Nissens 70225 HVAC Heater Core

Nissens HVAC Heater Core for Audi A8

The Nissens 70225 HVAC heater core is built for 1997-2001 Audi A8 Quattro and 1997-1999 Audi A8 applications. With an aluminum core, aluminum tanks, and brazed cooling fins, it is engineered for efficient heat transfer in the vehicle’s climate control system.

Use this heater core when servicing the heating circuit on an Audi A8 or Audi A8 Quattro and you need a direct-fit thermal component from Nissens. Part number 70225 is built to match the listed fitment and OE-style application requirements.

Key Features

• HVAC heater core for Audi A8 and Audi A8 Quattro
• Aluminum core material for efficient heat exchange
• Aluminum tank construction
• Brazed cooling fins for a durable heat-transfer design
• Pipe included: No
• Cross-reference part numbers: 4D0819030, 811574

Detailed Description

Nissens 70225 is an HVAC heater core designed for the heating system in select Audi full-size sedans. The aluminum core and aluminum tank construction support consistent thermal performance, while the brazed cooling fins help maintain effective airflow and heat transfer through the heater assembly. This part is a practical replacement choice for Audi A8 and Audi A8 Quattro models that require a heater core matching the listed dimensions and application.

Nissens develops thermal management components with a focus on aftermarket fit and manufacturing consistency. Part number 70225 reflects that approach in a heater core built for the specified Audi A8 platform.

What It Helps Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Heater core leakage
• Restricted heat output from a clogged core
• HVAC performance loss in Audi A8 and Audi A8 Quattro models

Installation Notes and Tips

Verify the heater core dimensions, hose connections, and vehicle application before installation. This unit does not include pipes, so confirm the existing system configuration and transfer any required external components during service. Proper cooling system flushing and air bleeding after installation help protect the new heater core and restore normal heater operation.

Quality Assurance

Nissens is a recognized manufacturer of thermal and engine-efficiency components, and its products are developed and manufactured to consistent quality standards for aftermarket use. Part number 70225 is built to support the heating system in the listed Audi applications with the material and construction details specified above.