S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Gradually tighten screws crosswise.
expand_moreAuxiliary assemblies
expand_moreAuxiliary drive belt deflection pulley
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreAuxiliary drive belt tensioner
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreAir-conditioning compressor
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
expand_moreAir-conditioning compressor pressure line
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
M6
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
expand_moreAlternator
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreServo steering pump
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
M12
47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreCooling system
expand_moreCoolant pump
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreCylinder head
expand_moreCamshaft bearing
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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°
expand_moreValve cover
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
cross-wise from inside to outside
expand_moreEngine block
expand_moreConnecting rod bearing
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
First stage
22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws.
Second stage
90°90°90°
expand_moreFlywheel
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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_moreVibration damper
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
M6
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8
16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
expand_moreCamshaft timing chain slip rail
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreCamshaft timing chain tensioner
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
First stage
3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Replace screws.
Second stage
90°90°90°
expand_moreControl drive chain tensioner
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreControl drive sprocket wheel
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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°
expand_moreControl drive timing chain slip rail
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreInlet camshaft wheel
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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_moreTension rail bearing screws
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreTiming case cover first cylinder row
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreTiming case cover second cylinder row
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreEngine lubrication
expand_moreOil cooler
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreOil drain plug
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
expand_moreOil filter housing
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
Oil sump lower part
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten the screws crosswise.
Oil sump top part
11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
expand_moreEngine management
expand_moreCrankshaft sensor
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
expand_moreLambda sensor
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
expand_moreEngine mounting
expand_moreEngine mounting
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
expand_moreSubframe
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
M10 × 70 screws
55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Replace screws.
expand_moreM12 × 110 screws
First stage
81.13 lbf⋅ft81.13 lbf⋅ft110 N⋅m
Use new screw.
Second stage
90°90°90°
expand_moreTorque arm
expand_moreS4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
M10
30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
M8
20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
expand_moreExhaust system
expand_moreExhaust manifold
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.
expand_moreExhaust pipe
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
Replace nuts.
expand_moreExhaust pipe bracket
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
expand_moreFuel supply
expand_moreFuel filter bracket
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
10.62 lbf⋅in10.62 lbf⋅in1.2 N⋅m
expand_moreIgnition system
expand_moreSpark plugs
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
expand_moreStart system
expand_moreStarter
S4 quattro with gasoline V8 4.2 L 339 HP, 410 N⋅m at 3500 RPM engine (2003.3–2004.12)
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 A4 S4 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 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 A4 S4 you're not only saving money, but also also improving your technical skills and learning something new.