2003 Audi A4 Cabriolet engine fastener tightening specifications

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Condition	Value

expand_moreAir intake system

expand_moreIntake manifold


All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Gradually tighten screws crosswise.

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt deflection pulley


All Audi gasoline straight-4 1.8 L AMB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L BFB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAuxiliary drive belt tensioner


All Audi gasoline V6 2.4 L AMM engines	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreAll Audi gasoline V6 3.0 L BBJ engines


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M8	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m


All Audi gasoline V6 2.4 L BDV engines	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
All Audi gasoline straight-4 1.8 L BFB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m


Auxiliary drive belt tensioner	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Air-conditioning compressor	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAir-conditioning compressor bracket


All Audi gasoline V6 3.0 L ASN engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi gasoline V6 3.0 L BBJ engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 2.5 L BCZ engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 2.5 L BDG engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 2.5 L BFC engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All other modifications	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Use screw-locking compound.

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

expand_moreAlternator


All Audi gasoline straight-4 1.8 L AMB engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline straight-4 1.8 L BFB engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreAll other modifications


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


Power steering pump bracket	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Servo pump pulley	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreServo steering pump


All Audi gasoline straight-4 1.8 L AMB engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline straight-4 1.8 L BFB engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m


Tensioning device for air-conditioning compressor auxiliary drive belt	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreVacuum pump


All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreCarburetion


Exhaust recirculation pipe	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace seals and nuts.

expand_moreHigh-pressure pump drive wheel

expand_moreHigh-pressure pump pulley

expand_moreInjection hoses


All Audi diesel V6 2.5 L BCZ engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Audi diesel V6 2.5 L BDG engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Audi diesel V6 2.5 L BFC engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreInjection nozzle (injector)

expand_moreAll other modifications

expand_moreAt the cylinder head


Retaining clamp	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreInjection pump

expand_moreAll Audi diesel V6 2.5 L BCZ engines


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


Injection pump pulley	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Do not loosen the middle nut.

expand_moreCharging

expand_moreTurbo charger


All Audi gasoline straight-4 1.8 L AMB engines	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws.

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


On exhaust manifold	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws. Use hot screw paste.


All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace nuts.

expand_moreTurbocharger bracket

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


At the turbocharger	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
On the engine block	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreTurbocharger coolant feed line

expand_more1.8 T with gasoline straight-4 1.8 L 161 HP, 225 N⋅m at 1950 RPM engine (2002.7–2009.3)


Banjo screws	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m

expand_moreTurbocharger coolant return line

expand_more1.8 T with gasoline straight-4 1.8 L 161 HP, 225 N⋅m at 1950 RPM engine (2002.7–2009.3)


Union nuts	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreTurbocharger oil feed line

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


Banjo screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Union nuts	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll other modifications


At the oil filter	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.

expand_moreAt the turbocharger


Banjo screws	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Replace sealing rings.

expand_moreTurbocharger oil return line


All Audi gasoline straight-4 1.8 L BFB engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.

expand_moreAll other modifications


At the turbocharger	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace sealing rings.

expand_moreCooling system

expand_moreCoolant pump


All Audi gasoline V6 2.4 L AMM engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Audi gasoline V6 3.0 L ASN engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Audi gasoline V6 3.0 L BBJ engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Audi gasoline V6 2.4 L BDV engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All other modifications	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreCoolant pump pulley

expand_moreFan wheel


With twin fan	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Otherwise	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m

expand_moreViscous fan clutch


All Audi gasoline V6 2.4 L AMM engines	27.29 lbf⋅ft27.29 lbf⋅ft37 N⋅m
All Audi gasoline V6 2.4 L BDV engines	27.29 lbf⋅ft27.29 lbf⋅ft37 N⋅m

expand_moreAll other modifications


Screw 1	27.29 lbf⋅ft27.29 lbf⋅ft37 N⋅m
Torques applies only in combination with special tool.
Screw 2	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
Without special tool

expand_moreCylinder head

expand_moreCamshaft bearing

expand_moreAll Audi diesel V6 2.5 L BCZ engines


Cap nuts	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Otherwise	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
cross-wise from inside to outside


