Gearbox cylindrical roller bearing. Porsche 911 87-89 / 964 /993 / 996T / 997T  ›  99911011701

Gearbox cylindrical roller bearing. 30 x 62 x 20
OE Match cylindrical roller bearing for the gearbox assemblies of selected Porsche models. Its supplied dimensions are 30 x 62 x 20 mm, with five-speed and six-speed manual applications detailed below.

Fits
For cars with 5-speed MANUAL transmission
Porsche 911 Carrera 1987 - 1989 
Porsche 911 (930) Turbo 1989
Porsche 964 C2 / C4 1989 - 1994 
Porsche 964 Carrera 2 RS 1992 
Porsche 964 Turbo 1991 

For cars with 6-speed MANUAL transmission
Porsche 993 C2 / C4 / C4S 1994 - 1998
Porsche 993 Carrera RS 1995
Porsche 993 Turbo 1995 - 1998
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 997 GT2 2008 - 2009
Porsche 997 GT2 RS 2011
Porsche 996 GT3 1999 - 2005
Porsche 997 GT3 / GT3 RS 2007 - 2011

Diagram ref no 27

What This Product Does

The bearing supports rotating components within the transmission, helping maintain their alignment while limiting friction. It is an internal gearbox component, rather than a clutch release bearing or retaining plate.

Functions

• Support rotation within the gearbox assembly.
• Help locate transmission components accurately.
• Limit friction at the bearing interface.

Symptoms of Fault

• Whining or rumbling from the transmission.
• Excessive movement in a supported shaft.
• Metallic debris discovered during an oil inspection.
• Visible bearing discolouration or damaged rolling surfaces.

Why Replacement Matters

A worn bearing can allow unwanted movement and contribute to further internal wear. During repair or rebuilding, inspect neighbouring bearings, shaft surfaces, retaining components and lubrication condition rather than treating noise alone as proof of this bearing's failure.

FAQs

• Does gearbox noise confirm a faulty bearing?
  No. Oil condition, mounts, clutch components and other internal parts can produce similar symptoms, so diagnosis should precede replacement.
• Can only one bearing be renewed?
  A single replacement may be appropriate after inspection. A gearbox rebuild should include an assessment of the other bearings and supporting components.
• What should be checked before fitting?
  Verify the transmission code, original reference and dimensions, then assess adjacent components and use the specified gearbox lubricant.

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Related, superseded, cross reference or alternative numbers for comparison.

99911011701

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