2008 BMW 3 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


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_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_moreClutch


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

expand_moreClutch pressure plate

expand_moreBMW gasoline straight-4 2.0 L N43 B20 A 168 HP


M8 screws (class 10.9)	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.

expand_moreAll other modifications

expand_moreM8 screws (class 10.9)


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Second stage	85–95°85–95°85–95°


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

expand_moreDifferential

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_moreGearbox

expand_moreGearbox flange connection at engine

expand_moreBMW diesel straight-6 3.0 L M57 D30 (306D3) 208 HP

expand_moreM10


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


Screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
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_moreBMW gasoline straight-6 3.0 L N53 B30 A 208 HP

expand_moreAluminium screws (M10 × 30)


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	90–110°90–110°90–110°

expand_moreAluminium screws (M10 × 85)


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	180–200°180–200°180–200°

expand_moreAluminium screws (M12)


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreSecond stage


First step	130°130°130°
Second step	20°20°20°

expand_moreM10


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

expand_moreM12


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

expand_moreM6


Steel screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Torx steel screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


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

expand_moreBMW gasoline straight-6 2.5 L N52 B25 A 215 HP

expand_moreAluminium screws (M10 × 30)


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	90–110°90–110°90–110°

expand_moreAluminium screws (M10 × 85)


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	180–200°180–200°180–200°

expand_moreAluminium screws (M12)


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreSecond stage


First step	130°130°130°
Second step	20°20°20°

expand_moreM10


Steel screws	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Torx steel screws	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreM12


Steel screws	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Torx steel screws	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreM6


Steel screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Torx steel screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreM8


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

expand_moreAll other modifications

expand_moreM10


Screws	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Torx screws	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreM12


Screws	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Torx screws	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreM6


Screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Torx screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreM8


Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Torx screws	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreGearbox lubrication

expand_moreGearbox oil drain plug

expand_moreBMW gasoline straight-4 2.0 L N43 B20 A 161 HP


GS6-17BG/DG gearbox	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreBMW diesel straight-4 2.0 L N47 D20 C 161 HP


GS6-37BZ gearbox	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreBMW diesel straight-4 2.0 L N47 D20 A 174 HP, 340 N⋅m at 2000 RPM

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_moreBMW gasoline straight-6 3.0 L N53 B30 A 208 HP


GS6-17BG/DG gearbox	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreBMW diesel straight-6 3.0 L M57 D30 (306D3) 208 HP

expand_moreGS6-53BZ/DZ gearbox


M18	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreBMW gasoline straight-6 3.0 L N52N B30 B 255 HP

expand_moreGS6-37BZ gearbox hexagon socket screws


M18 × 1,5 screws	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m

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 and GS6-37DZ/BZ gearboxes


GS6-53BZ/DZ 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 N43 B20 A 161 HP


GA6HP19Z gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
GS6-17BG/DG gearbox	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreBMW diesel straight-4 2.0 L N47 D20 C 161 HP


GA6HP19Z gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
GS6-37BZ gearbox	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreBMW diesel straight-4 2.0 L N47 D20 A 174 HP, 340 N⋅m at 2000 RPM


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

expand_moreBMW gasoline straight-6 3.0 L N53 B30 A 208 HP


GA6HP19Z gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
GS6-17BG/DG gearbox	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreBMW diesel straight-6 3.0 L M57 D30 (306D3) 208 HP

expand_moreGS6-53BZ/DZ gearbox


M18	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreBMW gasoline straight-6 3.0 L N53 B30 A 215 HP


GS6-17BG/DG gearbox	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreBMW gasoline straight-6 3.0 L N52N B30 B 255 HP


GA6L45R gearbox	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreGS6-37BZ gearbox hexagon socket screws


M18 × 1,5 screws	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m

expand_moreAll other modifications


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.
GS6-17BG/DG, GS6-37DZ/BZ and GS6-53BZ/DZ gearboxes	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace sealing rings.

expand_moreGearbox oil sump


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

expand_moreGearbox mounting

expand_moreGearbox cross support

expand_moreBMW diesel straight-4 2.0 L N47 D20 C 161 HP

expand_moreAt the gearbox


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreOn chassis


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreBMW diesel straight-4 2.0 L N47 D20 A 174 HP, 340 N⋅m at 2000 RPM

expand_moreAt the gearbox


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreOn chassis


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreBMW diesel straight-6 3.0 L M57 D30 (306D3) 208 HP

expand_moreAt the gearbox


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 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_moreBMW gasoline straight-6 3.0 L N52N B30 B 255 HP


At the gearbox	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
On chassis	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreAll other modifications

expand_moreAt the gearbox


M10	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M12	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m

expand_moreOn chassis


M10	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreGearbox mounting

expand_moreBMW diesel straight-6 3.0 L M57 D30 (306D3) 208 HP

expand_moreAt the crossmember


M10	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M12	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m

expand_moreAt the gearbox and at the crossmember


M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll other modifications

expand_moreAt the gearbox and at the crossmember


M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2008 BMW 3 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 3 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 2008 BMW 3 Series Convertible you're not only saving money, but also also improving your technical skills and learning something new.

2008 BMW 3 Series Convertible Fifth generation Transmission Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 3 Series Convertible Fifth generation model years

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