper seal the system can lose fluid or allow contamination.
  
• Protects internal transmission components (gears, bearings, clutches) from insufficient lubrication or contamination.
  
• Prevents costly damage from running low on fluid or letting debris in.
  
• Avoids slipping, erratic shifting, or even transmission failure.

Diagram Ref No 6

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

98639703400

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Oil seal for the short differential output shaft, located on the side of the gearbox with the differential cover. 

Outer Diameter: 90mm. 

Fits:
Vehicles With Tiptronic Transmission (PR 249)
Porsche 986 Boxster 1997-04

Porsche 987-1 Boxster 2005-08 
Porsche 987-1 Cayman 2006-08

Diagram ref. 3.

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

98639702700

The product you are viewing cross references to these numbers

Oil Seal For The Long Differential Output Shaft Flange, Located On The Side Of The Gearbox Without The Differential Cover Plate. 

Outer Diameter: 54mm. 

Fits:
Vehicles With Tiptronic Transmission (PR 249)
Porsche 986 Boxster 1997>>2004

Porsche 987.1 Boxster MKI 2005>>2008
Porsche 987.1 Cayman 2006>>2008

Porsche 996 Carrera 3.4L 1998>>2001

Diagram Ref No 3

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

99639701500

The product you are viewing cross references to these numbers