Remove any dirt or oil from the transmission housing sealing surface. Apply liquid gasket (P/N 08C70-K0234M) to the sealing surface. Make sure you seal the entire circumference of the bolt holes to prevent oil leakage.
NOTE: Do not install components if too much time has passed after applying the liquid gasket (for P/N 08C70-K0234M, no more than 4 minutes, for all others, no more 5 minutes). Instead, remove the old residue and reapply the liquid gasket.