What precautions should be taken when disconnecting the battery and replacing the radiator and coolant reservoir on Volkswagen Jetta?

If the battery is disconnected, several systems must be re-learned before they will work properly. For the replacement of the radiator shutter assembly (if equipped), follow the appropriate procedures. Begin by raising the front of the vehicle and securely supporting it on jackstands, then disconnect the cable from the negative terminal of the battery. Remove the under-vehicle splash shield and drain the cooling system, followed by removing the engine cover and cooling fan shroud. Disconnect the hoses from the radiator, being prepared for some coolant to spill, and then remove the front bumper cover. Next, remove the air guide fasteners and the air guides from each side of the condenser, followed by the condenser to radiator bolts. Remove the radiator mount bolts and push the radiator towards the rear until the upper mounts can be removed from the sides, then lift the radiator up and out of the lower mounts. Installation is the reverse of removal, and after refilling and bleeding the system, run the engine and check carefully for leaks. For specific engine types, remove the clips securing the hose connectors, disconnect the coolant temperature sensor electrical connector, and lift the clips securing the hose connectors to the charge air system circuit cooler. Remove the radiator mounting bolts, slide the radiator towards the engine until the upper mounts are free, and lift it out. Prior to installation, replace any damaged components. For the expansion tank, drain the cooling system until empty, detach the upper coolant hoses, disconnect the coolant level sensor connector, and remove the mounting screws to lift the expansion tank and disconnect the lower hose. Ensure the reservoir is clean before installation, which is the reverse of removal.

How to replace the coolant reservoir and radiator on Volkswagen Passat?

The steps involved in substituting the radiator include first lifting the front of the car and ensuring that it rests on jackstands and then emptying the cooling system. Place the radiator support panel in an accessible location and unscrew the upper and lower hoses of the coolant through prying the clip out of shape and removing the hoses off the radiator and the fan thermo switch electrical connector. In the cases of an automatic transaxle, un-hook transmission oil cooler lines at the lower section of the radiator. In cars that have air conditioning, remove the air conditioning line retaining clamps, loosen the condenser mounting bolts and unbreech the condenser and the radiator without breaking the lines and attach it to the body using wire so that it is not held loose. The second step is to remove the radiator mounting clips and the radiator out of the support panel. Prior to fitting the new radiator, any broken hose clips and fittings should be replaced and radiator checked and cleaned in case of leaks or other cooling problems. Installation is done in reverse sequence of removal and once we have installed, fill the system with correct antifreeze mixture and remove all the air in the cooling system. To perform the expansion tank, drain the system until it is dry, disconnect the coolant recovery hoses, disconnect the reservoir mounting bolts, lift the expansion tank off the firewall, and disconnect the coolant level sensor connector, and then leave the expansion tank out of engine compartment. The reservoir must be clean and free of debris before installation, and it is done in the same order as it is removed, too.

