1999 Audi A6 Avant Quattro engine fastener tightening specifications

in your garage to make future searches easy.

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

expand_moreAll Audi gasoline V8 4.2 L ARS engines


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.


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

expand_moreAuxiliary drive belt tensioner

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


AWT engine	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Otherwise	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Audi diesel V6 2.5 L AFB engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 2.5 L AKN engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline V8 3.7 L AQG engines	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
All Audi gasoline V8 4.2 L ARS engines	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
All Audi gasoline V8 4.2 L AWN engines	31.72 lbf⋅ft31.72 lbf⋅ft43 N⋅m
All other modifications	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m


Auxiliary drive belt tensioner	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAir-conditioning compressor


All Audi diesel V6 2.5 L AFB engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi diesel V6 2.5 L AKN engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline V8 4.2 L ARS engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline V8 4.2 L AWN engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAir-conditioning compressor bracket


All Audi gasoline V8 4.2 L ARS engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi gasoline V8 4.2 L AWN engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


Air-conditioning compressor pressure line	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAlternator

expand_moreAll Audi gasoline straight-4 1.8 L AEB 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 V8 4.2 L ARS 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	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M8	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m


Power steering pump bracket	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Servo pump pulley	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Servo steering pump	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreTensioning device for air-conditioning compressor auxiliary drive belt


All Audi diesel V6 2.5 L AFB engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
All Audi gasoline straight-4 1.8 L AJL engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi diesel V6 2.5 L AKN engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreAll other modifications


AWT engine	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Otherwise	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


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

expand_moreCarburetion


Injection hoses	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreInjection nozzle (injector)

expand_moreAt the cylinder head


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

expand_moreInjection pump


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreOn the engine block


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


Charge air pipes	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreTurbo charger


All Audi diesel V6 2.5 L AFB engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace nuts.
All Audi gasoline V6 2.7 L AJK engines	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
All Audi diesel V6 2.5 L AKN engines	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m
Replace nuts.
All Audi gasoline V6 2.7 L AZA engines	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m

expand_moreAll other modifications


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

expand_moreTurbocharger bracket

expand_moreAll Audi gasoline straight-4 1.8 L AJL engines


At the turbocharger	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
On the engine block	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreAll other modifications

expand_moreAEB, ANB, APU, and ARK engines


At the turbocharger	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
On the engine block	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreAWT engine


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_moreAEB, AJL, ANB, APU, and ARK engines


Banjo screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAWT engine


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

expand_moreTurbocharger coolant return line


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

expand_moreTurbocharger oil feed line

expand_moreAll Audi diesel V6 2.5 L AFB engines


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_moreAll Audi gasoline straight-4 1.8 L AJL engines


Union nuts	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll other modifications

expand_moreAEB, ANB, APU, and ARK engines


Union nuts	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAWT engine


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

expand_moreTurbocharger oil return line


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

expand_moreCooling system

expand_moreCoolant pump

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


AWT engine	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Otherwise	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Audi gasoline straight-4 1.8 L AJL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V8 4.2 L ARS engines	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
Property class 10.9
All Audi gasoline straight-8 4.2 L ASG engines	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
Property class 10.9
All Audi gasoline V8 4.2 L AWN engines	10.33 lbf⋅ft10.33 lbf⋅ft14 N⋅m
Property class 10.9
All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m


Coolant pump pulley	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Fan wheel	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

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


Belt pulley	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Fan at bearing
M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Fan clutch at belt pulley

expand_moreAll Audi diesel V6 2.5 L AFB engines


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


All Audi gasoline V6 2.7 L AJK engines	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
All Audi gasoline V8 4.2 L ARS engines	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
All Audi gasoline V8 4.2 L AWN engines	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
All Audi gasoline V6 2.7 L AZA engines	51.63 lbf⋅ft51.63 lbf⋅ft70 N⋅m
All other modifications	27.29 lbf⋅ft27.29 lbf⋅ft37 N⋅m
Torques applies only in combination with special tool.

expand_moreCylinder head

expand_moreCamshaft bearing

expand_moreAll Audi diesel V6 2.5 L AFB engines


Nuts	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Screws	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll Audi gasoline V8 4.2 L ARS engines


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


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

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines

Figure 1. Cylinder head, Cylinder head screws, Audi gasoline straight-4 1.8 L AEB.


