How to inspect the auxiliary drive belt for damage and wear for Petrol engines on Audi A3?

Apply the handbrake, then jack up the front of the vehicle and support it on axle stands. Using a socket on the crankshaft pulley bolt, turn the engine slowly clockwise to examine the full length of the drive belt. Look for cracks, splitting, and fraying on the surface of the belt, and check for signs of glazing, which appears as shiny patches, as well as separation of the belt plies. Use a mirror to inspect the underside of the drive belt. If any damage or wear is visible, or if there are traces of oil or grease, the belt should be renewed.

How to access and adjust the drive belt on Audi 100?

Where necessary, remove any covers for access to the auxiliary drivebelt. On the ADR engine, the main automatically tensioned ribbed belt drives the alternator and power steering pump, while the coolant pump is driven by a separate V-belt off the PAS pulley, and the air conditioning compressor is driven by a ribbed belt from a second pulley on the crankshaft. For the AAE, ABK, and AAD engines, the main V-belt drives the alternator and coolant pump, with a second V-belt for air conditioning models driving the compressor from the crankshaft. In the ACE and AAR engines, the main V-belt drives the power steering pump and coolant pump, while the alternator is driven by a ribbed belt from the crankshaft, and a further V-belt drives the compressor from the front of the crankshaft on air conditioning models. Examine the V-belt for damage and wear, using a mirror and possibly a torch, and turn the engine with a spanner on the crankshaft pulley to observe all areas of the belt. To check the tension of the drivebelt, depress it midway between the pulleys on the longest run; it should deflect by the specified amount. If adjustment is necessary for the alternator or power steering pump drivebelt, loosen the mounting bolts and adjustment nut, then turn the adjustment rack bolt until the correct tension is achieved, followed by tightening the lock nut and mounting bolts. For air conditioning compressor adjustments on 4-cylinder engines, alter the number of shims between the two halves of the pulley by unscrewing the nuts, removing the outer half, adding or removing shims, and then refitting and tightening the pulley half gradually while turning the engine slowly with a spanner. To renew the drivebelt, loosen mounting bolts and back off the adjustment until the belt can be removed, noting that another belt may need to be removed for access. Fit the new belt and adjust it as previously described.