Genuine Volkswagen Coolant Reservoir

Coolant Tank Reservoir

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27 Coolant Reservoirs found

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Volkswagen Reservoir Part Number: 8Z0-121-407-A
$25.31 MSRP: $42.18
You Save: $16.87 (40%)
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Product Specifications
- Other Name: Tank; Reservoir Tank
Fits the following Volkswagen Models:
- Touareg | 2011-2014 | Hybrid | 6 Cyl 3.0 L FULL HYBRID EV-GAS (FHEV)
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Volkswagen Reservoir Part Number: 5QM-121-407-E
$32.51 MSRP: $54.18
You Save: $21.67 (40%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- Jetta | 2019-2024 | GLI Autobahn, GLI S, R-Line, S, SE, SEL, SEL Premium, Sport | 4 Cyl 1.4 L GAS, 4 Cyl 1.5 L GAS, 4 Cyl 2.0 L GAS
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Volkswagen Reservoir Part Number: 5WA-121-407-F
$15.73 MSRP: $25.78
You Save: $10.05 (39%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- Arteon | 2022-2023 | SE R-Line, SEL Premium R-Line, SEL R-Line | 4 Cyl 2.0 L GAS
- GTI | 2022-2024 | 40th Anniversary Edition, Autobahn, S, SE | 4 Cyl 2.0 L GAS
- Golf R | 2022-2023 | 20th Anniversary Edition, Base | 4 Cyl 2.0 L GAS
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Volkswagen Reservoir Part Number: 3QF-121-407-A
$4.05 MSRP: $6.64
You Save: $2.59 (40%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- Atlas | 2024 | Peak Edition SE, Peak Edition SEL, SE, SEL, SEL Premium R-Line | 4 Cyl 2.0 L GAS
- Atlas Cross Sport | 2024 | SE, SEL, SEL Premium R-Line, SEL R-Line | 4 Cyl 2.0 L GAS
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Volkswagen Reservoir Part Number: 701-121-407-E
$55.20 MSRP: $76.67
You Save: $21.47 (28%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- EuroVan | 2001-2003 | GLS, MV | 6 Cyl 2.8 L GAS
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Volkswagen Reservoir Part Number: 1J0-121-407-F
$55.55 MSRP: $77.15
You Save: $21.60 (28%)
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Product Specifications
- Other Name: Tank
- Replaces: 1C0-121-407-E, 1C0-121-407-F, 1C0-121-403-C, 1J0-121-403-B, 1C0-121-403, 1C0-121-407-C, 1C0-121-403-A, 1J0-121-403, 1J0-121-407-E
Fits the following Volkswagen Models:
- Beetle | 1998-2010 | 2.5, Base, GL, GLS, GLS TDI, GLX, S, SE, Sport, TDI, Turbo S | 4 Cyl 1.8 L GAS, 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS, 5 Cyl 2.5 L GAS
- Golf | 1999-2006 | GL, GL TDI, GLS, GLS TDI, GTI, GTI 1.8T, GTI 20th Anniversary, GTI 337, GTI GLS, GTI GLX, GTI VR6, TDI, Wolfsburg Edition | 4 Cyl 1.8 L GAS, 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS
- Jetta | 1999-2005 | GL, GL TDI, GLI, GLS, GLS TDI, GLX, TDI, Wolfsburg Edition | 4 Cyl 1.8 L GAS, 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS
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Volkswagen Reservoir Part Number: 1K0-121-407-F
$58.43 MSRP: $81.16
You Save: $22.73 (29%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- Beetle | 2012-2019 | #PinkBeetle, Base, Classic, Coast, Denim, Dune, Final Edition SE, Final Edition SEL, Fleet Edition, GSR, R-Line, R-Line S, R-Line SE, R-Line SEL, S, SE, SEL, TDI, Turbo, Wolfsburg Edition | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS, 5 Cyl 2.5 L GAS
- CC | 2009-2017 | 4 Motion, Executive, Executive 4 Motion, Lux, Lux Limited, Lux Plus, Luxury, R-Line, R-Line Executive, Sport, Sport Plus, Trend, V6 Executive 4Motion, VR6, VR6 4Motion, VR6 4Motion Executive, VR6 Sport | 4 Cyl 2.0 L GAS, 6 Cyl 3.6 L GAS
- Eos | 2007-2016 | 2.0T, 3.2, Base, Executive, Final Edition, Komfort, Lux, Sport, Turbo, VR6 | 4 Cyl 2.0 L GAS, 6 Cyl 3.2 L GAS
- GTI | 2006-2014 | Base, Driver's Edition, Fahrenheit, Wolfsburg Edition | 4 Cyl 2.0 L GAS
- Golf | 2010-2014 | Base, TDI | 4 Cyl 2.0 L DIESEL, 5 Cyl 2.5 L GAS
