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Jun 19, 2019

Throw Out Bearings for Nissan Skyline and RB26dett

There are two main types or styles of throw out bearings (TOB) for a Nissan Skyline, push and pull.  There is a third style that isn't OEM for these cars, but is used OEM on many later cars which is a hydraulic throw out bearing.

If you are swapping or changing parts on a push style transmission. You should always check for free play.  Free play is the distance between the clutch face and the throw out bearing. If you have too much free play the clutch will not disengage.  If you have too little, the clutch will always slip and you will burn it out. Ask me how I know about that last part.   I have installed clutches, not checked free play, and hurt the clutch just cruising around.  Don't be like me. Check and see. Many aftermarket clutches require a different throw out bearing. Know what clutch you have, and what the manufacturer recommends. If you don't have instructions, then you are going to have to ask the Google.

OEM R32 GT-R early clutch. Notice clutch fingers. This is a push clutch

Factory Clutch and Throw Out Bearings For Nissan Skyline

Late R32 bellhousing. This has bosses for push and pull clutch. It is currently a push clutch, or early.

Early or Push style clutch
Throw Out Bearing Push- 30502-21000 

Koyo RCT4075-1S (Replacement for 30502-21000)

NSK 40TRK1 (Replacement for 30502-21000)

Late or Pull style clutch

Disc- 30100-0V708
Cover- 30210-24U00
Bearing- 30502-12U00
Late Pull Slave Cylinder assembly -30620-12U0A

Disc- 30100-21U01
Cover- 30210-21U00
Throw out bearing- Pull- 30502-12U00
 (300ZX part)
 or 30502-45P00 (300ZX part)
Bearing Sleeve- 30501-S0200 (18mm)

R33 GTR (OEM all pull)
Disc- 30100-0V708
Cover- 30210-24U00
Bearing- 30502-12U00
Late Pull Slave Cylinder assembly -30620-12U0A

Getrag V160 (R34 GT-R) with a pull to push conversion kit for an ATS carbon clutch

R34 GTR (OEM all pull)
Disc- 30100-0V708
Cover-30210 - AA300
Bearing- 30502-12U00
Late Pull Slave Cylinder assembly -30620-12U0A

Crank dowel: 13032-18000
Rear Main seal - 12279-5L310
Pilot Bearing - 32202-B950A 
Supersession(s): 13021-B9500; 13022-B9500; 13023-B9500; 15041-B9500; 15043-B9500; 32202-30000; 32202-B9500; 32202B950A

 Flywheel -12310-05U10(earliest part number. Supersedes to 12310-05U16). All the push and pull use the same flywheel. As does the RB20. 

12310-05U13 which fits pull/late R32 and early R33 according to part number. Then superseded to 05U14 and then 05U16.


Nissan Skyline throw out bearing carrier. These are available in many different heights. It is important to check free play

Depending on what clutch, and flywheel you are running, you may need a new throw out bearing sleeve for the early, push style clutches. The height listed is from the front side of the fork to the seat position of the bearing.

30501-22102 8mm
30501-B5000 10mm
30501-A3800 12mm
30501-N1601 14mm
30501-U0200 16mm
30501-S0200 18mm
30501-B6000 20mm
30501-S0160 22mm
30501-K0404 24mm
30501-K0510 26mm

The height of the carrier sets your free play.  I don't know what yours is, I don't know what carrier it should be. You can reuse the old parts and hope. You can read the instructions that came with your clutch for guidance.  Please don't ask me which you need. You have to assemble and measure/ check free play.  Tilton hydraulic release bearing technical installation information. 

Exedy push clutch throw out bearing for twin disk clutch


30502-14601  - OEM throw out bearing
RCT4067L1 -  Koyo release bearing

Clutch Pedal Adjustment for Nissan Skyline GT-R

The clutch pedal may also need some adjustment. This is the procedure from the service manual

OS Giken TOB sleeve recommended lengths. 

All the early cars have push style clutches.  That is 1989- Jan 1993.  However, it is 2019.  You don't know what happened in your cars life. If you blindly chose parts without checking, you are probably in for a rude awakening. Look at the car, its pretty easy to check, and know if your car is push or pull clutch. You don't want to find that out, after you have ordered parts from Japan, have the transmission out, and realize you have the wrong part.   The later transmission bellhousings normally have both bosses on them for either throw out bearing. However the early transmissions do not have the later bosses on them.

This is a conversion kit from OS Giken to convert a pull style transmission to a push style clutch. 

Hydraulic throw out bearing and a Tilton triple plate carbon clutch. This is a big boy clutch
Hydraulic throw out bearing on a Getrag transmission

The later cars, and the R34 GT-R all have pull style of clutches. Part numbers are above.
How to release a pull style throw out bearing

Pull style clutch. Notice ring at center

Showing throw out bearing for a pull clutch

Nissan Skyline GT-R Transmission information
Clutch Weights
How to install a 6 speed Getrag in a R32/R33 GT-R

Buy USA Legal R32 and R33 Skylines at! for Nissan Skyline GT-R and GT-R parts.

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