expand_moreAir-conditioning compressor pressure line
M6
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Alternator
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreServo steering pump
M12
47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreCooling system
Coolant pump
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
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°
First tighten bearing covers 2 and 4 alternately and in steps
expand_moreCylinder head screws
First stage
22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws.
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
Tighten cross-wise.
expand_moreEngine block
expand_moreBalance shaft gear wheel
expand_moreLong
M10
30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
Auxiliary drive sprocket wheel
expand_moreShort
M10
45.73 lbf⋅ft45.73 lbf⋅ft62 N⋅m
Auxiliary drive pulley
expand_moreConnecting rod bearing
First stage
22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace and lightly oil the screws.
Second stage
90°90°90°
expand_moreCrankshaft pulley
First stage
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws.
Second stage
45°45°45°
Engine block closure screws
25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Oil sump top part
expand_moreFlywheel
expand_more22,5 mm screws
First stage
44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
Second stage
90°90°90°
expand_more43 mm screws
First stage
44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
Second stage
180°180°180°
expand_moreMain bearing
expand_moreM10
First stage
22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Tighten the screws cross-wise from inside to outside.
Third stage
36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
Use new screws.
Fifth stage
90°90°90°
expand_moreM6
Seventh stage
6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
Tighten cross-wise.
expand_moreM8
Second stage
14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Tighten the screws cross-wise from inside to outside.
Fourth stage
22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws.
Sixth stage
90°90°90°
expand_moreVibration damper
First stage
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace screws.
Second 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
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreCamshaft adjuster
expand_moreM6
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Timing case
Second stage
90°90°90°
Camshaft timing chain slip rail
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreCamshaft timing chain tensioner
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage
90°90°90°
Camshaft timing chain tensioning rail
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Control drive chain tensioner
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreControl drive sprocket wheel
M10
30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
expand_moreM6
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Use new screw.
Second stage
90°90°90°
Control drive timing chain slip rail
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Drive chain balance shaft tensioner
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Auxiliary drive chain tensioner
expand_moreInlet camshaft wheel
First stage
29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Replace screws.
Second stage
73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Third stage
90°90°90°
expand_moreOutlet camshaft wheel
First stage
29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Replace screws.
Second stage
73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Third stage
90°90°90°
Tension rail bearing screws
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
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 cooler
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Oil drain plug
36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
expand_moreOil filter housing
Cap
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
M6
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreOil sump
expand_moreOil sump lower part
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Tighten the screws crosswise.
Second stage
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Oil sump top part
11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
expand_moreEngine management
Camshaft sensor
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Lambda sensor
40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
expand_moreEngine mounting
expand_moreSubframe
First stage
81.13 lbf⋅ft81.13 lbf⋅ft110 N⋅m
Replace screws.
Second stage
90°90°90°
expand_moreExhaust system
Exhaust manifold
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace the nuts and use fitting paste
Exhaust pipe
19.91 lbf⋅ft19.91 lbf⋅ft27 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
Starter
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 2008 Audi A4 S4 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.
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 A4 S4 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 2008 Audi A4 S4 Avant you're not only saving money, but also also improving your technical skills and learning something new.
2008 Audi A4 S4 Avant generations
In 2008 Audi offered 2 generations of the A4 S4 Avant. Engine fastener tightening specifications may vary in different generations. Be sure that you are looking at the rigt modification.