All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
First tighten bearing covers 2 and 4 alternately and in steps

expand_moreCylinder head screws


Third stage	90°90°90°

expand_moreAll Audi gasoline V6 2.4 L AMM engines


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

expand_moreAll Audi diesel V6 2.5 L BCZ engines


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Use new screws.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Fourth stage	90°90°90°

expand_moreAll other modifications


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreCylinder head screws shank length (new)


All Audi gasoline straight-4 1.8 L AMB engines	4.53 in4.53 in115 mm
All Audi gasoline V6 2.4 L AMM engines	5.24 in5.24 in133 mm
All Audi gasoline V6 3.0 L ASN engines	5 in5 in127 mm
All Audi gasoline V6 3.0 L BBJ engines	5 in5 in127 mm
All Audi gasoline V6 2.4 L BDV engines	5.24 in5.24 in133 mm
All Audi gasoline straight-4 1.8 L BFB engines	4.53 in4.53 in115 mm
All other modifications	6.1 in6.1 in155 mm

expand_moreRocker bridge


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Use new screws.
Second stage	90°90°90°


Valve cover	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
cross-wise from inside to outside

expand_moreEngine block

expand_moreBalance shaft gear wheel

expand_moreConnecting rod bearing

expand_moreAll Audi gasoline V6 2.4 L AMM engines

expand_moreCracked connecting rod (M8)


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

expand_moreCracked connecting rod (M8,5)


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreSawed connecting rod


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

expand_moreAll other modifications


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

expand_moreCrankshaft central screws

expand_moreAll Audi gasoline V6 2.4 L AMM engines


First stage	147.51 lbf⋅ft147.51 lbf⋅ft200 N⋅m
Replace bolt.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreAll Audi diesel V6 2.5 L BCZ engines


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

expand_moreAll other modifications


First stage	66.38 lbf⋅ft66.38 lbf⋅ft90 N⋅m
Use new screw.
Second stage	90°90°90°

expand_moreCrankshaft pulley


All Audi gasoline V6 2.4 L AMM engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline V6 3.0 L ASN engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi gasoline V6 3.0 L BBJ engines	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
All Audi diesel V6 2.5 L BCZ engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 2.5 L BDG engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline V6 2.4 L BDV engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 2.5 L BFC engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll other modifications


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreDrive plate

expand_more1.8 T with gasoline straight-4 1.8 L 161 HP, 225 N⋅m at 1950 RPM engine (2002.7–2009.3)


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

expand_moreEngine block closure screws


All Audi gasoline V6 2.4 L AMM engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Audi gasoline V6 3.0 L ASN engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V6 3.0 L BBJ engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V6 2.4 L BDV engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All other modifications	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Oil sump top part

expand_moreFlywheel

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines

expand_more22,5 mm screws


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

expand_more35 mm screws


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screw.
Second stage	180°180°180°

expand_more43 mm screws


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreAll other modifications

expand_more22,5 mm screws


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

expand_more35 mm screws


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Replace screws.
Second stage	180°180°180°

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_moreAll Audi gasoline straight-4 1.8 L AMB engines


First stage	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline V6 2.4 L AMM engines


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

expand_moreAll Audi gasoline V6 3.0 L BBJ engines


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Use new screws.
Second stage	90°90°90°
Tighten the screws cross-wise from inside to outside.

expand_moreLateral-fitting screw


Third stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Fourth stage	90°90°90°

expand_moreAll Audi diesel V6 2.5 L BCZ engines

expand_moreScrews 1 – 8


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

expand_moreScrews 9 – 16


Third stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Fourth stage	90°90°90°

expand_moreLateral-fitting screw


Fifth stage	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m

expand_moreAll Audi gasoline V6 2.4 L BDV engines


First stage	Tighten by hand
Use new screws.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
cross-wise from inside to outside
Third stage	90°90°90°

expand_moreLateral-fitting screw


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

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


First stage	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
Use new screws.
Second stage	90°90°90°

expand_moreAll other modifications


First stage	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreVibration damper

