in your garage to make future searches easy.

Condition Value
expand_moreRear axle brake
expand_moreRear axle bleeder valve
All Audi gasoline V8 3.7 L AQG engines 7.38 lbf⋅ft
All Audi gasoline V8 4.2 L ARS engines 7.38 lbf⋅ft
All Audi gasoline straight-8 4.2 L ASG engines 7.38 lbf⋅ft
All Audi gasoline V8 4.2 L AWN engines 7.38 lbf⋅ft
expand_moreAll other modifications
C38 brake calipers 7.38 lbf⋅ft
C43 brake calipers 7.38 lbf⋅ft
Rear axle brake caliper 22.13 lbf⋅ft
Use new screws.
expand_moreRear axle brake caliper mounting support
expand_moreAll Audi gasoline V8 3.7 L AQG engines
M10 × 20 screws 70.07 lbf⋅ft
expand_moreM10 × 50 screws
First stage 51.63 lbf⋅ft
Use new screws.
Second stage 90°
expand_moreAll Audi gasoline V8 4.2 L ARS engines
M10 × 20 screws 70.07 lbf⋅ft
expand_moreM10 × 50 screws
First stage 51.63 lbf⋅ft
Use new screws.
Second stage 90°
expand_moreAll other modifications
C38 brake calipers 70.07 lbf⋅ft
expand_moreM10 × 20 screws
C43 brake calipers 70.07 lbf⋅ft
expand_moreM10 × 50 screws first stage
C43 brake calipers 51.63 lbf⋅ft
expand_moreM10 × 50 screws second stage
C43 brake calipers 90°
expand_moreRear axle brake hose
expand_moreAt the brake caliper
C38 brake calipers 33.19 lbf⋅ft
C43 brake calipers 29.5 lbf⋅ft
expand_moreRear axle steering
expand_moreRear axle track rod
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)
At the subframe 73.76 lbf⋅ft
Replace nuts.
expand_moreOn stub axle
Aluminium stub axle 81.13 lbf⋅ft
Replace nuts.
Steel stub axle 66.38 lbf⋅ft
Replace nuts.
expand_moreRear axle suspension
expand_moreRear axle shock absorber
expand_moreBottom
First stage 36.88 lbf⋅ft
Replace screws and nuts.
Second stage 90°
Top 33.19 lbf⋅ft
Rear axle shock absorber piston rod 19.91 lbf⋅ft
expand_moreRear axle suspension strut
expand_moreBottom
First stage 51.63 lbf⋅ft
Screws and nuts must be replaced.
Second stage 90°
Top 33.19 lbf⋅ft
expand_moreRear axle wheel suspension
expand_moreRear axle carrier
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)
expand_moreOn chassis
First stage 81.13 lbf⋅ft
Replace screws.
Second stage 90°
expand_moreRear axle drive shaft
expand_moreAt the gearbox
M10 51.63 lbf⋅ft
M8 29.5 lbf⋅ft
expand_moreM14
expand_moreCentral screws
First stage 84.82 lbf⋅ft
Use new screw.
Second stage 180°
expand_moreM16
expand_moreCentral screws
First stage 140.14 lbf⋅ft
Use new screw.
Second stage 180°
Rear axle stabilizer mounting 18.44 lbf⋅ft
Rear axle stabilizer support at the axle control arm 47.94 lbf⋅ft
Rear axle stabilizer support at the stabilizer 36.88 lbf⋅ft
expand_moreRear axle stabilizer support at the stub axle
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) 40.57 lbf⋅ft
expand_moreTrack control arm lower
expand_moreAt the subframe
First stage 51.63 lbf⋅ft
Replace screws and nuts.
Second stage 90°
expand_moreOn stub axle
Aluminium stub axle 70.07 lbf⋅ft
Replace nuts.
Steel stub axle 73.76 lbf⋅ft
Replace nuts.
expand_moreTrack control arm upper
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)
At the subframe 70.07 lbf⋅ft
Replace screws and nuts.
expand_moreOn stub axle
First stage 51.63 lbf⋅ft
Replace screws and nuts.
Second stage 90°
expand_moreWheel hub wheel bearing
expand_moreM14
First stage 84.82 lbf⋅ft
Use new screw.
Second stage 180°
expand_moreM16
First stage 140.14 lbf⋅ft
Use new screw.
Second stage 180°
expand_moreWheel bearing unit
First stage 59 lbf⋅ft
Replace screws.
Second stage 90°
expand_moreWheels and tires
expand_moreTire pressure sensors
Torx screws 2.95 lbf⋅ft
Replace the screw.
Union nuts 2.95 lbf⋅ft
Wheel attachment 88.51 lbf⋅ft

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 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.

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 2003 Audi A6 Avant Quattro you're not only saving money, but also also improving your technical skills and learning something new.

Audi A6 Avant Quattro C5 facelift model years

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