2003 Audi A6 RS6 Avant engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system


Intake manifold	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten the screws cross-wise from inside to outside.

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt deflection pulley


Bottom	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreM6


Top	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreTop


Central screws	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Use screw-locking compound.


Auxiliary drive belt tensioner	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
Air-conditioning compressor	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Air-conditioning compressor bracket	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Air-conditioning compressor pressure line	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAlternator


M10	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m


Servo pump pulley	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Servo steering pump	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreCharging


Turbo charger	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace nuts.

expand_moreCooling system


Coolant pump	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
Property class 10.9

expand_moreCylinder head

expand_moreCamshaft bearing


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreCylinder head screws

Figure 1. Cylinder head, Cylinder head screws.


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws. See figure 1.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°


Valve cover	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Alternately, first inside and then outside

expand_moreEngine block

expand_moreConnecting rod bearing


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreCrankshaft central screws


First stage	147.51 lbf⋅ft147.51 lbf⋅ft200 N⋅m
Use new screws.
Second stage	90°90°90°
Third stage	90°90°90°


Crankshaft pulley	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Engine block closure screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Oil sump top part

expand_moreFlywheel


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreMain bearing

expand_moreLateral-fitting screw


Fourth stage	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Fifth stage	90°90°90°

expand_moreNuts


First stage	Tighten by hand
Replace screws and nuts.
Second stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Third stage	90°90°90°


Vibration damper	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine control

expand_moreCamshaft adjuster


First stage	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage	90°90°90°


Camshaft drive belt deflection pulley	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreCamshaft timing gear


Left	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Use new screw.
Right	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Use new screw.


Drive belt tensioner device	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Oil pump drive chain tensioner	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Toothed belt guard	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.
Toothed belt tensioning roller	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreEngine lubrication


Oil cooler	2.95 lbf⋅ft2.95 lbf⋅ft4 N⋅m
Oil drain plug	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreOil lines

expand_moreBanjo screws


M12	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
M14	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreM6


Screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


Otherwise	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m


Oil pump chain wheel	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m

expand_moreOil sump

expand_moreAt the gearbox


Oil sump top part	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreM7


Oil sump top part	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m

expand_moreM8


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


Oil sump lower part	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Gradually tighten screws crosswise.

expand_moreEngine management


Knock sensor	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Lambda sensor	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreEngine mounting


Engine mounting	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreTorque arm


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreOn chassis


M8	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOn chassis (M12)


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreExhaust system


Exhaust manifold	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.
Exhaust pipe	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Replace nuts.
Exhaust pipe bracket	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreFuel supply


Fuel filter bracket	10.62 lbf⋅in10.62 lbf⋅in1.2 N⋅m

expand_moreIgnition system


Spark plugs	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreStart system

expand_moreStarter


M10	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M12	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Audi A6 RS6 Avant 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 Audi 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 Audi A6 RS6 Avant 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 2003 Audi A6 RS6 Avant you're not only saving money, but also also improving your technical skills and learning something new.

2003 Audi A6 RS6 Avant C5 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Audi A6 RS6 Avant C5 model years

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