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

expand_moreAWT engine

Figure 2. Cylinder head, Cylinder head screws, Audi gasoline straight-4 1.8 L AEB, AWT engine.


First stage	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
Use new screws. See figure 2.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreAll Audi diesel V6 2.5 L AFB engines

Figure 3. Cylinder head, Cylinder head screws, Audi diesel V6 2.5 L AFB.


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Use new screws. See figure 3.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreAll Audi gasoline V8 3.7 L AQG engines

Figure 4. Cylinder head, Cylinder head screws, Audi gasoline V8 3.7 L AQG.


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Replace screws. See figure 4.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreAll Audi gasoline V8 4.2 L ARS engines

Figure 5. Cylinder head, Cylinder head screws, Audi gasoline V8 4.2 L ARS.


First stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Use new screws. See figure 5.
Second stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Third stage	90°90°90°
Fourth stage	90°90°90°

expand_moreAll other modifications

Figure 6. Cylinder head, Cylinder head screws, All other modifications.


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screws. See figure 6.
Second stage	90°90°90°
Third stage	90°90°90°

expand_moreCylinder head screws shank length (new)

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


AWT engine	4.53 in4.53 in115 mm
Otherwise	3.78 in3.78 in96 mm


All Audi diesel V6 2.5 L AFB engines	6.1 in6.1 in155 mm
All Audi gasoline straight-4 1.8 L AJL engines	3.78 in3.78 in96 mm
All Audi diesel V6 2.5 L AKN engines	6.1 in6.1 in155 mm
All other modifications	5.24 in5.24 in133 mm

expand_moreRocker bridge


3.7 quattro with gasoline V8 3.7 L 256 HP at 6000 RPM, 350 N⋅m at 3250 RPM engine (1999.3–2005.1)	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m


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

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


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

expand_moreAll Audi diesel V6 2.5 L AFB engines


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

expand_moreAll Audi gasoline straight-4 1.8 L AJL engines


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace screws and nuts.
Second stage	90°90°90°

expand_moreAll Audi gasoline V8 3.7 L AQG engines


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

expand_moreAll Audi gasoline V8 4.2 L ARS engines


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

expand_moreAll other modifications

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_moreCrankshaft central screws

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


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

expand_moreAll Audi gasoline V8 3.7 L AQG engines


First stage	147.51 lbf⋅ft147.51 lbf⋅ft200 N⋅m
Replace screws.
Second stage	180°180°180°

expand_moreAll other modifications


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

expand_moreCrankshaft pulley

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


Class 10.9	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreClass 8.8 screws


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


All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreDrive plate

expand_more3.7 quattro with gasoline V8 3.7 L 256 HP at 6000 RPM, 350 N⋅m at 3250 RPM engine (1999.3–2005.1)


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

expand_moreEngine block closure screws


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

expand_moreFlywheel

expand_moreAll Audi gasoline V6 2.4 L AJG 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
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_moreAll Audi gasoline V6 2.7 L AJK engines


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

expand_moreDual-mass flywheel


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

expand_moreAll Audi gasoline V6 2.4 L APC 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
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_moreAll Audi gasoline V8 4.2 L ARS engines


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

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_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 AEB engines


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

expand_moreAll Audi diesel V6 2.5 L AFB engines

expand_moreScrews 1 – 8

Figure 7. Engine block, Main bearing, Audi diesel V6 2.5 L AFB, Screws 1 – 8.


First stage	44.25 lbf⋅ft44.25 lbf⋅ft60 N⋅m
Use new screws. See figure 7.
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 2.7 L AJK engines

expand_moreScrews 1 – 16


First stage	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Use new screws. See figure 7.
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_moreAll Audi gasoline straight-4 1.8 L AJL engines


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

expand_moreAll Audi gasoline V8 4.2 L ARS engines

expand_moreNuts


First stage	Tighten by hand
Replace screws and nuts.
Second stage	25.81 lbf⋅ft25.81 lbf⋅ft35 N⋅m
Tighten the screws cross-wise from inside to outside.
Third stage	90°90°90°

expand_moreLateral-fitting screw


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

expand_moreAll other modifications


First stage	Tighten by hand
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_moreVibration damper

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


Class 10.9	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreClass 8.8 screws


