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

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.

Genuine Volkswagen Golf Coolant Reservoir

Coolant Tank Reservoir

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8 Coolant Reservoirs found

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Volkswagen Golf Reservoir Part Number: 1J0-121-407-F
$55.55 MSRP: $77.15
You Save: $21.60 (28%)
Ships in 1-2 Business Days
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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
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1999-2006 Volkswagen Golf | 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
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Volkswagen Golf Reservoir Part Number: 1K0-121-407-F
$58.43 MSRP: $81.16
You Save: $22.73 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2010-2014 Volkswagen Golf | Base, TDI | 4 Cyl 2.0 L DIESEL, 5 Cyl 2.5 L GAS
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Volkswagen Golf 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
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2020-2021, 2015-2018 Volkswagen Golf | 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
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Volkswagen Golf 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
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1998-1999 Volkswagen Golf | GL, GTI, K2, Wolfsburg Edition | 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS
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Volkswagen Golf 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
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1990-1997 Volkswagen Golf | 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
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Volkswagen Golf Reservoir Part Number: 5QM-121-407-C
$31.07 MSRP: $51.78
You Save: $20.71 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Tank; Expansion Tank, Reservoir
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2019-2021 Volkswagen Golf | S, SE, TSi | 4 Cyl 1.4 L GAS
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Volkswagen Golf Reservoir Part Number: 021-121-407
$49.42 MSRP: $68.63
You Save: $19.21 (28%)
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Product Specifications
- Other Name: Tank; Reservoir Tank
- Replaces: 021-121-407-B
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1995-1998 Volkswagen Golf | GTI VR6 | 6 Cyl 2.8 L GAS
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Volkswagen Golf Reservoir Part Number: 171-121-407-E
$16.69 MSRP: $22.80
You Save: $6.11 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank; Expansion Tank
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1985-1989 Volkswagen Golf | Base, GL, GT, GTI, GTI 16-Valve | 4 Cyl 1.6 L DIESEL, 4 Cyl 1.8 L GAS

Volkswagen Golf Coolant Reservoir

Choose OEM Coolant Reservoir for superior quality and long-lasting durability. They match the Volkswagen's factory specifications exactly and pass strict quality control. If you plan to replace Coolant Reservoir on your Golf, put OEM at the top of your list. You'll get the right fit, reliable performance, and peace of mind. We stock an extensive inventory of genuine Volkswagen Golf parts. It is easy to find what you need. You will love our competitive prices that help you save. No more hassle with returns or guesswork. Every part includes a warranty straight from the manufacturer. Get trusted quality, strong durability, and real value today.

Volkswagen Golf Coolant Reservoir Parts and Q&A

Reservoir
5Q0-121-407-M
Q: What precautions should be taken when disconnecting the battery and replacing the radiator and coolant reservoir on Volkswagen Golf?
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.