What role does the serpentine drive belt play in engine operation, and how should it be inspected and replaced on Volkswagen Passat?

An engine component that is both vital to the engine and its parts as well as prone to wear is a serpentine and ribbed drivebelt that is at the front of the engine and which can only undergo some wear with time, thus requiring regular checks. In V6 engines, the drivebelt drives the cooling fan, alternator, power steering pump, water pump and air conditioning compressor, and in 1.8L four-cylinder engines there is one ribbed belt that drives the cooling fan, alternator and power steering pump and the other drives the air conditioning compressor, with a V-belt driven by the power steering pump pulley as on the water pump. To examine the belt, make sure that the engine is switched off and the hood is uncovered, observe cracks, separation, fraying, and glazing on both sides by twisting the belt. The under side ribs are to be even in depth. In V6-equipped engine, the ribbed drivebelt is kept at tension by a spring-loaded tensioner assembly, and in four-cylinder engines, a cooling fan, alternator and power steering pump belt is kept at tension by a spring-loaded adjuster, the air conditioning compressor belt may need some adjustment occasionally. To replace, in case the belt is to be used again then mark the direction of rotation. In the V6, align the engine cover, position the tensioner in order to relieve tension, unscrew the belt to the tensioner and its parts and re-fit the new belt back over top of the pulleys and restore engine cover. In four-cylinder models, lift the vehicle and take off the splash shield, tightenup tensioner bolts, and take off the air conditioning drivebelt, be sure that it is correctly seated in during installation and tensioned so it will deflect about 3/16-inch on a 25-pound force. In the case of the V-belt, the radiator support panel should be positioned in the service position, the serpentine drivebelt, engine cooling fan, and fan clutch assembly removed, the water pump pulley bolts unscrewed and the V-belt removed, and then reversed on the other side during installation making sure to position the water pump correctly. To change a tensioner that does not provide a correct tension or tie in, loosen the mounting bolts and reattach using the same procedure; however, tighten the bolts to the correct torque.

Genuine Volkswagen Passat Drive Belt

Serpentine Belt

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30 Drive Belts found

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Volkswagen Passat Belt Part Number: 357-119-137
$8.24 MSRP: $13.50
You Save: $5.26 (39%)
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Product Specifications
- Other Name: V-Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1990-1991 Volkswagen Passat | GL | 4 Cyl 2.0 L GAS
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Volkswagen Passat Alternator Belt Part Number: 027-903-137
$10.07 MSRP: $16.50
You Save: $6.43 (39%)
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Product Specifications
- Other Name: V-Belt; Power Steering Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1990-1993 Volkswagen Passat | CL, GL | 4 Cyl 2.0 L GAS
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Volkswagen Passat Belt Part Number: 06B-903-137-E
$25.70 MSRP: $35.70
You Save: $10.00 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Ribbed Belt; Belt
- Replaces: 06B-903-137
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1998-2005 Volkswagen Passat | GL, GLS, GLS 4 Motion | 4 Cyl 1.8 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 07K-145-933-G
$26.51 MSRP: $36.82
You Save: $10.31 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2012-2014 Volkswagen Passat | S, SE, SEL, SEL Premium, Wolfsburg Edition | 5 Cyl 2.5 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 06F-260-849-L
$28.67 MSRP: $39.82
You Save: $11.15 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Ribbed Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2006-2008 Volkswagen Passat | 2.0T, Komfort, Lux, Turbo, Value Edition, Wolfsburg Edition | 4 Cyl 2.0 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 03L-903-137-T
$29.51 MSRP: $40.99
You Save: $11.48 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt
- Replaces: 03L-903-137, 03L-903-137-G
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2012-2015 Volkswagen Passat | TDI SE, TDI SEL, TDI SEL Premium | 4 Cyl 2.0 L DIESEL
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Volkswagen Passat Serpentine Belt Part Number: 038-903-137-T
$29.99 MSRP: $41.65
You Save: $11.66 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Ribbed Belt
- Replaces: 038-903-137-H
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2004-2005 Volkswagen Passat | GL TDI, GLS TDI | 4 Cyl 2.0 L DIESEL
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Volkswagen Passat Serpentine Belt Part Number: 022-145-933-AP
$41.39 MSRP: $57.49
You Save: $16.10 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Ribbed Belt
- Replaces: 022-145-933-AG, 022-145-933-T
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2012-2018, 2006-2008 Volkswagen Passat | 3.6, GT, SE, SEL Premium, VR6 | 6 Cyl 3.6 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 037-260-849-C
$44.39 MSRP: $61.66
You Save: $17.27 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Ribbed Belt; Serpentine Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1995-1997 Volkswagen Passat | GLS, TDI | 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 037-903-137-G
$44.39 MSRP: $61.66
You Save: $17.27 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt; Serpentine Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1995 Volkswagen Passat | GLS | 4 Cyl 2.0 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 04L-260-849-AB
$48.71 MSRP: $67.65
You Save: $18.94 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2015 Volkswagen Passat | TDI SE, TDI SEL Premium | 4 Cyl 2.0 L DIESEL
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Volkswagen Passat Serpentine Belt Part Number: 021-145-933-C
$49.20 MSRP: $68.33
You Save: $19.13 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt; Alternator Belt, Power Steering Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1993-1997 Volkswagen Passat | GLX | 6 Cyl 2.8 L GAS
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Volkswagen Passat Belt Part Number: 078-903-137-BC
$55.91 MSRP: $77.65
You Save: $21.74 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt; Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1998-2005 Volkswagen Passat | 4 Motion, GL, GLS, GLS 4 Motion, GLX, GLX 4 Motion | 6 Cyl 2.8 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 07K-145-933-F
$77.34 MSRP: $108.31
You Save: $30.97 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Double Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2012-2014 Volkswagen Passat | S, SE, SEL, SEL Premium, Wolfsburg Edition | 5 Cyl 2.5 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 021-145-933-H
$101.96 MSRP: $142.80
You Save: $40.84 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Double Belt; Alternator Belt, Power Steering Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1993-1997 Volkswagen Passat | GLX | 6 Cyl 2.8 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 07D-145-933-E
$140.55 MSRP: $196.84
You Save: $56.29 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Double Belt; Power Steering Belt
- Replaces: 07D-145-933-C
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2002-2004 Volkswagen Passat | W8 | 8 Cyl 4.0 L GAS
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Volkswagen Passat Pulley Part Number: 049-903-119-L
$203.92 MSRP: $285.60
You Save: $81.68 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Alternator Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1990-1994 Volkswagen Passat | CL, GL, GLX | 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 037-903-137-H
$28.32 MSRP: $39.33
You Save: $11.01 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt; Alternator Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1996-1997 Volkswagen Passat | GLS, TDI | 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS
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Volkswagen Passat Serpentine Belt Part Number: 06K-260-849-A
$28.79 MSRP: $39.98
You Save: $11.19 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Ribbed Belt
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2016-2022 Volkswagen Passat | Limited Edition, R-Line, S, SE, SE R-Line, SEL, SEL Premium, Wolfsburg Edition | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Volkswagen Passat Belt Part Number: 06K-121-605-C
$31.31 MSRP: $43.48
You Save: $12.17 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tooth Belt; Belt, Drive Belt, Water Pump Belt
- Replaces: 06K-121-605
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2014-2022 Volkswagen Passat | Limited Edition, R-Line, S, SE, SE R-Line, SEL, SEL Premium, Sport, Wolfsburg Edition | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS

