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.

Genuine Volkswagen Jetta Radiator

Cooling Radiator

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41 Radiators found

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Volkswagen Jetta Radiator Part Number: 321-121-253-AL
$104.89 MSRP: $146.90
You Save: $42.01 (29%)
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Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1984-1992 Volkswagen Jetta | Base, Carat, GL, GLI, GLI 16-Valve, Wolfsburg Edition | 4 Cyl 1.6 L DIESEL, 4 Cyl 1.7 L GAS, 4 Cyl 1.8 L GAS
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Volkswagen Jetta Radiator Part Number: 1HM-121-253-C
$119.15 MSRP: $166.88
You Save: $47.73 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Replaces: 1H0-121-253-AK
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1995-1998 Volkswagen Jetta | Celebration Edition, City, GL, GLS, GLX, GT, Jazz, K2, TDI, Trek, Wolfsburg Edition | 4 Cyl 1.9 L DIESEL, 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS
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Volkswagen Jetta Radiator Part Number: 1J0-121-212-A
$143.99 MSRP: $201.67
You Save: $57.68 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Auxiliary Radiator
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1999-2004 Volkswagen Jetta | GLI, GLS, GLX | 6 Cyl 2.8 L GAS
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Volkswagen Jetta Radiator Part Number: 191-121-253
$156.60 MSRP: $219.33
You Save: $62.73 (29%)
ADD TO CART
Product Specifications
- Replaces: 191-121-251-F, 191-121-253-B
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1989-1992, 1985-1987 Volkswagen Jetta | Base, GL, GLI 16-Valve | 4 Cyl 1.6 L DIESEL, 4 Cyl 2.0 L GAS
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Volkswagen Jetta Radiator Part Number: 1K0-121-251-AN
$173.17 MSRP: $242.54
You Save: $69.37 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2005-2006 Volkswagen Jetta | TDI | 4 Cyl 1.9 L DIESEL
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Volkswagen Jetta Radiator Part Number: 191-121-251-C
$172.79 MSRP: $242.00
You Save: $69.21 (29%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1985-1992 Volkswagen Jetta | Base, Carat, GL, GLI, GLI 16-Valve, Wolfsburg Edition | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Volkswagen Jetta Radiator Part Number: 171-121-253-CL
$179.33 MSRP: $251.17
You Save: $71.84 (29%)
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Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1984 Volkswagen Jetta | Base, GL | 4 Cyl 1.6 L DIESEL
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Volkswagen Jetta Radiator Part Number: 1K0-121-251-EB
$209.90 MSRP: $293.99
You Save: $84.09 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Radiator Assembly
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2013-2016 Volkswagen Jetta | Hybrid, Hybrid SE, Hybrid SEL, Hybrid SEL Premium, S, SE | 4 Cyl 1.4 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 1.4 L GAS
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Volkswagen Jetta Radiator Part Number: 5Q0-121-253-H
$211.23 MSRP: $295.82
You Save: $84.59 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Auxiliary Radiator
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2014-2018 Volkswagen Jetta | GLI, GLI SE, GLI SEL | 4 Cyl 2.0 L GAS
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Volkswagen Jetta Radiator Part Number: 5Q0-121-251-HS
$215.15 MSRP: $301.34
You Save: $86.19 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Auxiliary Radiator, Intercooler
- Replaces: 5Q0-121-251-GF, 5Q0-121-251-EJ, 5Q0-121-251-GB
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2019-2021 Volkswagen Jetta | R-Line, S, SE, SEL, SEL Premium | 4 Cyl 1.4 L GAS
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Volkswagen Jetta Radiator Part Number: 1K0-121-251-CJ
$217.78 MSRP: $305.01
You Save: $87.23 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 1K0-121-251-R, 1K0-121-251-AR
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2005-2014 Volkswagen Jetta | 2.5, S, SE, SEL, Value Edition, Wolfsburg Edition | 5 Cyl 2.5 L GAS
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Volkswagen Jetta Radiator Part Number: 1K0-121-212-C
$219.09 MSRP: $306.85
You Save: $87.76 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Auxiliary Radiator
- Replaces: 1K0-121-212-B
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2006-2009 Volkswagen Jetta | 2.0T, GLI, SEL, Wolfsburg Edition | 4 Cyl 2.0 L GAS
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Volkswagen Jetta Radiator Part Number: 5Q0-121-251-GQ
$219.09 MSRP: $306.85
You Save: $87.76 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2019-2021 Volkswagen Jetta | R-Line, S, SE, SEL, SEL Premium | 4 Cyl 1.4 L GAS
View related parts
Volkswagen Jetta Radiator Part Number: 321-121-253-B
$215.02 MSRP: $301.15
You Save: $86.13 (29%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1984-1990 Volkswagen Jetta | Base, Carat, GL, GLI, GLI 16-Valve, Wolfsburg Edition | 4 Cyl 1.7 L GAS, 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Volkswagen Jetta Radiator Part Number: 1J0-121-253-R
$252.86 MSRP: $345.44
You Save: $92.58 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1999-2005 Volkswagen Jetta | GL, GLI, GLS, 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
View related parts
Volkswagen Jetta Radiator Part Number: 1K0-121-251-AB
$255.55 MSRP: $349.11
You Save: $93.56 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 1K0-121-251-BK, 1K0-121-251-N, 1K0-121-251-EH, 1K0-121-251-DM
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2006-2014 Volkswagen Jetta | 2.0T, GLI, S, SEL, TDI, TDI Cup Edition, TDI Premium, Wolfsburg Edition | 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS
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Volkswagen Jetta Radiator Part Number: 823-121-251-D
$227.09 MSRP: $318.05
You Save: $90.96 (29%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1984-1990 Volkswagen Jetta | Base, Carat, GL, GLI, GLI 16-Valve, Wolfsburg Edition | 4 Cyl 1.7 L GAS, 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
View related parts
Volkswagen Jetta Radiator Part Number: 5Q0-121-251-HQ
$259.59 MSRP: $354.62
You Save: $95.03 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Auxiliary Radiator, Intercooler
- Replaces: 5Q0-121-251-FB, 5Q0-121-251-HP, 5Q0-121-251-GC, 5Q0-121-251-GG
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2019-2024 Volkswagen Jetta | R-Line, S, SE, SEL, SEL Premium, Sport | 4 Cyl 1.4 L GAS, 4 Cyl 1.5 L GAS
View related parts
Volkswagen Jetta Radiator Part Number: 5QM-121-251-AA
$272.37 MSRP: $372.07
You Save: $99.70 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2022-2024 Volkswagen Jetta | GLI Autobahn | 4 Cyl 2.0 L GAS
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Volkswagen Jetta Auxiliary Radiator Part Number: 5QM-121-251-R
$272.37 MSRP: $372.07
You Save: $99.70 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Radiator
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2022-2024 Volkswagen Jetta | S, SE, SEL, Sport | 4 Cyl 1.5 L GAS

