2018 BMW 6 Series M6 Coupe engine fastener tightening specifications

in your garage to make future searches easy.

Condition	Value

expand_moreAir intake system


Intake manifold	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreAuxiliary assemblies


Auxiliary drive belt tensioner	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreAir-conditioning compressor


M8	13.28–17.7 lbf⋅ft13.28–17.7 lbf⋅ft18–24 N⋅m

expand_moreAir-conditioning compressor pressure line


M6	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
M8	13.28 lbf⋅ft13.28 lbf⋅ft18 N⋅m

expand_moreAlternator


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreHydraulic lines at the servo-steering pump


M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreServo pump pulley


M8	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m

expand_moreServo steering pump


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Replace screws.

expand_moreCarburetion


Fuel-distributing pipe	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreHigh-pressure line

expand_moreM14


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Second stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreHigh-pressure pump


M6	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m
Tighten the new screws evenly in several steps.

expand_moreInjection hoses

expand_moreM12


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Second stage	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m


Injection nozzle (injector)	8.11–11.06 lbf⋅ft8.11–11.06 lbf⋅ft11–15 N⋅m

expand_moreCharging

expand_moreTurbo charger


Clamps	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
Use new parts.

expand_moreCooling system


Coolant pump	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.

expand_moreCylinder head

expand_moreCamshaft bearing


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten the bearing cover of the camshafts in 1/2 turning steps from inside to outside.

expand_moreCylinder head screws

expand_moreBMW gasoline V8 4.4 L S63 B44 B 552 HP

expand_moreScrews 1 – 10

Figure 1. Cylinder head, Cylinder head screws, BMW gasoline V8 4.4 L S63 B44 B 552 HP, Screws 1 – 10.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws. See figure 1.

expand_moreScrews 1 – 10


Second stage	90°90°90°
Third stage	140°140°140°

expand_moreScrews 11 – 12


Fourth stage	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreBMW gasoline V8 4.4 L S63 B44 B 567 HP

expand_moreScrews 1 – 10


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws. See figure 1.

expand_moreScrews 1 – 10


Second stage	90°90°90°
Third stage	140°140°140°

expand_moreScrews 11 – 12


Fourth stage	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreBMW gasoline V8 4.4 L S63 B44 B 591 HP

expand_moreScrews 1 – 10

Figure 2. Cylinder head, Cylinder head screws, BMW gasoline V8 4.4 L S63 B44 B 591 HP, Screws 1 – 10.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
See figure 2.

expand_moreScrews 1 – 10


Second stage	90°90°90°
Third stage	140°140°140°

expand_moreM8 × 30 screws


Screws 11 – 12	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreValve cover

expand_moreBMW gasoline V8 4.4 L S63 B44 B 552 HP

Figure 3. Cylinder head, Valve cover, BMW gasoline V8 4.4 L S63 B44 B 552 HP.


First cylinder row	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten bolts uniformly in several passes. See figure 3.
Figure 4. Cylinder head, Valve cover, BMW gasoline V8 4.4 L S63 B44 B 552 HP.
Second cylinder row	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten bolts uniformly in several passes. See figure 4.

expand_moreBMW gasoline V8 4.4 L S63 B44 B 567 HP

Figure 5. Cylinder head, Valve cover, BMW gasoline V8 4.4 L S63 B44 B 567 HP.


First cylinder row	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten bolts uniformly in several passes. See figure 5.
Figure 6. Cylinder head, Valve cover, BMW gasoline V8 4.4 L S63 B44 B 567 HP.
Second cylinder row	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten bolts uniformly in several passes. See figure 6.


BMW gasoline V8 4.4 L S63 B44 B 591 HP	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreNew connecting rod with new connecting rod screws


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Second stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Third stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Fourth stage	75°75°75°

expand_moreCrankshaft central screws

expand_moreM18 × 1,5 screws


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Replace screws. Oil bearing face.
Second stage	60°60°60°
Third stage	60°60°60°
Fourth stage	60°60°60°


Crankshaft pulley	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Flywheel	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Replace screws.

expand_moreMain bearing

expand_moreScrews 1 – 10

Figure 7. Engine block, Main bearing, Screws 1 – 10.


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws. See figure 7.
Second stage	115°115°115°

expand_moreScrews 11 – 20


Third stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Fourth stage	55°55°55°

expand_moreThreaded sleeve


Fifth stage	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m

expand_moreScrews 21 – 30


Sixth stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Seventh stage	45°45°45°

expand_moreEngine control

expand_moreBottom part of the control unit housing


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreM8


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Second stage	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m

expand_moreCamshaft timing chain guide rail


M14	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace sealing rings.

expand_moreCamshaft timing chain slip rail


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreCamshaft timing chain tensioner


M7	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m

expand_moreCamshaft timing chain tensioning rail


M10	33.93 lbf⋅ft33.93 lbf⋅ft46 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreInlet camshaft wheel


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws. Apply copper paste onto bearing face.
Second stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Third stage	90°90°90°

expand_moreOil pump drive chain tensioner


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreOutlet camshaft wheel


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws. Apply copper paste onto bearing face.
Second stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Third stage	90°90°90°


Timing case cover first cylinder row	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Timing case cover second cylinder row	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine lubrication


Oil drain plug	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil pump


M8	17.7 lbf⋅ft17.7 lbf⋅ft24 N⋅m

expand_moreOil pump chain wheel

expand_moreM10


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	40°40°40°

expand_moreOil sump

expand_moreM6


Oil sump lower part	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Oil sump top part	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreM8


Oil sump top part	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
Replace screws.

expand_moreEngine management


Camshaft sensor	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Charge air pressure sensor	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m
Crankshaft sensor	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Knock sensor	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine mounting

expand_moreSubframe

expand_moreOn chassis (M10)


First stage	41.3 lbf⋅ft41.3 lbf⋅ft56 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreSubframe stiffening plate

expand_moreAt the subframe (M10)


First stage	41.3 lbf⋅ft41.3 lbf⋅ft56 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreExhaust system

expand_moreCatalytic converter

expand_moreAt the turbocharger


Clamps	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
Use new parts.

expand_moreExhaust manifold

expand_moreCylinder 1, 4, 6, and 7

Figure 8. Exhaust system, Exhaust manifold, Cylinder 1, 4, 6, and 7.


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
See figure 8.
Second stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Third stage	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m

expand_moreCylinder 2, 3, 5, and 8

Figure 9. Exhaust system, Exhaust manifold, Cylinder 2, 3, 5, and 8.


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
See figure 9.
Second stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Third stage	23.6 lbf⋅ft23.6 lbf⋅ft32 N⋅m

expand_moreExhaust pipe

expand_moreOn catalytic converter


M8	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m


Exhaust pipe bracket	15.49 lbf⋅ft15.49 lbf⋅ft21 N⋅m

expand_moreIgnition system

expand_moreSpark plugs


M12	14.75–19.18 lbf⋅ft14.75–19.18 lbf⋅ft20–26 N⋅m
M14	19.91–24.34 lbf⋅ft19.91–24.34 lbf⋅ft27–33 N⋅m

expand_moreStart system

expand_moreStarter


M10	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2018 BMW 6 Series M6 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

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 6 Series M6 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 2018 BMW 6 Series M6 Coupe you're not only saving money, but also also improving your technical skills and learning something new.

BMW 6 Series M6 Coupe First generation second LCI model years

logo_bmw

2017
logo_bmw

2018

2018 BMW 6 Series M6 Coupe First generation second LCI Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 6 Series M6 Coupe First generation second LCI model years

Suggest edit