2004 BMW 6 Series Sedan engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP


Inlet camshaft	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Replace aluminum screws.

expand_moreOutlet camshaft


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace aluminum screws.
Second stage	60°60°60°
Install bearing using special tool.

expand_moreBMW gasoline V8 4.4 L N62 B44 A 329 HP


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreCylinder head screws

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP

expand_moreMagnesium valve cover

expand_moreScrews 1 – 14

Figure 1. Cylinder head, Cylinder head screws, BMW gasoline straight-6 3.0 L N52 B30 A 255 HP, Magnesium valve cover, Screws 1 – 14.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws. See figure 1.
Second stage	90°90°90°
Fourth stage	45°45°45°

expand_moreScrews 1 – 10


Third stage	90°90°90°

expand_moreScrews 15 – 18


Fifth stage	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace screws.
Sixth stage	90°90°90°

expand_morePlastic valve cover

expand_moreScrews 1 – 14


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws. See figure 1.
Second stage	90°90°90°
Fourth stage	45°45°45°

expand_moreScrews 1 – 10


Third stage	90°90°90°

expand_moreScrews 15 – 18


Fifth stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.

expand_moreScrews 15 – 17


Sixth stage	90°90°90°

expand_moreScrew 18


Seventh stage	135°135°135°

expand_moreBMW gasoline V8 4.4 L N62 B44 A 329 HP

Figure 2. Cylinder head, Cylinder head screws, BMW gasoline V8 4.4 L N62 B44 A 329 HP.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
See figure 2.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreValve cover

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP

expand_moreMagnesium valve cover


First stage	5.16 lbf⋅ft5.16 lbf⋅ft7 N⋅m
Replace screws.
Second stage	90°90°90°


Plastic valve cover	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreAll other modifications


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screw, wash and slightly oil.
Second stage	120°120°120°

expand_moreCrankshaft central screws

expand_moreBMW gasoline V8 4.4 L N62 B44 A 329 HP


First stage	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Replace bolt.
Second stage	60°60°60°
Third stage	60°60°60°
Fourth stage	60°60°60°

expand_moreDrive plate

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP

expand_moreN52 engine


Magnesium valve cover	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Replace screws.

expand_morePlastic valve cover screws of N52 engine


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.
Second stage	92.2 lbf⋅ft92.2 lbf⋅ft125 N⋅m


BMW gasoline V8 4.4 L N62 B44 A 329 HP	77.44 lbf⋅ft77.44 lbf⋅ft105 N⋅m
Replace screws.

expand_moreFlywheel

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP


N52 engine	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Replace screws.


BMW gasoline V8 4.4 L N62 B44 A 329 HP	88.51 lbf⋅ft88.51 lbf⋅ft120 N⋅m
Lightly lubricate the screws thread.

expand_moreMain bearing

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP

expand_moreM10 × 100 screws


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

expand_moreM10 × 27 screws


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

expand_moreM10 × 41 screws


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

expand_moreM8 × 37 screws


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

expand_moreVibration damper

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP


M8 × 16 screws (class 10.9)	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
M8 × 20 screws (class 8.8)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreEngine control

expand_moreCamshaft timing chain guide rail

expand_moreAll BMW gasoline straight-6 3.0 L N52 B30 A engines

expand_moreBearing screws


M7	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m

expand_moreM18


Cap	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreCamshaft timing chain slip rail

expand_more630 i with gasoline straight-6 3.0 L 255 HP engine (2004.9–2010.7)

expand_moreAt the cylinder head


M6 × 35 screws	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m

expand_moreCamshaft timing chain tensioner

expand_more630 i with gasoline straight-6 3.0 L 255 HP engine (2004.9–2010.7)

expand_moreN52 engine


Magnesium valve cover	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace sealing rings.
Plastic valve cover	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Replace sealing rings.

expand_moreCamshaft timing chain tensioning rail

expand_more630 i with gasoline straight-6 3.0 L 255 HP engine (2004.9–2010.7)

expand_moreBearing screws


M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreM22


Cap	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreCamshaft timing gear


645 Ci with gasoline V8 4.4 L 329 HP engine (2004.1–2005.8)	59 lbf⋅ft59 lbf⋅ft80 N⋅m
Replace bolt.

expand_moreChain tensioner

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP


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

expand_moreBMW gasoline V8 4.4 L N62 B44 A 329 HP


Cap	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Chain tensioner	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreInlet camshaft wheel

expand_moreAll BMW gasoline straight-6 3.0 L N52 B30 A engines

expand_moreM10


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Use new screw.
Second stage	180°180°180°

expand_moreOutlet camshaft wheel

expand_moreAll BMW gasoline straight-6 3.0 L N52 B30 A engines

expand_moreM10


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Use new screw.
Second stage	180°180°180°

expand_moreEngine lubrication

expand_moreOil drain plug


BMW gasoline straight-6 3.0 L N52 B30 A 255 HP	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
BMW gasoline V8 4.4 L N62 B44 A 329 HP	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreOil filter housing


645 Ci with gasoline V8 4.4 L 329 HP engine (2004.1–2005.8)	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil sump

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP


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

expand_moreM8 × 112 and M8 × 92 screws


First stage	5.9 lbf⋅ft5.9 lbf⋅ft8 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreBMW gasoline V8 4.4 L N62 B44 A 329 HP

expand_moreOil sump top part M6 screws (class 10.9)


Oil sump lower part	8.85 lbf⋅ft8.85 lbf⋅ft12 N⋅m

expand_moreOil sump top part M6 screws (class 8.8)


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

expand_moreOil sump top part M8 screws (class 8.8)


Oil sump lower part	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine management

expand_moreKnock sensor


BMW gasoline straight-6 3.0 L N52 B30 A 255 HP	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


Lambda sensor	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold

expand_moreBMW gasoline straight-6 3.0 L N52 B30 A 255 HP


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace nuts.
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace nuts.
M8	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts.

expand_moreBMW gasoline V8 4.4 L N62 B44 A 329 HP


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace nuts.
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace nuts.
M8	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace nuts.

expand_moreIgnition system

expand_moreSpark plugs


BMW gasoline straight-6 3.0 L N52 B30 A 255 HP	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
BMW gasoline V8 4.4 L N62 B44 A 329 HP	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2004 BMW 6 Series Sedan 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 Sedan 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 2004 BMW 6 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.

2004 BMW 6 Series Sedan Second generation Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

BMW 6 Series Sedan Second generation model years

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