2012 BMW 1 Series Convertible transmission fastener tightening specifications

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Condition	Value

expand_moreAxle drive


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

expand_morePropeller shaft

expand_moreM10 ribbed screws (class 10.9)


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Second stage	45°45°45°

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_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_moreAt the differential


M8	38.35 lbf⋅ft38.35 lbf⋅ft52 N⋅m
Replace screws.

expand_moreAt the differential (M10)


ZNS screws	59 lbf⋅ft59 lbf⋅ft80 N⋅m
Replace screws.
ZNS3 screws	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
Replace screws.

expand_moreAt the differential (M12)


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

expand_moreOn wheel hub


M24	184.39 lbf⋅ft184.39 lbf⋅ft250 N⋅m
Replace nuts.
M27	309.78 lbf⋅ft309.78 lbf⋅ft420 N⋅m
Replace nuts.

expand_moreClutch

expand_moreClutch master cylinder


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

expand_moreClutch pressure plate


M8 screws (class 10.9)	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
M8 screws (class 8.8)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


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

expand_moreGearbox

expand_moreGearbox flange connection at engine

expand_moreBMW diesel straight-4 2.0 L N47 D20 B 201 HP

expand_moreM10


Hexagon head screws	36.14 lbf⋅ft36.14 lbf⋅ft49 N⋅m
Torx screws	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreM12


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

expand_moreM6


Hexagon head screws	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Torx screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


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

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 215 HP at 6600 RPM, 300 N⋅m at 2500 RPM

expand_moreAluminium screws

expand_moreM10 × 30 screws


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	66.38–81.13 lbf⋅ft66.38–81.13 lbf⋅ft90–110 N⋅m

expand_moreM10 × 85 screws


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	132.76–147.51 lbf⋅ft132.76–147.51 lbf⋅ft180–200 N⋅m

expand_moreM12


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws.
Second stage	130°130°130°
Third stage	20°20°20°

expand_moreM10


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

expand_moreM12


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

expand_moreM6


Hexagon head screws	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Torx screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


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

expand_moreBMW gasoline straight-6 3.0 L N54 B30 A 302 HP

expand_moreAluminium screws

expand_moreM10 × 30 screws


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	66.38–81.13 lbf⋅ft66.38–81.13 lbf⋅ft90–110 N⋅m

expand_moreM10 × 85 screws


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	132.76–147.51 lbf⋅ft132.76–147.51 lbf⋅ft180–200 N⋅m

expand_moreM12


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace screws.
Second stage	130°130°130°
Third stage	20°20°20°

expand_moreM10


Hexagon head screws	36.14 lbf⋅ft36.14 lbf⋅ft49 N⋅m
Torx screws	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreM12


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

expand_moreM6


Hexagon head screws	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Torx screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


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

expand_moreAll other modifications

expand_moreM10


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

expand_moreM12


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

expand_moreM6


Hexagon head screws	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Torx screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


Hexagon head 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_moreGearbox oil drain plug

expand_moreBMW gasoline straight-4 2.0 L N46 B20 B 134 HP

expand_moreGS6-17BG gearbox


M12 × 1,5 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
M18 × 1,5 screws	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreBMW gasoline straight-4 2.0 L N46 B20 B 154 HP

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 and GS6-37DZ/BZ gearboxes


GS6-53BZ/DZ gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

expand_moreBMW diesel straight-4 2.0 L N47 D20 C 194 HP

expand_moreWith 6-speed gearbox


GS6-37DZ gearbox	38.35 lbf⋅ft38.35 lbf⋅ft52 N⋅m

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 215 HP at 6600 RPM, 300 N⋅m at 2500 RPM

expand_moreGA6HP19Z automatic 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, GS6-17DG, GS6-37DZ, and GS6-37BZ manual gearbox


GS6-53BZ/DZ gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

expand_moreBMW gasoline straight-6 3.0 L N51 B30 A 229 HP


GA6L45R gearbox	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m

expand_moreBMW gasoline straight-6 3.0 L N55 B30 A 322 HP


GS6-17BG/DG gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

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.


GS6-17BG/DG gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

expand_moreGearbox oil filler plug

expand_moreBMW gasoline straight-4 2.0 L N46 B20 B 134 HP

expand_moreWith 6-speed gearbox


GS6-17BG gearbox	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreWith automatic 6-gear gearbox


GA6L45R gearbox	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreBMW gasoline straight-4 2.0 L N46 B20 B 154 HP


GA6HP19Z gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.
GA6L45R gearbox	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Replace sealing rings.

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


GS6-53BZ/DZ gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

expand_moreBMW diesel straight-4 2.0 L N47 D20 C 194 HP

expand_moreWith 6-speed gearbox


GS6-37DZ gearbox	38.35 lbf⋅ft38.35 lbf⋅ft52 N⋅m

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 215 HP at 6600 RPM, 300 N⋅m at 2500 RPM

expand_moreWith automatic gearbox


GA6HP19Z gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.
GA6L45R gearbox	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Replace sealing rings.

expand_moreGS6-17BG, GS6-17DG, GS6-37DZ, and GS6-37BZ manual gearbox


GS6-53BZ/DZ gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.


All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

expand_moreGearbox mounting

expand_moreGearbox cross support


On chassis	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreGearbox mounting


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 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 1 Series Convertible 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 1 Series Convertible 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 1 Series Convertible you're not only saving money, but also also improving your technical skills and learning something new.

2012 BMW 1 Series Convertible First generation LCI Transmission Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 1 Series Convertible First generation LCI model years

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