What precautions should be taken when disconnecting the battery and removing the heater core on Volkswagen Jetta?

In case the battery is removed, a number of systems have to be re-trained before they could have been functional. The first step is to take the engine cover off and unplug the cable on the negative terminus of the battery. Cooling system should be emptied and fresh coolant should be preserved to be reused, and the used antifreeze should be disposed in an effective manner. The next step is to remove battery and battery tray and identify the heater hoses, then loosen the locking clips and loosen the hoses at the core of heater inlet and outlet at the engine side of firewall and ensure that they are now attached to their original positions to ensure that the system functions. Squeegee the heater core tubes as much as possible then seal off the open tubes with a suction gun. Disassemble the lower side trim panels of the center console, as well as the user knee bolster and bracket of the driver. In models with an auxiliary heating element, remove the connector wire of the heating element and the ground wire and then remove the heating element after making sure that it is cool to prevent an accident like burns. Cover the carpeting using plastic and rags to avoid spillages of the coolant. Disconnect core coolant tubes by pushing the tab on the upper line clamp up, and screw-type clamp on the lower line up preparing to spill coolant. Once the heater core cover fasteners are loosened and the cover has been removed, the heater core should be drawn out of the housing when all the available coolant is emptied. Installation is the opposite of removal, however, the heater core pipes and core have to be surrounded by installed insulating or sealing material of the original. The last step is to refill and bleed the cooling system and then to check the engine operation.

Genuine Volkswagen Jetta Heater Core

HVAC Heater Core

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

5 Heater Cores found

View related parts
Volkswagen Jetta Core Part Number: 1H1-819-031-B
$197.35 MSRP: $276.40
You Save: $79.05 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Heater Core; Core
- Replaces: 1H1-819-031-A, 191-819-031-F
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1984-1999 Volkswagen Jetta | Base, Carat, Celebration Edition, City, GL, GLI, GLI 16-Valve, GLS, GLX, GT, Jazz, K2, Limited Edition, TDI, Trek, Wolfsburg Edition | 4 Cyl 1.6 L DIESEL, 4 Cyl 1.7 L GAS, 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 Core Part Number: 1J1-819-031-B
$222.52 MSRP: $311.65
You Save: $89.13 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Heater Core; Blower Motor, Core
- Replaces: 1J1-819-031-A
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1999-2005 Volkswagen Jetta | 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
View related parts
Volkswagen Jetta Heater Core Part Number: 5Q0-819-031-B
$222.52 MSRP: $311.65
You Save: $89.13 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 5Q0-819-031
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 2019-2024 Volkswagen Jetta | 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
View related parts
Volkswagen Jetta Heater Core Part Number: 5C0-819-031
$229.66 MSRP: $321.65
You Save: $91.99 (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:
- 2010-2018 Volkswagen Jetta | Base, GLI, GLI SE, GLI SEL, Hybrid, Hybrid SE, Hybrid SEL, Hybrid SEL Premium, S, SE, SE Sport, SEL, SEL Premium, Sport, TDI, TDI Premium, TDI S, TDI SE, TDI SEL, 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 2.0 L DIESEL, 4 Cyl 2.0 L GAS, 5 Cyl 2.5 L GAS
View related parts
Volkswagen Jetta Core Part Number: 171-820-041-A
$137.09 MSRP: $192.00
You Save: $54.91 (29%)
ADD TO CART
Product Specifications
- Other Name: Heater Core; Core
- Warranty: This genuine part is guaranteed by Volkswagen's factory warranty.
Fits the following Vehicles:
- 1984 Volkswagen Jetta | Base, GL, GLI | 4 Cyl 1.6 L DIESEL, 4 Cyl 1.7 L GAS, 4 Cyl 1.8 L GAS

Volkswagen Jetta Heater Core

Volkswagen Jetta Heater Core is intended to convert unwanted engine heat into comfortable interior heat and a fog-free windshield on a cold ride. This small radiator is installed under the dashboard, where aluminum or brass tubes filled with hot coolant from the engine water pump are connected to the interior blower fan, so the air that passes through the fins rapidly picks up heat before it flows out into the passenger compartment. Since the component serves as a second radiator, it has the ability to assist the engine in losing excess heat in cases of high demand. Volkswagen couples the core to simple slide-style controls in older cars, which activate or deactivate a valve or air-mix door to control the temperature, with newer Volkswagen climate systems using electromechanical actuators, thermistors, and optional dual-zone logic to provide much finer comfort. Models with air conditioning initially cool incoming air at the evaporator, then pass it over the Heater Core to warm and dry the airflow and minimize window fog. Regular replacement of coolant is important, as corrosion, mineral scale, or electrolysis may block passages or generate leakage, which may require removal of the dashboard for service. The underlying principle of the heat exchange has remained the same, but Volkswagen was able to optimize the interfaces and control hardware of the Heater Core over the years, allowing later cabins of the Jetta to warm up faster and refine the control range of the core, without changing the basic design.

Choose OEM Heater Core 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 Heater Core 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 Heater Core Parts and Q&A

Heater Core
5C0-819-031
Q: What precautions should be taken when disconnecting the battery and removing the heater core on Volkswagen Jetta?
A:
In case the battery is removed, a number of systems have to be re-trained before they could have been functional. The first step is to take the engine cover off and unplug the cable on the negative terminus of the battery. Cooling system should be emptied and fresh coolant should be preserved to be reused, and the used antifreeze should be disposed in an effective manner. The next step is to remove battery and battery tray and identify the heater hoses, then loosen the locking clips and loosen the hoses at the core of heater inlet and outlet at the engine side of firewall and ensure that they are now attached to their original positions to ensure that the system functions. Squeegee the heater core tubes as much as possible then seal off the open tubes with a suction gun. Disassemble the lower side trim panels of the center console, as well as the user knee bolster and bracket of the driver. In models with an auxiliary heating element, remove the connector wire of the heating element and the ground wire and then remove the heating element after making sure that it is cool to prevent an accident like burns. Cover the carpeting using plastic and rags to avoid spillages of the coolant. Disconnect core coolant tubes by pushing the tab on the upper line clamp up, and screw-type clamp on the lower line up preparing to spill coolant. Once the heater core cover fasteners are loosened and the cover has been removed, the heater core should be drawn out of the housing when all the available coolant is emptied. Installation is the opposite of removal, however, the heater core pipes and core have to be surrounded by installed insulating or sealing material of the original. The last step is to refill and bleed the cooling system and then to check the engine operation.