Genuine Audi S4 Coolant Reservoir Hose

Water Bypass Hose

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85 Coolant Reservoir Hoses found

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Audi S4 Reservoir Cap Part Number: 3B0-121-321
$23.24 MSRP: $37.18
You Save: $13.94 (38%)
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Product Specifications
- Other Name: Cover; Cap, Radiator Cap
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2005-2016, 2000-2002 Audi S4 | Avant, Base, Cabriolet, Premium Plus, Prestige | 6 Cyl 2.7 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
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Audi S4 Water Return Tube Part Number: 06M-145-963-H
$45.98 MSRP: $63.33
You Save: $17.35 (28%)
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Product Specifications
- Other Name: Water Pipe; Coolant Line, Outlet Hose, Return Line
- Replaces: 06M-145-963-D, 06M-145-963-E
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2025 Audi S4 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Water Inlet Hose Part Number: 06M-145-920-D
$86.87 MSRP: $121.66
You Save: $34.79 (29%)
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Product Specifications
- Other Name: Hose
- Replaces: 06M-145-920-E
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2025 Audi S4 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Water Hose Assembly Part Number: 8E0-121-055-AD
$170.17 MSRP: $238.33
You Save: $68.16 (29%)
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Product Specifications
- Other Name: Water Hose; Lower Hose
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2005-2009 Audi S4 | Avant, Base, Cabriolet | 8 Cyl 4.2 L GAS
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Audi S4 Expansion Tank Part Number: 8W1-121-405-N
$152.32 MSRP: $213.32
You Save: $61.00 (29%)
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Product Specifications
- Other Name: Tank; Reservoir
- Replaces: 8W1-121-405-F, 8W1-121-405-K, 8W1-121-405-J
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2025 Audi S4 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Thermostat Switch Housing Part Number: 893-906-231
$10.25 MSRP: $13.36
You Save: $3.11 (24%)
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Product Specifications
- Other Name: Housing; Resistor
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2002, 1992-1994 Audi S4 | Avant, Base | 5 Cyl 2.2 L GAS, 6 Cyl 2.7 L GAS
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Audi S4 Lower Hose Part Number: 8W0-122-055-Q
$116.62 MSRP: $163.34
You Save: $46.72 (29%)
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Product Specifications
- Other Name: Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2019 Audi S4 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Upper Hose Part Number: 8W0-122-101-BE
$54.45 MSRP: $74.99
You Save: $20.54 (28%)
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Product Specifications
- Other Name: Hose
- Position: Upper
- Replaces: 8W0-122-101-AM
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2019 Audi S4 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Hose & Tube Assembly Part Number: 078-121-597-K
$0.01
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Product Specifications
- Other Name: Pipe; Coolant Line, Inlet Pipe
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2002 Audi S4 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi S4 Auxiliary Radiator Insulator Part Number: 4D0-317-867-A
$7.85 MSRP: $12.25
You Save: $4.40 (36%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mounting
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2019, 2004-2012 Audi S4 | Avant, Base, Cabriolet, Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
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Audi S4 Thermostat Housing Part Number: 06E-121-111-AL
$96.39 MSRP: $134.99
You Save: $38.60 (29%)
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Product Specifications
- Other Name: Thermostat; Thermostat Unit
- Replaces: 06E-121-111-S, 06E-121-111-P, 06E-121-111-T, 06E-121-111-AD
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2010-2016 Audi S4 | Base, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Auxiliary Radiator Grommet Part Number: 7P0-121-276
$5.90 MSRP: $9.23
You Save: $3.33 (37%)
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Product Specifications
- Other Name: Grommet
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2025 Audi S4 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Hose & Tube Assembly Tube Part Number: 4Z7-121-105
$71.39 MSRP: $99.99
You Save: $28.60 (29%)
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Product Specifications
- Other Name: Hose; Connector Hose, Tube
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2004-2009 Audi S4 | Avant, Base, Cabriolet | 8 Cyl 4.2 L GAS
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Audi S4 Pipe Assembly Part Number: 06E-121-045-BB
$147.55 MSRP: $206.64
You Save: $59.09 (29%)
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Product Specifications
- Other Name: Pipe; Tube, Water Pipe
- Replaces: 06E-121-045-AA, 06E-121-045-AJ, 06E-121-045-AK
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2013-2016 Audi S4 | Base, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Radiator Upper Insulator Part Number: 8D0-121-276-B
$12.50 MSRP: $20.00
You Save: $7.50 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mounting; Radiator Insulator, Radiator Upper Mount
- Position: Upper
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2002 Audi S4 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi S4 Connector Hose Part Number: 078-121-096-AF
$13.75 MSRP: $22.00
You Save: $8.25 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2002 Audi S4 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi S4 Lower Insulator Isolator Part Number: 4H0-121-268
$15.18 MSRP: $24.29
You Save: $9.11 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mounting
- Position: Lower
- Replaces: 8K0-121-268-A, 8K0-121-268-C
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2010-2016 Audi S4 | Base, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Auxiliary Radiator Isolator Part Number: 4M0-121-268-A
$15.49 MSRP: $24.78
You Save: $9.29 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Mounting
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2018-2025 Audi S4 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi S4 Connector Hose Part Number: 078-121-082-E
$16.25 MSRP: $26.00
You Save: $9.75 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose
- Replaces: 078-121-082-D
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2000-2002 Audi S4 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi S4 Lower Hose Part Number: 8E0-121-055-L
Product Specifications
- Other Name: Water Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following Vehicles:
- 2004-2005 Audi S4 | Avant, Base, Cabriolet | 8 Cyl 4.2 L GAS

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Audi S4 Coolant Reservoir Hose

Choose original equipment manufacturer Coolant Reservoir Hose for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Coolant Reservoir Hose at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi S4 and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your S4 needs now.