Genuine Audi Drive Belt

Serpentine Belt

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89 Drive Belts found

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Audi Serpentine Belt Part Number: 07K-145-933-T
$70.21 MSRP: $98.34
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Product Specifications
- Other Name: Ribbedbelt; Serpentine Belt
Fits the following Audi Models:
- RS3 | 2022-2024, 2017-2020 | Base | 5 Cyl 2.5 L GAS
- TT RS Quattro | 2018-2022 | Base, Heritage Edition | 5 Cyl 2.5 L GAS
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Audi Serpentine Belt Part Number: 06C-903-137-E
$63.07 MSRP: $88.33
You Save: $25.26 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A4 | 2005 | Cabriolet | 6 Cyl 3.0 L GAS
- A4 Quattro | 2005-2006 | Cabriolet | 6 Cyl 3.0 L GAS
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Audi Serpentine Belt Part Number: 077-903-137-S
$63.07 MSRP: $88.33
You Save: $25.26 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A6 Quattro | 2000-2004 | Base | 8 Cyl 4.2 L GAS
- A8 Quattro | 2000-2003 | Base, L | 8 Cyl 4.2 L GAS
- S6 | 2002-2003 | Avant | 8 Cyl 4.2 L GAS
- S8 | 2001-2003 | Base | 8 Cyl 4.2 L GAS
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Audi Serpentine Belt Part Number: 077-903-137-AE
$67.82 MSRP: $94.98
You Save: $27.16 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A8 Quattro | 2004-2006 | Base, L | 8 Cyl 4.2 L GAS
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Audi Serpentine Belt Part Number: 059-903-137-AN
$84.49 MSRP: $118.34
You Save: $33.85 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A8 Quattro | 2014 | L TDI | 6 Cyl 3.0 L DIESEL
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Audi Serpentine Belt Part Number: 06E-903-137-AC
$84.49 MSRP: $118.34
You Save: $33.85 (29%)
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Product Specifications
- Other Name: Ribbed Belt
- Replaces: 06E-903-137-K
Fits the following Audi Models:
- A4 Quattro | 2009 | Base | 6 Cyl 3.2 L GAS
- A5 Quattro | 2008-2010 | Base | 6 Cyl 3.2 L GAS
- Q5 | 2009-2012 | Premium, Premium Plus, Prestige | 6 Cyl 3.2 L GAS
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Audi Serpentine Belt Part Number: 06E-903-137-J
$83.30 MSRP: $116.67
You Save: $33.37 (29%)
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Product Specifications
- Other Name: Ribbed Belt
- Replaces: 06E-903-137-A
Fits the following Audi Models:
- A4 | 2006-2008 | Base | 6 Cyl 3.2 L GAS
- A4 Quattro | 2005-2009 | Avant, Base, Cabriolet | 6 Cyl 3.2 L GAS
- A6 | 2006-2011 | Base | 6 Cyl 3.2 L GAS
- A6 Quattro | 2005-2008 | Avant, Base | 6 Cyl 3.2 L GAS
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Audi Serpentine Belt Part Number: 06E-903-137-N
$84.49 MSRP: $118.34
You Save: $33.85 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A6 Quattro | 2009-2011 | Avant, Base | 6 Cyl 3.0 L GAS
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Audi Serpentine Belt Part Number: 06E-903-137-Q
$84.49 MSRP: $118.34
You Save: $33.85 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- S4 | 2010-2013 | Base | 6 Cyl 3.0 L GAS
- S5 | 2010-2012 | Cabriolet | 6 Cyl 3.0 L GAS
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Audi Serpentine Belt Part Number: 06E-903-137-R
$84.49 MSRP: $118.34
You Save: $33.85 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A8 Quattro | 2013-2014 | Base, L | 6 Cyl 3.0 L GAS
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Audi Serpentine Belt Part Number: 06M-903-137-AA
$83.30 MSRP: $116.67
You Save: $33.37 (29%)
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Product Specifications
- Other Name: Ribbedbelt; Alternator Belt, Serpentine Belt
Fits the following Audi Models:
- A6 allroad | 2020-2023 | Premium Plus, Prestige | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- A6 Quattro | 2019-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- A7 Sportback | 2019-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- A8 Quattro | 2019-2023 | L | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Serpentine Belt Part Number: 06M-903-137-AN
$82.11 MSRP: $115.01
You Save: $32.90 (29%)
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Product Specifications
- Other Name: Ribbedbelt; Alternator Belt, Serpentine Belt
Fits the following Audi Models:
- S6 | 2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
- S7 Sportback | 2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
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Audi Serpentine Belt Part Number: 066-145-933-J
$71.39 MSRP: $99.98
You Save: $28.59 (29%)
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Product Specifications
- Other Name: Double Belt
- Replaces: 022-145-933-G
Fits the following Audi Models:
- TT Quattro | 2004-2006 | Base, Special Edition | 6 Cyl 3.2 L GAS
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Audi Serpentine Belt Part Number: 06E-903-137-AE
$64.25 MSRP: $89.98
You Save: $25.73 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- Q7 | 2011-2015 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi Serpentine Belt Part Number: 059-903-137-AL
$72.58 MSRP: $101.66
You Save: $29.08 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- Q7 | 2013-2015 | TDI Premium, TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
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Audi Serpentine Belt Part Number: 059-903-137-R
$72.58 MSRP: $101.66
You Save: $29.08 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Ribbed Belt
- Replaces: 059-903-137-AC
Fits the following Audi Models:
- Q7 | 2009-2014 | TDI, TDI Premium, TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
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Audi Serpentine Belt Part Number: 07P-145-933-E
$73.77 MSRP: $103.32
You Save: $29.55 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A8 Quattro | 2015-2016 | L W12 | 12 Cyl 6.3 L GAS
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Audi Serpentine Belt Part Number: 07L-903-137-T
$85.68 MSRP: $120.01
You Save: $34.33 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- R8 | 2014-2015, 2010-2012 | Base, GT, GT Spyder, Plus, Spyder | 10 Cyl 5.2 L GAS
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Audi Serpentine Belt Part Number: 059-903-137-AG
$96.39 MSRP: $134.99
You Save: $38.60 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A6 Quattro | 2014-2016 | TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
- A7 Quattro | 2014-2016 | TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
- Q5 | 2014-2016 | TDI Premium Plus, TDI Prestige | 6 Cyl 3.0 L DIESEL
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Audi Serpentine Belt Part Number: 077-903-137-Q
$107.56 MSRP: $150.65
You Save: $43.09 (29%)
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Product Specifications
- Other Name: Ribbed Belt
Fits the following Audi Models:
- A6 Quattro | 2002-2004 | Base | 8 Cyl 4.2 L GAS
- A8 | 1997-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1997-1999 | Base | 8 Cyl 4.2 L GAS
- S6 | 2002-2003 | Avant | 8 Cyl 4.2 L GAS
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Audi Drive Belt