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1-20 of 41 Results

Volkswagen Jetta Radiator

The main heat exchanger in the Volkswagen Jetta is the Radiator which prevents damage to the engine and helps to transfer surplus heat from the liquid coolant and release it to the outside air. A pump forces the coolant into the high temperature engine passages within the closed engine bay and through the Radiator core, consisting of small tubes and spaced fins; as the Volkswagen Jetta sedan travels, the forward rush of air and an electric fan sweep over the spaced fins, taking the heat away, and the fluid returns to the pump and passes through the cool engine passages again. The design resembles the larger Volkswagen cooling policies that focus on airflow in aluminium fins. Early prototypes of this model applied the heavier copper and brass cores; however, the current designs use lightweight aluminium cores to achieve good convection. Electric fans also replaced the coolant pumps that applied energy during cruising, as the fans could spin only when sensors detected an elevated coolant temperature. No matter the type, each unit operates under the same principle, which takes the temperature difference between hot coolant and cooler ambient air to maintain operating temperatures within a safe range between about two hundred degrees Fahrenheit. Without a healthy Radiator, it is possible that an engine, from the inability to dissipate heat in a short time, will overheat, bend parts, or experience expensive malfunctions. Every Volkswagen is reliable due to routine inspections of the coolant and hose status. Although the shape has been adapted to accommodate front end layout variations, the crossflow layout of most generations of Volkswagen Jetta has the inlet and outlet tanks located oppositely to ensure even distribution of coolant and uniform thermal control in the whole core.

Choose OEM Radiator 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 Radiator on your Jetta, 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 Jetta 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 Jetta Radiator Parts and Q&A

Radiator
1K0-121-251-AB
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.