- Golf R | 2012-2013 | Base | 4 Cyl 2.0 L GAS
- Jetta | 2005-2018 | 2.0T, 2.5, Base, GL TDI, GLI, GLI SE, GLI SEL, GLS TDI, Hybrid, Hybrid SE, Hybrid SEL, Hybrid SEL Premium, S, SE, SE Sport, SEL, SEL Premium, Sport, TDI, TDI Cup Edition, TDI Premium, TDI S, TDI SE, TDI SEL, Value Edition, Wolfsburg Edition | 4 Cyl 1.4 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 1.4 L GAS, 4 Cyl 1.8 L GAS, 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS, 5 Cyl 2.5 L GAS
- Passat | 2012-2022, 2006-2010 | 2.0T, 3.6, GT, Komfort, Limited Edition, Lux, R-Line, S, SE, SE R-Line, SEL, SEL Premium, Sport, TDI SE, TDI SEL, TDI SEL Premium, Turbo, Value Edition, VR6, Wolfsburg Edition | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS, 5 Cyl 2.5 L GAS, 6 Cyl 3.6 L GAS
- R32 | 2008 | Base | 6 Cyl 3.2 L GAS
- Rabbit | 2006-2009 | 2.5, S | 5 Cyl 2.5 L GAS
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Volkswagen Reservoir Part Number: 5Q0-121-407-M
$59.51 MSRP: $82.65
You Save: $23.14 (28%)
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Product Specifications
- Other Name: Tank
- Replaced by: 5Q0-121-407-AA
Fits the following Volkswagen Models:
- Atlas | 2018-2023 | S, SE, SE R-Line, SEL, SEL Premium, SEL Premium R-Line, SEL R-Line, SEL R-Line Black | 4 Cyl 2.0 L GAS, 6 Cyl 3.6 L GAS
- Atlas Cross Sport | 2020-2023 | S, SE, SE R-Line, SEL, SEL Premium, SEL Premium R-Line, SEL R-Line, SEL R-Line Black, Trendline | 4 Cyl 2.0 L GAS, 6 Cyl 3.6 L GAS
- GTI | 2015-2021 | Autobahn, Rabbit Edition, S, SE, Sport | 4 Cyl 2.0 L GAS
- Golf | 2020-2021, 2015-2018 | Base, Launch Edition, S, SE, SEL, TDI S, TDI SE, TDI SEL, TSi, Wolfsburg Edition | 4 Cyl 1.4 L GAS, 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L DIESEL
- Golf Alltrack | 2017-2019 | S, SE, SEL | 4 Cyl 1.8 L GAS
- Golf R | 2015-2019 | Base | 4 Cyl 2.0 L GAS
- Golf SportWagen | 2015-2019 | Limited Edition, S, SE, SEL, TDI S, TDI SE, TDI SEL | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L DIESEL
- Jetta | 2019-2024 | GLI 35th Anniversary Edition, GLI Autobahn, GLI S, R-Line, S, SE, SEL, SEL Premium, Sport | 4 Cyl 1.4 L GAS, 4 Cyl 1.5 L GAS, 4 Cyl 2.0 L GAS
- Taos | 2022-2024 | S, SE, SEL | 4 Cyl 1.5 L GAS
- Tiguan | 2018-2024 | S, SE, SE R-Line Black, SEL, SEL Premium, SEL Premium R-Line, SEL R-Line, SEL R-Line Jet Black | 4 Cyl 2.0 L GAS
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Volkswagen Reservoir Part Number: 3B0-121-407-B
$60.69 MSRP: $85.00
You Save: $24.31 (29%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- Passat | 2002-2004 | W8 | 8 Cyl 4.0 L GAS
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Volkswagen Reservoir Part Number: 1H0-121-407-C
$65.26 MSRP: $91.40
You Save: $26.14 (29%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- Cabrio | 1998-2002 | Base, GL, GLS, GLX | 4 Cyl 2.0 L GAS
- Golf | 1998-1999 | GL, GTI, K2, Wolfsburg Edition | 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS
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Volkswagen Reservoir Part Number: 7B0-121-407-A
$87.91 MSRP: $123.53
You Save: $35.62 (29%)
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Product Specifications
- Other Name: Tank; Expansion Tank, Reservoir
- Replaces: 7B0-121-407
Fits the following Volkswagen Models:
- Routan | 2009-2014 | S, SE, SEL, SEL Premium | 6 Cyl 3.6 L FLEX, 6 Cyl 3.8 L GAS, 6 Cyl 4.0 L GAS
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Volkswagen Reservoir Part Number: 701-121-407-C
$99.95 MSRP: $139.98
You Save: $40.03 (29%)
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Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- EuroVan | 1999-2000, 1997, 1995, 1993 | Camper, CL, GL, GLS, MV | 5 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
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Volkswagen Reservoir Part Number: 1H0-121-407-A