Audi Drive Belt helps to deliver engine power to essential components, making each journey easy and reliable. Audi was founded in 1909 and soon established a reputation for combining luxury with sportiness, and that is the same spirit that lives today with Audi's sleek sedans, bold SUVs, and cutting-edge e-tron electric models. Quattro all-wheel drive increases grip on wet roads, Virtual Cockpit screens provide clear data in front of the driver, and adaptive matrix headlights cut through the darkness to provide added safety. Audi is also moving forward with actual testing of self-driving features, demonstrating a commitment to technology that is exciting young drivers and experienced fans alike. While these innovations make headlines, silently supporting them all is the humble Drive Belt. The Drive Belt is a tough serpentine loop that wraps around pulleys to spin the alternator, power steering pump, and air conditioning compressor with an efficiency close to 98 percent. In all Audi models, this design replaces older single V belts and provides tighter traction, simpler tension adjustment, and better endurance against sudden spikes in loads. Made of durable synthetic material, the Drive Belt is resistant to heat and lasts up to 100,000 miles, but is lightweight, which helps reduce engine drag. Regular inspection of the Drive Belt ensures charging, cooling, and climate systems remain in harmonious harmony to protect the performance edge that defines Audi.

Stick with genuine OEM Drive Belt when you need quality that holds up. Audi crafts these parts to hit strict factory specs for every single unit. They also run each part through rigorous checks during production to maintain high quality. You can find exact Audi Drive Belt you need in our huge stock at AudiPartsGiant.com. You'll love our low, economical prices too. Every OEM part carries a real manufacturer's warranty, so you can buy with confidence. Returns aren't a headache here because our policy is simple. Plus, our speedy delivery gets orders out fast. Shop today and buy with total peace of mind.

Audi Drive Belt Parts and Q&A

Serpentine Belt
04L-260-849-AB
Q: How to inspect the auxiliary drive belt for damage and wear for Petrol engines on Audi A3?
A:
Apply the handbrake, then jack up the front of the vehicle and support it on axle stands. Using a socket on the crankshaft pulley bolt, turn the engine slowly clockwise to examine the full length of the drive belt. Look for cracks, splitting, and fraying on the surface of the belt, and check for signs of glazing, which appears as shiny patches, as well as separation of the belt plies. Use a mirror to inspect the underside of the drive belt. If any damage or wear is visible, or if there are traces of oil or grease, the belt should be renewed.
A/C Belt
034-260-849
Q: How to access and adjust the drive belt on Audi 100?
A:
Where necessary, remove any covers for access to the auxiliary drivebelt. On the ADR engine, the main automatically tensioned ribbed belt drives the alternator and power steering pump, while the coolant pump is driven by a separate V-belt off the PAS pulley, and the air conditioning compressor is driven by a ribbed belt from a second pulley on the crankshaft. For the AAE, ABK, and AAD engines, the main V-belt drives the alternator and coolant pump, with a second V-belt for air conditioning models driving the compressor from the crankshaft. In the ACE and AAR engines, the main V-belt drives the power steering pump and coolant pump, while the alternator is driven by a ribbed belt from the crankshaft, and a further V-belt drives the compressor from the front of the crankshaft on air conditioning models. Examine the V-belt for damage and wear, using a mirror and possibly a torch, and turn the engine with a spanner on the crankshaft pulley to observe all areas of the belt. To check the tension of the drivebelt, depress it midway between the pulleys on the longest run; it should deflect by the specified amount. If adjustment is necessary for the alternator or power steering pump drivebelt, loosen the mounting bolts and adjustment nut, then turn the adjustment rack bolt until the correct tension is achieved, followed by tightening the lock nut and mounting bolts. For air conditioning compressor adjustments on 4-cylinder engines, alter the number of shims between the two halves of the pulley by unscrewing the nuts, removing the outer half, adding or removing shims, and then refitting and tightening the pulley half gradually while turning the engine slowly with a spanner. To renew the drivebelt, loosen mounting bolts and back off the adjustment until the belt can be removed, noting that another belt may need to be removed for access. Fit the new belt and adjust it as previously described.