in your garage to make future searches easy.

Condition Value
expand_moreAuxiliary drive belt size
expand_moreAll Audi gasoline straight-4 2.0 L ALT engines
Vehicles with chassis number from 8E-4-191 001 21.36 x 1572 mm
Up to vehicle chassis number 8E-4-191 000 21.36 x 1590 mm
All Audi gasoline V6 2.4 L AMM engines 21.36 x 1856 mm
All Audi gasoline V6 3.0 L ASN engines 21.36 x 1878 mm
expand_moreAll Audi diesel straight-4 1.9 L AVB engines
expand_moreVehicles with chassis number from 8E-4-000 001
Main belt 21.18 x 1613 mm
expand_moreUp to vehicle chassis number 8E-3-500 000
Air-conditioning secondary belt 14.24 x 841 mm
Main belt 17.65 x 1432 mm
expand_moreAll Audi diesel straight-4 1.9 L AVF engines
Air-conditioning secondary belt 14.24 x 841 mm
expand_moreVehicles with chassis number 8E-4-000 001, AVF engine, and automatic transmission
Main belt 21.18 x 1613 mm
expand_moreVehicles with chassis number 8E-4-010 001, AVF engine, and manual transmission
Main belt 21.18 x 1613 mm
expand_moreUp to vehicle chassis number 8E-3-500 000 with AVF engine and automatic transmission
Main belt 17.65 x 1432 mm
expand_moreUp to vehicle chassis number 8E-3-500 000 with AWX engine
Main belt 17.65 x 1432 mm
expand_moreUp to vehicle chassis number 8E-4-010 000 with AVF engine and manual transmission
Main belt 17.65 x 1432 mm
All Audi gasoline V6 3.0 L AVK engines 21.36 x 1878 mm
expand_moreAll Audi gasoline straight-4 2.0 L AWA engines
Vehicles with chassis number from 8E-4-191 001 21.36 x 1572 mm
Up to vehicle chassis number 8E-4-191 000 21.36 x 1590 mm
All Audi gasoline V6 3.0 L BBJ engines 21.36 x 1878 mm
All Audi gasoline V6 2.4 L BDV engines 21.36 x 1856 mm
expand_moreAll Audi diesel V6 2.5 L BFC engines
Air-conditioning secondary belt 14.24 x 1217 mm
Main belt 21.36 x 2404 mm
expand_moreAll other modifications
expand_moreVehicles with chassis number from 8E-4-191 001
With air-conditioning 21.36 x 1572 mm
expand_moreUp to vehicle chassis number 8E-4-191 000
With air-conditioning 21.36 x 1590 mm
Without air-conditioning system 21.36 x 1080 mm

Check drive belts regularly on your A4 and replace them if you found any signs of wear or any tears or damages.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Audi A4 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 A4 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 you're not only saving money, but also also improving your technical skills and learning something new.

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