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	90°90°90°

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


First stage	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Replace screws.
Second stage	90°90°90°


All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine control

expand_moreBottom part of the control unit housing


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

expand_moreCamshaft drive belt deflection pulley


All Audi gasoline straight-4 1.8 L AMB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V6 2.4 L AMM engines	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
All Audi gasoline V6 2.4 L BDV engines	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
All Audi gasoline straight-4 1.8 L BFB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreCamshaft timing chain tensioner

expand_moreCamshaft timing gear

expand_moreAll Audi gasoline V6 2.4 L AMM engines


Left	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m
Right	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreAll Audi gasoline V6 3.0 L BBJ engines


Left	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
Right	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m

expand_moreAll Audi diesel V6 2.5 L BCZ engines


Central screws	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Wheel	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m


All other modifications	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreControl drive chain tensioner

expand_moreControl drive chain tensioning rail

expand_moreControl drive sprocket wheel

expand_moreControl drive timing chain slip rail

expand_moreDrive belt tensioner device


All Audi gasoline straight-4 1.8 L AMB engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreAll Audi diesel V6 2.5 L BCZ engines


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Otherwise	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m


All Audi gasoline straight-4 1.8 L BFB engines	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.

expand_moreHigh pressure pump belt deflection pulley


Injection pump drive belt tensioning roller	26.55 lbf⋅ft26.55 lbf⋅ft36 N⋅m

expand_moreInlet camshaft wheel


All Audi gasoline V6 3.0 L ASN engines	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
All Audi gasoline V6 3.0 L BBJ engines	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m

expand_moreOil pump drive chain tensioner


All Audi gasoline straight-4 1.8 L AMB engines	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m
do not dismantle
All Audi gasoline straight-4 1.8 L BFB engines	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m
do not dismantle
All other modifications	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreOutlet camshaft wheel


All Audi gasoline V6 3.0 L ASN engines	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m
All Audi gasoline V6 3.0 L BBJ engines	73.76 lbf⋅ft73.76 lbf⋅ft100 N⋅m

expand_moreTension rail bearing screws

expand_moreTiming case cover

expand_moreTiming case cover first cylinder row

expand_moreTiming case cover second cylinder row

expand_moreToothed belt guard


All Audi gasoline V6 2.4 L AMM engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.
All Audi gasoline V6 2.4 L BDV engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.

expand_moreAll other modifications


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.
M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


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

expand_moreToothed belt guard at the top


All Audi gasoline V6 3.0 L ASN engines	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
Replace screws.
All Audi gasoline V6 3.0 L BBJ engines	4.43 lbf⋅ft4.43 lbf⋅ft6 N⋅m
Replace screws.
All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


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

expand_moreToothed belt tensioning roller


All Audi gasoline straight-4 1.8 L AMB engines	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
All Audi gasoline V6 2.4 L AMM engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll Audi gasoline V6 3.0 L BBJ engines

expand_moreM10 × 65 screws


With tensioning roller eccentric	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreWith hydraulic tensioning device


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


All Audi diesel V6 2.5 L BCZ engines	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
All Audi diesel V6 2.5 L BDG engines	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
All Audi gasoline V6 2.4 L BDV engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline straight-4 1.8 L BFB engines	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
All Audi diesel V6 2.5 L BFC engines	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m

expand_moreEngine lubrication

expand_moreOil cooler


All Audi gasoline V6 2.4 L AMM engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Audi gasoline V6 3.0 L ASN engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All Audi gasoline V6 2.4 L BDV engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil drain plug


