When starting the game with this mod and assembler pipe passthrough you get this error
Failed to load mods: Error while running setup for entity prototype "casting-plant" (assembling-machine): Invalid fluid pipe connections. For entity direction North connection [fluid box manager box 4 connection 1] collides with [fluid box manager box 3 connection 1]. Definition [type=normal, position={-4, -4}, direction=North]
mod: https://mods.factorio.com/mod/assembler-pipe-passthrough