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

expand_moreAll Audi gasoline V6 2.7 L AJK engines

expand_moreOn crankshaft


First stage	147.51 lbf⋅ft147.51 lbf⋅ft200 N⋅m
Replace screws.
Second stage	180°180°180°


Otherwise	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L AJL engines


Class 10.9	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreClass 8.8 screws


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_moreCamshaft adjuster

expand_moreAll Audi gasoline V8 4.2 L ARS engines


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


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

expand_moreCamshaft drive belt deflection pulley


All Audi gasoline straight-4 1.8 L AEB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L AJL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L ANB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L APU engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L ARK engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L AWT 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 gear


All Audi gasoline straight-4 1.8 L AEB engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreAll Audi diesel V6 2.5 L AFB engines


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


All Audi gasoline straight-4 1.8 L AJL engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All Audi gasoline straight-4 1.8 L ANB engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All Audi gasoline straight-4 1.8 L APU engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All Audi gasoline straight-4 1.8 L ARK engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All Audi gasoline straight-4 1.8 L AWT engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All other modifications	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreDrive belt tensioner device


All Audi gasoline straight-4 1.8 L AEB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi diesel V6 2.5 L AFB 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 AJL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L ANB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L APU engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll Audi gasoline V8 3.7 L AQG engines


First stage	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
Second stage	90°90°90°
Tensioning roller	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m


All Audi gasoline straight-4 1.8 L ARK engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V8 4.2 L ARS engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline V8 4.2 L AWN engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi gasoline straight-4 1.8 L AWT engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.


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

expand_moreOil pump drive chain tensioner


All Audi gasoline V8 4.2 L ARS engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Audi gasoline V8 4.2 L AWN engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll other modifications


AWT engine	11.8 lbf⋅ft11.8 lbf⋅ft16 N⋅m
do not dismantle


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

expand_moreToothed belt guard at the bottom

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


AWT engine	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.
M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
M8	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m


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


Toothed belt guard at the top	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use new screws.

expand_moreToothed belt guard center


AWT engine	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Use screw-locking compound.

expand_moreToothed belt tensioning roller

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


AWT engine	19.91 lbf⋅ft19.91 lbf⋅ft27 N⋅m
M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Nuts	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Audi diesel V6 2.5 L AFB engines	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L AJL engines


M10	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Nuts	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Screws	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m


All Audi diesel V6 2.5 L AKN engines	30.98 lbf⋅ft30.98 lbf⋅ft42 N⋅m
All Audi gasoline V8 3.7 L AQG engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi gasoline V8 4.2 L ARS engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All Audi gasoline V8 4.2 L AWN engines	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m
All other modifications	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreToothed belt tightener


All Audi gasoline V8 3.7 L AQG engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All other modifications	16.23 lbf⋅ft16.23 lbf⋅ft22 N⋅m

expand_moreEngine lubrication

expand_moreOil cooler


All Audi gasoline straight-4 1.8 L AEB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi diesel V6 2.5 L AFB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L AJL engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi diesel V6 2.5 L AKN engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L ANB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L APU engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L ARK engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L AWT engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m


Oil cooler lines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m

expand_moreOil drain plug

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


AWT engine	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Otherwise	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m


All Audi diesel V6 2.5 L AFB engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline straight-4 1.8 L AJL engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All Audi diesel V6 2.5 L AKN engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V8 3.7 L AQG engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All Audi gasoline V8 4.2 L ARS engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All Audi gasoline V8 4.2 L AWN engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreOil filter housing


All Audi gasoline V8 4.2 L ARS engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi gasoline V8 4.2 L AWN engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

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 diesel V6 2.5 L AFB engines


Banjo screws	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreAll Audi gasoline straight-4 1.8 L AJL engines


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Union nuts	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreAll other modifications


Union nuts	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
Otherwise	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreOil pump chain wheel


All Audi gasoline V6 2.7 L AJK engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V8 4.2 L ARS engines	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
All Audi gasoline V8 4.2 L AWN engines	25.08 lbf⋅ft25.08 lbf⋅ft34 N⋅m
All Audi gasoline V6 2.7 L AZA 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 AEB engines


M10	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Gradually tighten screws crosswise.
M7	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
Gradually tighten screws crosswise.

expand_moreAll Audi diesel V6 2.5 L AFB 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


