Nissens 70228 HVAC Heater Core

Nissens 70228 HVAC Heater Core

The Nissens 70228 HVAC heater core is an aluminum replacement component for vehicles that need reliable cabin heat and stable coolant-to-air transfer. It is built with aluminum core and tank construction and brazed cooling fins for efficient thermal performance in the heater box.

Compatible with select Audi Q3, Audi TT Quattro, Volkswagen Tiguan, and Volkswagen Jetta applications, this heater core is a direct-fit style solution for common HVAC service work. The Nissens 70228 is also cross-referenced to Valeo 812254 for the same application.

Key Features

• Aluminum core and aluminum tank construction
• Brazed cooling fins for consistent heat exchange
• Core dimensions: 7.2800 in. H x 6.9300 in. L x 1.2600 in. W
• Pipe included: No
• OE-style replacement for select Audi and Volkswagen HVAC systems
• Part number: 70228

Detailed Description

Nissens develops thermal management components for aftermarket service, and the 70228 heater core reflects that focus with a lightweight aluminum design and brazed fin construction. In HVAC service, the heater core transfers heat from engine coolant into the cabin air stream, helping restore proper interior heating performance when the original unit is restricted, leaking, or no longer transferring heat efficiently. This part number 70228 is used across multiple Audi and Volkswagen platforms, including Audi A3, Audi TT, Audi Q3, Volkswagen Golf, GTI, Jetta, Tiguan, Eos, CC, and related models listed in the fitment data.

This part cross-references Valeo 812254 for the same application.

What It Is Used For

• Restoring weak or uneven cabin heat
• Replacing a leaking heater core that can cause coolant loss
• Addressing fogging or sweet coolant odor inside the vehicle
• Correcting restricted coolant flow through the HVAC heater circuit
• Repairing heating performance in Audi and Volkswagen HVAC systems

Installation Notes and Tips

Verify the vehicle’s HVAC configuration and compare the core dimensions before installation. This heater core does not include pipes, so reuse or source the required vehicle-specific connections as needed. Because heater core replacement often requires access through the HVAC case, inspect related seals, hoses, and coolant condition during service. Confirm fitment carefully for applications such as 2015-2018 Audi Q3, 2006-2013 Audi A3, 2010-2014 Volkswagen Golf and GTI, and 2006-2011 Volkswagen Jetta.

Quality Assurance

Nissens Automotive manufactures thermal and engine efficiency components with a focus on consistent aftermarket quality control. The 70228 heater core is produced to support dependable heat transfer and fitment across the listed Audi and Volkswagen applications.