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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > What are the differences between the auto vs manual subframe?



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      08-30-2021, 06:25 AM   #1
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What are the differences between the auto vs manual subframe?

So I’m doing a VERY overdue rear subframe & suspension overhaul due to rust/age/mileage. I’ve since bought a used rear subframe assy cleaned, degreased removed any flakey rust and painted this subframe. However I’ve just realised this subframe came of an auto and mine is a manual. Now I guess there must be some differences between the two as bmw wouldn’t go to all the effort of making a different subframe for nothing right! I can’t see the subframe mounts changing location between subframes because that would therefore mean the whole chassis would be different and I can’t see any of the rear suspension linkage arms being different either as auto/manual shouldn’t require different setup like xdrive does. So I believe all that’s left that bolts onto the rear subframe is the rear differential which we all know IS different between the manual and auto, with this in mind will this used rear subframe from an auto fit my manual diff? Have I missed anything else? Thank you!

Manual subframe PN - 33316783714
Auto subframe PN - 33316783715

Other part numbers that change between auto/manual subframe

Rear subframe to body bolt
Manual - 33326760340
Auto - 33306793892

Rear subframe “push rod” bolts
Manual Bolt - 33326768354
Auto bolt - 33326796225

Differential bush (single bush side)
Manual - 33316769376
Auto - 33176770866

Differential to subframe bolt (single bush side)
Manual - 33176760342
Auto - 33326769647
Auto (with sunroof) - 33306785433
I am obviously unsure if the used rear subframe I have came of car with sunroof as well….

Differential to subframe nut (single bush side)
Manual - 33326760380
Auto - 33326770288
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