$112.44 MSRP: $157.48
You Save: $45.04 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank; Reservoir Tank
- Replaces: 5X0-121-407-A
Fits the following Volkswagen Models:
- Cabrio | 1995-1997 | Base, High Line | 4 Cyl 2.0 L GAS
- Corrado | 1990-1992 | G60 | 4 Cyl 1.8 L GAS
- Golf | 1990-1997 | Celebration Edition, City, GL, GTI, GTI 16-Valve, GTI 8-Valve, Jazz, K2, Limited Edition, Sport, Trek | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Jetta | 1990-1999 | Carat, Celebration Edition, City, GL, GLI 16-Valve, GLS, GT, Jazz, K2, Limited Edition, TDI, Trek, Wolfsburg Edition | 4 Cyl 1.6 L DIESEL, 4 Cyl 1.8 L GAS, 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS
- Passat | 1995-1997, 1990-1993 | CL, GL, GLS, TDI | 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS
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Volkswagen Reservoir Part Number: 3D0-121-407-H
$163.02 MSRP: $228.31
You Save: $65.29 (29%)
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Product Specifications
- Other Name: Tank
- Replaces: 3D0-121-403, 3D0-121-407-E
Fits the following Volkswagen Models:
- Phaeton | 2004-2006 | V8, W12 | 12 Cyl 6.0 L GAS, 8 Cyl 4.2 L GAS
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Volkswagen Reservoir Part Number: 7P0-121-407-B
$185.63 MSRP: $259.98
You Save: $74.35 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank; Reservoir
- Replaces: 7P0-121-407
Fits the following Volkswagen Models:
- Touareg | 2011-2017 | Hybrid, TDI, TDI Executive, TDI Lux, TDI R-Line, TDI Sport, V6 Executive, V6 Lux, V6 R-Line, V6 Sport, V6 Wolfsburg, VR6, X | 6 Cyl 3.0 L DIESEL, 6 Cyl 3.0 L FULL HYBRID EV-GAS (FHEV), 6 Cyl 3.6 L GAS
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Volkswagen Reservoir Part Number: 7L0-121-407-F
$211.81 MSRP: $296.65
You Save: $84.84 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank
- Replaces: 7L0-121-407-C, 7L0-121-407-E
Fits the following Volkswagen Models:
- Touareg | 2004-2010 | Base, TDI, V6, V8, VR6 | 10 Cyl 5.0 L DIESEL, 6 Cyl 3.0 L DIESEL, 6 Cyl 3.2 L GAS, 6 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
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Volkswagen Reservoir Part Number: 3Q0-121-407-F
$42.47 MSRP: $58.98
You Save: $16.51 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- Arteon | 2019-2021 | SE, SE R-Line, SEL, SEL Premium, SEL Premium R-Line, SEL R-Line | 4 Cyl 2.0 L GAS
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Volkswagen Reservoir Part Number: 1EA-121-407-F
$46.79 MSRP: $64.98
You Save: $18.19 (28%)
ADD TO CART
Product Specifications
- Other Name: Tank
- Replaced by: 1EA-121-407-H
Fits the following Volkswagen Models:
- ID.4 | 2021-2022 | 1st Edition, Pro, Pro S | BATTERY EV (EV/BEV)
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Volkswagen Reservoir Part Number: 1EA-121-407-H
$46.79 MSRP: $64.98
You Save: $18.19 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank
Fits the following Volkswagen Models:
- ID.4 | 2023 | Pro, Pro S, Pro S Plus, S, Standard | BATTERY EV (EV/BEV)
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Volkswagen Reservoir Part Number: 5QM-121-407-C
$31.07 MSRP: $51.78
You Save: $20.71 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank; Expansion Tank, Reservoir
Fits the following Volkswagen Models:
- Atlas | 2018-2019 | Launch Edition, S, SE, SE R-Line, SEL, SEL Premium, SEL R-Line | 6 Cyl 3.6 L GAS
- GTI | 2018-2021 | Autobahn, Rabbit Edition, S, SE | 4 Cyl 2.0 L GAS
- Golf | 2019-2021 | S, SE, TSi | 4 Cyl 1.4 L GAS
- Golf SportWagen | 2019 | S, SE | 4 Cyl 1.4 L GAS
- Jetta | 2019-2020 | GLI 35th Anniversary Edition, GLI Autobahn, GLI S, R-Line, S, SE, SEL, SEL Premium | 4 Cyl 1.4 L GAS, 4 Cyl 2.0 L GAS
- e-Golf | 2015-2019 | Limited Edition, SE, SEL Premium | BATTERY EV (EV/BEV)
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1-20 of 27 Results