All Audi diesel V6 2.5 L BCZ engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi diesel V6 2.5 L BDG engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi diesel V6 2.5 L BFC engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOil filter housing

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines

expand_moreOn the engine block


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

expand_moreAll other modifications


Cap	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Otherwise	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Tighten cross-wise.

expand_moreOil lines

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines


Screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Union nuts	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


Screws	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Union nuts	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m


All other modifications	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m

expand_moreOil pump chain wheel


All Audi gasoline V6 2.4 L AMM engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi gasoline V6 3.0 L ASN engines


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Replace screws.
Second stage	90°90°90°


All Audi gasoline V6 2.4 L BDV engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreOil sump

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Gradually tighten screws crosswise.

expand_moreAll Audi gasoline V6 2.4 L AMM engines


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

expand_moreOil sump top part


M7	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll Audi gasoline V6 3.0 L ASN engines

expand_moreAt the gearbox


Oil sump top part	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m


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

expand_moreOn the engine block (M7)


Oil sump top part	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m

expand_moreOn the engine block (M8)


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

expand_moreAll Audi diesel V6 2.5 L BCZ engines

expand_moreAt the sealing flange (M6)


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

expand_moreAt the gearbox


Oil sump top part	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreM7


Oil sump top part	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m


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

expand_moreOn the engine block (M6)


Oil sump top part	9.59 lbf⋅ft9.59 lbf⋅ft13 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Gradually tighten screws crosswise.

expand_moreEngine management

expand_moreCamshaft sensor


All Audi gasoline V6 3.0 L ASN engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


Charge air pressure sensor	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
Crankshaft sensor	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Exhaust gas temperature sensor	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreGlow plugs


All other modifications	13.28 lbf⋅ft13.28 lbf⋅ft18 N⋅m


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

expand_moreEngine bracket


All other modifications	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
on the engine block

expand_moreEngine mounting

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines


At the crossmember	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Otherwise	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


At the crossmember	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Otherwise	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m


All other modifications	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m

expand_moreSubframe

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines


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_moreAll Audi gasoline straight-4 1.8 L BFB engines


M10	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Replace screws.

expand_moreM12


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

expand_moreSubframe stiffening plate


1.8 T with gasoline straight-4 1.8 L 161 HP, 225 N⋅m at 1950 RPM engine (2002.7–2009.3)	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreTorque arm

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M8	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll other modifications


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreExhaust system

expand_moreCatalytic converter


All Audi diesel V6 2.5 L BCZ engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi diesel V6 2.5 L BDG engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


At the turbocharger	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace seals and nuts.


All Audi diesel V6 2.5 L BFC engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


Diesel particulate filter	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Replace seals and nuts.

expand_moreExhaust manifold


All Audi gasoline straight-4 1.8 L AMB engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace nuts.
All Audi gasoline straight-4 1.8 L BFB engines	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace nuts.
All other modifications	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_morePrimary catalytic converter


All Audi diesel V6 2.5 L BCZ engines	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
Replace seals and nuts.
All Audi diesel V6 2.5 L BDG engines	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
Replace seals and nuts.
All Audi diesel V6 2.5 L BFC engines	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
Replace seals and nuts.

expand_moreFuel supply

expand_moreFuel filter bracket


All Audi diesel V6 2.5 L BCZ engines	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
All Audi diesel V6 2.5 L BDG engines	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
All Audi diesel V6 2.5 L BFC engines	3.69 lbf⋅ft3.69 lbf⋅ft5 N⋅m
All other modifications	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

expand_moreAll Audi gasoline straight-4 1.8 L AMB engines


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

expand_moreAll Audi gasoline straight-4 1.8 L BFB engines


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


All other modifications	33.19 lbf⋅ft33.19 lbf⋅ft45 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 Cabriolet 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 Cabriolet 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 Cabriolet you're not only saving money, but also also improving your technical skills and learning something new.

2003 Audi A4 Cabriolet B6 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Audi A4 Cabriolet B6 model years

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