2020 BMW 4 Series Coupe transmission fastener tightening specifications

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Condition	Value

expand_moreAxle drive

expand_moreFront axle drive shaft

expand_moreM16 central screws


First stage	154.89 lbf⋅ft154.89 lbf⋅ft210 N⋅m
Replace collar screw and pressure spring.
Second stage	90°90°90°

expand_morePropeller shaft intermediate bearing


At the gearbox	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m

expand_morePropeller shaft

expand_more420 d with diesel straight-4 2.0 L 161 HP engine (2013.7–)


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

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_more425 d with diesel straight-4 2.0 L 208 HP engine (2014.1–)


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

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_moreAll other modifications

expand_moreAt the gearbox


First stage	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Second stage	90°90°90°

expand_moreRear axle drive shaft


First stage	106.95 lbf⋅ft106.95 lbf⋅ft145 N⋅m
Replace nuts.
Second stage	45°45°45°

expand_moreTransfer case propeller shaft front axle

expand_more420 i xDrive with gasoline straight-4 2.0 L 161 HP engine (2013.11–)

expand_moreM8


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

expand_moreAll other modifications


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	45°45°45°

expand_moreTransfer case propeller shaft rear axle

expand_more420 i xDrive with gasoline straight-4 2.0 L 161 HP engine (2013.11–)


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

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_moreAll other modifications


At the differential	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
At the propeller shaft	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m

expand_moreClutch


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

expand_moreClutch pressure plate


First stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace bolts.
Second stage	90°90°90°


Clutch slave cylinder	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Replace nuts.

expand_moreDifferential

expand_moreDifferential cover


M10	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m

expand_moreFront axle differential


On engine sump	103.26 lbf⋅ft103.26 lbf⋅ft140 N⋅m

expand_moreFront axle differential oil filler plug


M22	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m

expand_moreRear axle differential


Front	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Rear	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

expand_moreGearbox

expand_moreGearbox flange connection at engine

expand_more420 d with diesel straight-4 2.0 L 161 HP engine (2013.7–)

expand_moreAluminium screws

expand_moreM12


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace bolts.
Second stage	130°130°130°

expand_moreM10


Screws	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreM12


Steel screws	48.68 lbf⋅ft48.68 lbf⋅ft66 N⋅m

expand_moreM6


Screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


Screws	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_more420 d xDrive with diesel straight-4 2.0 L 161 HP engine (2013.11–)


M10	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m
M12	48.68 lbf⋅ft48.68 lbf⋅ft66 N⋅m
M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_more425 d with diesel straight-4 2.0 L 208 HP engine (2014.1–)

expand_moreAluminium screws

expand_moreM12


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace bolts.
Second stage	130°130°130°

expand_moreM10


Screws	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreM12


Steel screws	48.68 lbf⋅ft48.68 lbf⋅ft66 N⋅m

expand_moreM6


Screws	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreM8


Screws	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_more430 d with diesel straight-6 3.0 L 255 HP engine (2013.11–)

expand_moreGA8HP70Z gearbox M8 screws


Torx steel screws	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m

expand_moreM10


Torx screws	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreM10 screws (class 10.9)


Torx screws	41.3 lbf⋅ft41.3 lbf⋅ft56 N⋅m

expand_moreM12


Torx steel screws	48.68 lbf⋅ft48.68 lbf⋅ft66 N⋅m

expand_moreM6


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

expand_moreM8


Torx steel screws	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_more430 d xDrive with diesel straight-6 3.0 L 255 HP engine (2014.1–)

expand_moreGA8HP70Z gearbox M8 screws


Torx steel screws	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m

expand_moreM10


Torx screws	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreM10 screws (class 10.9)


Torx screws	41.3 lbf⋅ft41.3 lbf⋅ft56 N⋅m

expand_moreM12


Torx steel screws	48.68 lbf⋅ft48.68 lbf⋅ft66 N⋅m

expand_moreM6


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

expand_moreM8


Torx steel screws	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreAll other modifications

expand_moreM10 × 85 screws


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	180°180°180°
Loosen screws.
Third stage	200°200°200°

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°
Steel screws	48.68 lbf⋅ft48.68 lbf⋅ft66 N⋅m

expand_moreM8


Steel screws	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreTorque converter

expand_moreGA6HP26Z gearbox


M10 screws (class 10.9)	41.3 lbf⋅ft41.3 lbf⋅ft56 N⋅m
Clean the thread, use new screws and screw-locking compound.

expand_moreGA8HP90Z gearbox


M10 screws (class 10.9)	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Clean the thread, use new screws and screw-locking compound.

expand_moreGearbox lubrication

expand_moreGearbox oil drain plug

expand_moreBMW gasoline straight-4 2.0 L N20 B20 A 241 HP


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_moreAll other modifications

expand_moreGA8HP90Z gearbox


M10	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m

expand_moreGearbox oil filler plug

expand_moreBMW gasoline straight-4 2.0 L N20 B20 A 241 HP


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_moreAll other modifications

expand_moreGA8HP90Z gearbox


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


M30 × 1,5 screws	59 lbf⋅ft59 lbf⋅ft80 N⋅m

expand_moreGearbox oil sump

expand_morePlastic oil sump (M6)


First stage	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Replace screws.
Second stage	45°45°45°
Steel screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreGearbox mounting

expand_moreGearbox cross support

expand_more420 d with diesel straight-4 2.0 L 161 HP engine (2013.7–)

expand_moreAt the gearbox bracket


M12	50.15 lbf⋅ft50.15 lbf⋅ft68 N⋅m
Otherwise	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m


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

expand_more420 i with gasoline straight-4 2.0 L 161 HP engine (2013.11–)

expand_moreAt the gearbox bracket


M12	50.15 lbf⋅ft50.15 lbf⋅ft68 N⋅m

expand_moreOn chassis


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_more425 d with diesel straight-4 2.0 L 208 HP engine (2014.1–)

expand_moreAt the gearbox bracket


M12	50.15 lbf⋅ft50.15 lbf⋅ft68 N⋅m
Otherwise	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m


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

expand_more435 i with gasoline straight-6 3.0 L 302 HP engine (2013.7–)


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

expand_moreAll other modifications


M10	35.4 lbf⋅ft35.4 lbf⋅ft48 N⋅m
M12	50.15 lbf⋅ft50.15 lbf⋅ft68 N⋅m
M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreGearbox mounting


At the gearbox	35.4 lbf⋅ft35.4 lbf⋅ft48 N⋅m
With automatic gearbox	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreGearbox support


At the gearbox	35.4 lbf⋅ft35.4 lbf⋅ft48 N⋅m
On chassis	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreTransfer case

expand_moreTransfer box onto transmission flange connection

expand_more420 d xDrive with diesel straight-4 2.0 L 161 HP engine (2013.11–)


M10	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m


All other modifications	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 2020 BMW 4 Series Coupe 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

Chassis and Body Fastener Tightening Specifications
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 4 Series Coupe 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 2020 BMW 4 Series Coupe you're not only saving money, but also also improving your technical skills and learning something new.

2020 BMW 4 Series Coupe First generation LCI Transmission Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 4 Series Coupe First generation LCI model years

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