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Volkswagen Passat Drive Belt

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Volkswagen Passat Drive Belt Parts and Q&A

Serpentine Belt
038-903-137-T
Q: What role does the serpentine drive belt play in engine operation, and how should it be inspected and replaced on Volkswagen Passat?
A:
An engine component that is both vital to the engine and its parts as well as prone to wear is a serpentine and ribbed drivebelt that is at the front of the engine and which can only undergo some wear with time, thus requiring regular checks. In V6 engines, the drivebelt drives the cooling fan, alternator, power steering pump, water pump and air conditioning compressor, and in 1.8L four-cylinder engines there is one ribbed belt that drives the cooling fan, alternator and power steering pump and the other drives the air conditioning compressor, with a V-belt driven by the power steering pump pulley as on the water pump. To examine the belt, make sure that the engine is switched off and the hood is uncovered, observe cracks, separation, fraying, and glazing on both sides by twisting the belt. The under side ribs are to be even in depth. In V6-equipped engine, the ribbed drivebelt is kept at tension by a spring-loaded tensioner assembly, and in four-cylinder engines, a cooling fan, alternator and power steering pump belt is kept at tension by a spring-loaded adjuster, the air conditioning compressor belt may need some adjustment occasionally. To replace, in case the belt is to be used again then mark the direction of rotation. In the V6, align the engine cover, position the tensioner in order to relieve tension, unscrew the belt to the tensioner and its parts and re-fit the new belt back over top of the pulleys and restore engine cover. In four-cylinder models, lift the vehicle and take off the splash shield, tightenup tensioner bolts, and take off the air conditioning drivebelt, be sure that it is correctly seated in during installation and tensioned so it will deflect about 3/16-inch on a 25-pound force. In the case of the V-belt, the radiator support panel should be positioned in the service position, the serpentine drivebelt, engine cooling fan, and fan clutch assembly removed, the water pump pulley bolts unscrewed and the V-belt removed, and then reversed on the other side during installation making sure to position the water pump correctly. To change a tensioner that does not provide a correct tension or tie in, loosen the mounting bolts and reattach using the same procedure; however, tighten the bolts to the correct torque.