Volkswagen Coolant Reservoir

A total system failure could result from a malfunctioning Volkswagen Coolant Reservoir, reducing driving comfort and posing a danger. It is for this reason that you should conduct regular inspections and replace such components in good time to enable your car to run smoothly and safely. OEM (Original Equipment Manufacturer) Volkswagen Coolant Reservoirs are perfect for motorists because they are the best quality parts produced as per the manufacturer's specifications; hence, they perform well and are reliable too, thus helping to retain the car's initial functionality as well as safety features. At VWPartsGiant.com, our genuine Volkswagen Coolant Reservoir supply indicates how much we care about the health of your vehicle. Additionally, our stock is vast, so every product will be easily accessible to you for finding and swapping without fear of making mistakes. With our user-friendly online catalog, it takes no time to identify the right spare part. Therefore, convenience accompanies servicing or maintaining a motorcar. You can rely on our OEM Volkswagen Coolant Reservoir to sustain the performance of your automobile.

Volkswagen Coolant Reservoir Parts and Q&A

Reservoir
1K0-121-407-F
Q: What precautions should be taken when disconnecting the battery and replacing the radiator and coolant reservoir on Volkswagen Jetta?
A:
If the battery is disconnected, several systems must be re-learned before they will work properly. For the replacement of the radiator shutter assembly (if equipped), follow the appropriate procedures. Begin by raising the front of the vehicle and securely supporting it on jackstands, then disconnect the cable from the negative terminal of the battery. Remove the under-vehicle splash shield and drain the cooling system, followed by removing the engine cover and cooling fan shroud. Disconnect the hoses from the radiator, being prepared for some coolant to spill, and then remove the front bumper cover. Next, remove the air guide fasteners and the air guides from each side of the condenser, followed by the condenser to radiator bolts. Remove the radiator mount bolts and push the radiator towards the rear until the upper mounts can be removed from the sides, then lift the radiator up and out of the lower mounts. Installation is the reverse of removal, and after refilling and bleeding the system, run the engine and check carefully for leaks. For specific engine types, remove the clips securing the hose connectors, disconnect the coolant temperature sensor electrical connector, and lift the clips securing the hose connectors to the charge air system circuit cooler. Remove the radiator mounting bolts, slide the radiator towards the engine until the upper mounts are free, and lift it out. Prior to installation, replace any damaged components. For the expansion tank, drain the cooling system until empty, detach the upper coolant hoses, disconnect the coolant level sensor connector, and remove the mounting screws to lift the expansion tank and disconnect the lower hose. Ensure the reservoir is clean before installation, which is the reverse of removal.
Reservoir
3B0-121-407-B
Q: How to replace the coolant reservoir and radiator on Volkswagen Passat?
A:
The steps involved in substituting the radiator include first lifting the front of the car and ensuring that it rests on jackstands and then emptying the cooling system. Place the radiator support panel in an accessible location and unscrew the upper and lower hoses of the coolant through prying the clip out of shape and removing the hoses off the radiator and the fan thermo switch electrical connector. In the cases of an automatic transaxle, un-hook transmission oil cooler lines at the lower section of the radiator. In cars that have air conditioning, remove the air conditioning line retaining clamps, loosen the condenser mounting bolts and unbreech the condenser and the radiator without breaking the lines and attach it to the body using wire so that it is not held loose. The second step is to remove the radiator mounting clips and the radiator out of the support panel. Prior to fitting the new radiator, any broken hose clips and fittings should be replaced and radiator checked and cleaned in case of leaks or other cooling problems. Installation is done in reverse sequence of removal and once we have installed, fill the system with correct antifreeze mixture and remove all the air in the cooling system. To perform the expansion tank, drain the system until it is dry, disconnect the coolant recovery hoses, disconnect the reservoir mounting bolts, lift the expansion tank off the firewall, and disconnect the coolant level sensor connector, and then leave the expansion tank out of engine compartment. The reservoir must be clean and free of debris before installation, and it is done in the same order as it is removed, too.