2012 BMW 3 Series Sedan transmission fastener tightening specifications

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Condition	Value

expand_moreAxle drive

expand_moreFront axle drive shaft

expand_moreM27


Central nuts	309.78 lbf⋅ft309.78 lbf⋅ft420 N⋅m
Replace the nut and lightly oil the contact surfaces.


Propeller shaft intermediate bearing	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m

expand_morePropeller shaft

expand_moreAll other modifications


Insert nuts	62.69 lbf⋅ft62.69 lbf⋅ft85 N⋅m
Replace nuts and let cure for 2 hours.

expand_moreM10 screws (class 10.9)


Screws	47.2 lbf⋅ft47.2 lbf⋅ft64 N⋅m

expand_moreM10 ZNS screws (class 10.9)


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws and nuts.
Second stage	90°90°90°

expand_moreM10 screws (class 8.8)


Screws	35.4 lbf⋅ft35.4 lbf⋅ft48 N⋅m

expand_moreZNS screws (M12, class 10.9)


First stage	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Replace screws and nuts.
Second stage	90°90°90°

expand_moreRear axle drive shaft

expand_moreAll other modifications

expand_moreM10 screws with ribbing


Torx screws	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
Replace screws.

expand_moreM12 screws with ribbing


Torx screws	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Replace screws.

expand_moreM24 central nuts


First stage	106.95 lbf⋅ft106.95 lbf⋅ft145 N⋅m
Replace the nut and lightly oil the contact surfaces.
Second stage	45°45°45°

expand_moreM27


Central nuts	309.78 lbf⋅ft309.78 lbf⋅ft420 N⋅m
Replace the nut and lightly oil the contact surfaces.

expand_moreM8 screws with ribbing


Torx screws	38.35 lbf⋅ft38.35 lbf⋅ft52 N⋅m
Replace screws.

expand_moreTransfer case propeller shaft front axle

expand_moreM8


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws and nuts.
Second stage	45°45°45°

expand_moreTransfer case propeller shaft rear axle

expand_moreM10 screws (class 10.9)


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws and nuts.
Second stage	90°90°90°

expand_moreM12 screws (class 10.9)


First stage	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Replace screws and nuts.
Second stage	90°90°90°

expand_moreClutch

expand_moreClutch master cylinder

expand_moreAll other modifications


At the bearing pedestal	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreClutch pressure plate

expand_moreAll other modifications

expand_moreM8 screws (class 10.9)


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
The ZNS screws must be replaced
Second stage	85–95°85–95°85–95°
Otherwise	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
Use new screws.


M8 screws (class 8.8)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Use new screws.


Clutch slave cylinder	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreDifferential

expand_moreFront axle differential


On engine sump	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m


Front axle differential oil drain plug	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Front axle differential oil filler plug	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m

expand_moreRear axle differential

expand_moreAt the axle support


M12	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
M14	121.7 lbf⋅ft121.7 lbf⋅ft165 N⋅m
Replace nuts.


Rear axle differential oil filler screws	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screw.

expand_moreGear shifting

expand_moreBack-up lamp switch


M12	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m

expand_moreGearbox

expand_moreGearbox flange connection at engine

expand_moreAll other modifications

expand_moreM10


Screws	36.14 lbf⋅ft36.14 lbf⋅ft49 N⋅m
Torx screws	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m

expand_moreM12


Screws	54.58 lbf⋅ft54.58 lbf⋅ft74 N⋅m
Torx screws	48.68 lbf⋅ft48.68 lbf⋅ft66 N⋅m

expand_moreM6

Figure 1. Gearbox, Gearbox flange connection at engine, All other modifications, M6.


Screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
See figure 1.
Torx screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Torx screws	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreGearbox lubrication

expand_moreDistributor gearbox oil control screws


M22	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace sealing rings.

expand_moreDistributor gearbox oil drain plug


All other modifications	24.34 lbf⋅ft24.34 lbf⋅ft33 N⋅m

expand_moreDistributor gearbox oil filler screws


All other modifications	24.34 lbf⋅ft24.34 lbf⋅ft33 N⋅m

expand_moreGearbox oil drain plug

expand_moreAll other modifications

expand_moreGA6HP19Z gearbox


Plastic oil sump	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
Replace sealing rings.
With light-alloy oil sump	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace sealing rings.

expand_moreGS6-17BG/DG gearbox


M18 × 1,5 screws	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreGS6-17BG/DG and GS6-37DZ/BZ gearboxes


M12 × 1,5 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreGS6-37DZ/BZ and GS6-53BZ/DZ gearboxes


M18 × 1,5 screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreS5D 200G, S5D 250G, and S5D 310Z gearboxes


S5D 320Z gearbox	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreS6S 420G gearbox


S6S 560G gearbox	38.35 lbf⋅ft38.35 lbf⋅ft52 N⋅m

expand_moreGearbox oil filler plug

expand_moreAll other modifications


GA6HP19Z gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

expand_moreGS6-17BG/DG gearbox


M18 × 1,5 screws	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreGS6-17BG/DG and GS6-37DZ/BZ gearboxes


M12 × 1,5 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreGS6-37DZ/BZ and GS6-53BZ/DZ gearboxes


M18 × 1,5 screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreS5D 200G, S5D 250G, and S5D 310Z gearboxes


S5D 320Z gearbox	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreS6S 420G gearbox


S6S 560G gearbox	38.35 lbf⋅ft38.35 lbf⋅ft52 N⋅m

expand_moreGearbox oil sump


GA6HP19Z gearbox	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreGearbox mounting

expand_moreGearbox cross support

expand_moreAll other modifications

expand_moreAt the gearbox


M10	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
M12	53.84 lbf⋅ft53.84 lbf⋅ft73 N⋅m

expand_moreOn chassis


M10	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreGearbox mounting


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreTransfer case


Transfer box onto transmission flange connection	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2012 BMW 3 Series Sedan user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and BMW warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Engine Fastener Tightening Specifications
Front Suspension Fastener Tightening Specifications
Rear Suspension Fastener Tightening Specifications
Transmission Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow BMW 3 Series Sedan service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 2012 BMW 3 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.

2012 BMW 3 Series Sedan generations

In 2012 BMW offered 2 generations of the 3 Series Sedan. Transmission fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.

Sixth generation

F30

2012 BMW 3 Series Sedan Fifth generation LCI Transmission Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

2012 BMW 3 Series Sedan generations

Sixth generation

BMW 3 Series Sedan Fifth generation LCI model years

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