2025 BMW 2 Series M2 Convertible engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Figure 1. Air intake system, Intake manifold.
Second stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
See figure 1.

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt tensioner

expand_moreAll-wheel drive


M10	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m


Rear wheel drive	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreAir-conditioning compressor bracket


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreAlternator


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreGenerator bracket

expand_moreM 235 i xDrive with gasoline straight-6 3.0 L 322 HP engine (2015.7–)


M8	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreCarburetion

expand_moreFuel-distributing pipe

expand_moreM 235 i xDrive with gasoline straight-6 3.0 L 322 HP engine (2015.7–)


M7	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m

expand_moreHigh-pressure line


M14	19.91–24.34 lbf⋅ft19.91–24.34 lbf⋅ft27–33 N⋅m

expand_moreHigh-pressure pump

expand_moreManufacturer Bosch


M6	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m

expand_moreManufacturer Continental


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreInjection hoses


M12	14.75–19.18 lbf⋅ft14.75–19.18 lbf⋅ft20–26 N⋅m


Injection nozzle (injector)	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m

expand_moreCharging

expand_moreTurbo charger

expand_moreAt the cylinder head


M7	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m
Replace nuts.

expand_moreTurbocharger oil feed line

expand_moreM 235 i xDrive with gasoline straight-6 3.0 L 322 HP engine (2015.7–)


M6	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreTurbocharger oil return line

expand_moreM 235 i xDrive with gasoline straight-6 3.0 L 322 HP engine (2015.7–)


M6	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreCooling system

expand_moreCoolant drain plug


M14 × 1,5 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace sealing rings and screws.

expand_moreCoolant pump

expand_moreM8 × 26 screws


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	90°90°90°


Viscous fan clutch	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Left-hand thread

expand_moreCylinder head

expand_moreCamshaft bearing


Inlet camshaft	6.27 lbf⋅ft6.27 lbf⋅ft8.5 N⋅m

expand_moreOutlet camshaft

Figure 2. Cylinder head, Camshaft bearing, Outlet camshaft.


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Note correct order of tensioning. See figure 2.
Second stage	60°60°60°

expand_moreCylinder head screws

expand_moreScrews 1 – 10

Figure 3. Cylinder head, Cylinder head screws, Screws 1 – 10.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws. See figure 3.
Third stage	90°90°90°
Fifth stage	180°180°180°

expand_moreScrews 11 – 14


Second stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.
Fourth stage	90°90°90°
Sixth stage	180°180°180°

expand_moreScrews 15 – 18


Seventh stage	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreValve cover

expand_moreAll-wheel drive

Figure 4. Cylinder head, Valve cover, All-wheel drive.


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Note correct order of tensioning. See figure 4.


Rear wheel drive	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Note correct order of tensioning. See figure 4.

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreM9


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace, wash and lightly lubricate the screws.
Second stage	70°70°70°
Third stage	70°70°70°

expand_moreCrankshaft central screws

expand_moreM18 central screw (class 12.9)


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Replace screws.
Second stage	270°270°270°

expand_moreDrive plate

expand_moreM12


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace bolts.
Second stage	45°45°45°

expand_moreEngine block closure screws


M18 × 1,5 screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreMain bearing

expand_moreScrews 1 – 14 (M10 × 100)

Figure 5. Engine block, Main bearing, Screws 1 – 14 (M10 × 100).


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws. See figure 5.
Second stage	70°70°70°

expand_moreM10 × 27 screw 15


Third stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace screws.
Fourth stage	90°90°90°

expand_moreM10 × 41 screw 15


Third stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace screws.
Fourth stage	90°90°90°

expand_moreScrew 15 (M8 × 37)


Third stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Fourth stage	90°90°90°

expand_moreVibration damper

expand_moreClass 10.9


M8 × 16 screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreEngine control

expand_moreCamshaft timing chain guide rail


M7	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m

expand_moreCamshaft timing chain tensioner


M22 × 1,5 screws	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Replace sealing rings.

expand_moreEccentric shaft for intake valve timing

expand_moreBearing cap at the cylinder head


M6	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreInlet camshaft wheel

expand_moreM10 central screws


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

expand_moreOutlet camshaft wheel

expand_moreM10 central screws


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

expand_moreEngine lubrication

expand_moreOil cooler


M8	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m

expand_moreOil drain plug


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

expand_moreOil filter


Oil filter cover	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Slightly oil sealing lips.

expand_moreOil filter housing

expand_moreAt the cylinder head


M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreOil pump

expand_moreM8 × 123 screws


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreM8 × 31 screws


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreM8 × 37 screws


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreOil pump chain wheel

expand_moreM8


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

expand_moreOil sump

expand_moreM 235 i xDrive with gasoline straight-6 3.0 L 322 HP engine (2015.7–)

expand_moreAluminium oil sump (M8 × 36)


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreEngine management

expand_moreCamshaft sensor


M6	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m


Crankshaft sensor	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m

expand_moreKnock sensor


M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreLambda sensor


M18 × 1,5 screws	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreEngine mounting

expand_moreEngine bracket

expand_moreOn the engine block


M10 screws (class 8.8)	28.03 lbf⋅ft28.03 lbf⋅ft38 N⋅m

expand_moreEngine mounting

expand_moreAt the subframe


M8 screws (class 8.8)	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m

expand_moreOn engine mounting


M10	41.3 lbf⋅ft41.3 lbf⋅ft56 N⋅m

expand_moreSubframe


M12	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
M14	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m

expand_moreSubframe stiffening plate


First stage	41.3 lbf⋅ft41.3 lbf⋅ft56 N⋅m
Replace screws.
Second stage	60°60°60°

expand_moreExhaust system

expand_moreCatalytic converter

expand_moreM8


At the bracket	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m


Exhaust manifold heat shields	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Exhaust pipe bracket	14.01 lbf⋅ft14.01 lbf⋅ft19 N⋅m
Replace screws.
Exhaust system middle heat protection plate	7.38 lbf⋅ft7.38 lbf⋅ft10 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 2025 BMW 2 Series M2 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 2 Series M2 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 2025 BMW 2 Series M2 Convertible you're not only saving money, but also also improving your technical skills and learning something new.

2025 BMW 2 Series M2 Convertible First generation Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 2 Series M2 Convertible First generation model years

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