This Stock Brass Synchro will work in the following transmissions:
For 2nd Gear Only Fitments:
(92-01 GSR/ITR Civic SI) Y80, S80, S4C, Y21, YS1, S21, B16, B17, B18C, M2Y4, M2U4, M2A4, M2F4, M2B4, M2S4, H2U5, P2U5, P2A8
For 1st & 2nd Gear Fitments:
U2Q7, T2W4, SBXM