B Series Transmission / Gearbox Codes

B Series Transmissions

Note: All (1992 up, non prelude)”Big Spline” B series Transmissions are interchangeable. YS1 casing can take S80 Internals or a hydraulic conversion kit can be used to operate hydraulic transmissions in cable operated models however a1/s1/j1/y1 internals do not swap into the later model YS1 or hydraulic casings due to different shaft diameters.

J1/S1

  • Found in: Integra XSI/RSI (DA6) Civic sir (EF9) Crx sir (EF8)(da9)
  • Type: Cable
  • 1st: 3.25
  • 2nd: 2.052
  • 3rd: 1.416
  • 4th: 1.103
  • 5th: 0.906
  • R: 3.000
  • FD: 4.400

A1/S1/YS1

  • Found in: 1990-93 USDM Integra LS/RS/GS (DA)
  • Type:cable
  • 1st: 3.230
  • 2nd: 1.901
  • 3rd: 1.269
  • 4th: 0.966
  • 5th: 0.542
  • R: 3.000
  • FD: S1/YS1 4.266bh
  • FD: A1 4.400

Y1

  • Found in: CRX/Civic (optional LSD)
  • Type: Cable
  • 1st: 3.166
  • 2nd: 2.052
  • 3rd: 1.416
  • 4th: 1.102
  • 5th: 0.870
  • R: 3.000
  • FD: 4.266

Y2

  • Found in: CRX/Civic UKDM (optional LSD)
  • Type: Cable
  • 1st: 3.166
  • 2nd: 2.052
  • 3rd: 1.416
  • 4th: 1.102
  • 5th: 0.870
  • R: 3.000
  • FD: 4.133

YS1

  • Found in: Integra 92-93 XSI/RSI (DA6, DA9)
  • Type: Cable
  • 1st: 3.307
  • 2nd: 2.999
  • 3rd: 1.459
  • 4th: 1.107
  • 5th: 0.880
  • R: 3.000
  • FD: 4.400

S80/N3E

  • Found in: Integra Type R Spec R 98+ (LSD)
  • Type: Hydraulic
  • 1st: 3.230
  • 2nd: 2.105
  • 3rd: 1.458
  • 4th: 1.034
  • 5th: 0.787
  • R: 3.000
  • FD: 4.785

S80/Y80

  • Found in: JDM SiR-G (optional LSD) / 94+ USDM GS-R (no LSD)
  • Type: Hydraulic
  • 1st: 3.231
  • 2nd: 1.923
  • 3rd: 1.431
  • 4th: 1.034
  • 5th: 0.787
  • R: 3.000
  • FD: 4.400

S9B

  • Found in: EDM UKDM MB6 (LSD) Helical LSD (same as S80)
  • Type: Hydraulic
  • 1st: 3.230
  • 2nd: 1.900
  • 3rd: 1.360
  • 4th: 1.034
  • 5th: 0.848
  • R: 3.000
  • FD: 4.267

Y21/Y80/S80/S4C

  • Found in:
    • JDM 96-97 Integra R(LSD)
    • JDM Civic Type R [EK9](LSD)
    • JDM Civic SiR [EK4, EG6](optional LSD)
    • JDM CR-X DEL SOL SIR (EG2)(optional LSD)
    • USDM DEL SOL VTEC (EG2)(OPTIONAL LSD)
    • UKDM Civic Vti (EG6, EK4, EM1)
  • Type: Hydraulic
  • 1st: 3.230
  • 2nd: 2.105
  • 3rd: 1.458
  • 4th: 1.107
  • 5th: 0.848
  • R: 3.000
  • FD: 4.400

6 thoughts on “B Series Transmission / Gearbox Codes”

  1. Sean

    Great info here! Would you be able to tell us where to physically locate the model number on the transmission for identification purposes? The VINs are in a different format here in Japan. I have a CH9(H23A VTEC blue top), my friend has a CL3 chassis with a “black top” VTEC. Trying to see which models use the same transmission, to use for a swap and/or parts.

    Reply ↓
    1. Ben Post author

      Hey Sean,

      Thanks very much for your comment. I haven’t done any work on this blog for a while… I should really get back to it!
      Basically… Its on a sticker displayed on the box. Here is an example of an S9B box:
      Where is the Code? On the sticker :-)

      Reply ↓
  2. Sean

    Okay, cool. Thank you. I’ll have to search around some more. All the ones I’ve looked at have two stickers next to each other. They can be seen from the top of the engine compartment, close to the EPS box. That one in your pic looks to be in a different location. Could you give me an idea of where that is?

    Reply ↓
    1. Ben Post author

      I’m on my way the the nurburgring and not in my Honda! When I find a Honda or get home I’ll take a photo for you 🙂

      Reply ↓

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