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_moreOn the engine block (M7)


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

expand_moreAll Audi gasoline V6 2.7 L AJK engines

expand_moreM6


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


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

expand_moreAll Audi gasoline V8 4.2 L ARS engines

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_moreAll other modifications

expand_moreM6


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

expand_moreM7


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

expand_moreCharge air pressure sensor


All Audi diesel V6 2.5 L AFB engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
All Audi diesel V6 2.5 L AKN engines	6.64 lbf⋅ft6.64 lbf⋅ft9 N⋅m
All other modifications	2.21 lbf⋅ft2.21 lbf⋅ft3 N⋅m


Crankshaft sensor	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
Glow plugs	13.28 lbf⋅ft13.28 lbf⋅ft18 N⋅m
Knock sensor	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m

expand_moreLambda sensor


All Audi gasoline V6 2.7 L AJK engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All Audi gasoline V6 2.7 L AZA engines	36.88 lbf⋅ft36.88 lbf⋅ft50 N⋅m
All other modifications	40.57 lbf⋅ft40.57 lbf⋅ft55 N⋅m

expand_moreEngine mounting


Engine bracket	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
on the engine block

expand_moreEngine mounting


All Audi diesel V6 2.5 L AFB engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All Audi diesel V6 2.5 L AKN engines	14.75 lbf⋅ft14.75 lbf⋅ft20 N⋅m
All other modifications	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m

expand_moreSubframe

expand_moreRear


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

expand_moreSubframe stiffening plate

expand_moreRibbed nuts

expand_moreRibbed screw head.


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


Ribbed screw head.	55.32 lbf⋅ft55.32 lbf⋅ft75 N⋅m
Replace bolts.
Otherwise	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace bolts.

expand_moreTorque arm


All Audi gasoline straight-4 1.8 L AEB engines	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
All Audi diesel V6 2.5 L AFB engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi gasoline V6 2.7 L AJK engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi gasoline straight-4 1.8 L AJL engines	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
All Audi diesel V6 2.5 L AKN engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m
All Audi gasoline straight-4 1.8 L ANB engines	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
All Audi gasoline straight-4 1.8 L APU engines	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
All Audi gasoline straight-4 1.8 L ARK engines	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
All Audi gasoline straight-4 1.8 L AWT engines	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
All Audi gasoline V6 2.7 L AZA engines	33.19 lbf⋅ft33.19 lbf⋅ft45 N⋅m

expand_moreAll other modifications


At the crossmember	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m
On the engine block	29.5 lbf⋅ft29.5 lbf⋅ft40 N⋅m

expand_moreExhaust system

expand_moreCatalytic converter


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

expand_moreAll other modifications


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

expand_moreExhaust manifold

expand_moreAll Audi gasoline straight-4 1.8 L AEB engines


AWT engine	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m
Replace nuts.
Otherwise	18.44 lbf⋅ft18.44 lbf⋅ft25 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	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.
Exhaust pipe bracket	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace nuts.
Primary catalytic converter	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Replace seals and nuts.

expand_moreFuel supply

expand_moreFuel filter bracket


All Audi diesel V6 2.5 L AFB engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All Audi diesel V6 2.5 L AKN engines	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m
All other modifications	1.48 lbf⋅ft1.48 lbf⋅ft2 N⋅m

expand_moreFuel lines

expand_moreBanjo screws


M12	16.96 lbf⋅ft16.96 lbf⋅ft23 N⋅m
M14	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreIgnition system

expand_moreSpark plugs


All Audi gasoline V6 2.7 L AJK engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All Audi gasoline V6 2.7 L AZA engines	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
All other modifications	22.13 lbf⋅ft22.13 lbf⋅ft30 N⋅m

expand_moreStart system

expand_moreStarter


All Audi gasoline V8 4.2 L ARS engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All Audi gasoline straight-8 4.2 L ASG engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m
All Audi gasoline V8 4.2 L AWN engines	47.94 lbf⋅ft47.94 lbf⋅ft65 N⋅m

expand_moreAll other modifications


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 1999 Audi A6 Avant Quattro 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 Avant Quattro 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 1999 Audi A6 Avant Quattro you're not only saving money, but also also improving your technical skills and learning something new.

1999 Audi A6 Avant Quattro C5 Engine Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Audi A6 Avant Quattro C5 model years

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