Volkswagen Passat B7 Cooling Radiator Coolant Unit 2.0 Diesel 3C0121253AR

Visual condition of the part

The product shows signs of use visible in the photos.

Volkswagen Passat B7 Cooling Radiator Coolant Unit 2.0 Diesel is an original cooling system component, designed specifically for 2.0 diesel engines. Thanks to its factory-spec construction, it ensures stable heat dissipation, which translates into a safe engine operating temperature and longer component lifespan. This used OEM component is a sensible choice for drivers looking for a proven and cost-effective solution while maintaining the proper operating parameters of the cooling system.

Specifications and technical data

• SKU: 3C0121253AR
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 3C0121253AR
• Substitutable numbers: 3C0121253AR, 3C0 121 253 AR
• Fuel type: Diesel
• Category: Radiators

Purpose and compatibility

The presented water radiator was developed for the Volkswagen Passat B7 with a 2.0 diesel engine. The design is adapted to the thermal characteristics of diesel units, which generate high thermal loads during highway driving, towing, or intensive city use. Using an original solution allows for maintaining proper coolant flow and correct pressure within the system.

Construction and performance parameters

The radiator belongs to the Water Radiators category, meaning it is responsible for heat exchange between the coolant and the air flowing over the front of the vehicle. Densely arranged channels and cooling fins provide a large heat dissipation surface, and matched connection ports allow for proper connection to the cooling system hoses. As a result, the diesel engine maintains a stable operating temperature both in city traffic and at higher speeds.

Original manufacturing under the Volkswagen brand guarantees compliance with the vehicle manufacturer's factory requirements, including flow parameters, pressure resistance, and compatibility with the factory fan and front end carrier.

Benefits of using an original radiator

Using this radiator in a Passat B7 with a diesel engine provides a number of practical benefits:

• maintaining the optimal operating temperature of the power unit under a wide range of loads,
• reducing the risk of engine overheating and associated costly repairs,
• proper cooperation with the factory thermostat, water pump, and fan,
• maintaining factory mounting geometry, which facilitates service and replacement.

A used OEM component is also a way to rationally reduce repair costs while maintaining the vehicle's original technical specifications.

Condition, installation, and practical application

The radiator comes from the used parts segment, making it an attractive choice for drivers who want to restore the full efficiency of the cooling system without investing in expensive aftermarket replacements. The design is prepared for installation in place of the factory radiator, maintaining existing mounting points and connections to hoses and accessories. With proper installation, the cooling system regains operational stability, and the diesel engine maintains the correct temperature during summer heat and intensive use.

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other components from the same group, such as cooling cores, cooling modules, or additional heat exchangers, check the available parts in the Volkswagen Water Radiators category.

Operation in high temperatures and savings

High external temperatures place particular strain on the cooling system in diesel engines, which is why an efficient water radiator is crucial for the safety of the power unit. A properly selected, used OEM component allows you to combine service cost savings with maintaining parameters close to factory specifications. To better understand how summer heat affects the cooling system and why used radiators and fans can be a sensible choice, it is worth reading the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.