why don't u try it first? g3, which model? gsr or typer/ls/rs/gs? i doubt it will fit because the g2 the pipe goes farther near the fender around the battery and the g3s the abs system is in the way. unless u have rs then the rs doesn't have abs. ok i just read ur profile. which b18c do u have? gsr or type r? if it's type-r then it should fit because the TB is at the same location. but for a gsr it sits lower in engine bay. well, just try to fit it.