There are three bellhousings used for the 15 different models of the 5HP24 used in BMWs

1) 1058 322 016 is used for the majority of models (003, 004, 005, 010, 016, 017, 018, 020, 021, 022 & 029)
2) 1058 322 012 is used for the diesel models (023 & 036) – obviously because they’re mated to the M57 engine rather than the M62
3) 1058 322 020 is used for the 034 & 035 models which use the larger L51 torque converter. The casting is the same as for 1058 322 016 but, as already discussed, the stiffening ribs are partially machined away to provide clearance for the larger converter

Nine different torque converters are used for BMW models of the 5HP24 (and 4 different converters for Jaguar models)

Phil