1998 Audi A4 S4 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

expand_moreAuxiliary assemblies


Auxiliary drive belt deflection pulley	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
Auxiliary drive belt tensioner	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Air-conditioning compressor	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Air-conditioning compressor bracket	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Air-conditioning compressor pressure line	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Alternator	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Power steering pump bracket	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Servo pump pulley	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Servo steering pump	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreCharging


Turbo charger	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws and nuts.

expand_moreCooling system


Coolant pump	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreViscous fan bracket


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreViscous fan clutch


With a special tool	27.29 lbf⋅ft27.29 lbf⋅ft37 N⋅m
Without special tool	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m

expand_moreCylinder head


Camshaft bearing	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreCylinder head screws


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screws.
Second stage	90°90°90°
Third stage	90°90°90°


Cylinder head screws shank length (new)	5.24 in5.24 in133 mm
Valve cover	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace 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	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreFlywheel


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

expand_moreMain bearing

expand_moreScrews 1 – 16


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°

expand_moreLateral-fitting screw


Fourth stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreEngine control


Camshaft adjuster	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Camshaft drive belt deflection pulley	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreCamshaft timing chain tensioner


With camshaft adjuster	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


Camshaft timing gear	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreDrive belt tensioner device


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tensioning lever	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


Toothed belt guard	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.

expand_moreToothed belt tensioning roller


M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreEngine lubrication


Oil cooler	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Oil drain plug	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Oil lines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Oil pump chain wheel	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil sump

expand_moreM6


Oil sump lower part	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Gradually tighten screws crosswise.
Oil sump top part	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreM8


Oil sump top part	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreEngine management


Crankshaft sensor	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Lambda sensor	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m

expand_moreEngine mounting


Engine bracket	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreEngine mounting


M10	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreSubframe

expand_moreM10


With ribbing	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Replace screws.
Without ribbing	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws.

expand_moreM12 × 110 screws


First stage	81.13 lbf⋅ft81.13 lbf⋅ft110 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreSubframe stiffening plate

expand_moreM8 × 25 screws


Ribbed screw head.	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Otherwise	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m


Torque arm	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreExhaust system


Exhaust manifold	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.
Exhaust pipe	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace nuts.

expand_moreFuel supply


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

expand_moreIgnition system


Spark plugs	18.44 lbf⋅ft18.44 lbf⋅ft25 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 1998 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.

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 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 1998 Audi A4 S4 you're not only saving money, but also also improving your technical skills and learning something new.

1998 Audi A4 S4 B5 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Audi A4 S4 B5 model years

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