Nissens 70522 HVAC Heater Core

Nissens 70522 HVAC Heater Core for BMW

The Nissens 70522 HVAC heater core is built for BMW heating system service where reliable cabin heat and stable coolant-to-air transfer matter. It uses an aluminum core and aluminum tanks with brazed cooling fins for efficient thermal performance in a compact design.

• Aluminum core material for heat transfer and corrosion resistance
• Aluminum tank construction for a lightweight, durable assembly
• Brazed cooling fins for consistent airflow through the heater core
• Core dimensions: 5.5100 in. height, 10.2400 in. length, 1.0200 in. width
• Pipe included: No
• Direct replacement heater core for select BMW 5 Series, 6 Series, M5, and M6 applications

Detailed Product Overview

Built by Nissens, part number 70522 reflects the brand’s focus on thermal management components for aftermarket service. This HVAC heater core is engineered with aluminum core and tank construction and brazed cooling fins to support efficient heat exchange inside the vehicle’s HVAC system. It is a practical replacement choice for BMW models including the 2004-2007 BMW 525i, 2004-2007 BMW 530i, 2004-2005 BMW 545i, 2004-2005 BMW 645Ci, 2006-2007 BMW 525xi, 2006-2007 BMW 530xi, 2006-2010 BMW 550i, 2006-2010 BMW 650i, 2006-2010 BMW M5, 2006-2010 BMW M6, 2008 BMW 528xi, 2008 BMW 535xi, 2008-2010 BMW 528i, 2008-2010 BMW 535i, 2009-2010 BMW 528i xDrive, and 2009-2010 BMW 535i xDrive. This part number 70522 also cross-references OSC 98068 for the same application.

What This Heater Core Helps Address

• Weak or uneven cabin heat output
• Restricted coolant flow through the heater core
• Internal heater core leakage
• HVAC performance loss caused by a damaged or clogged core
• Temperature inconsistency in BMW heating systems

Installation Notes and Tips

Verify vehicle fitment by year and model before installation. Inspect hoses, seals, and surrounding HVAC components during replacement, and confirm the cooling system is properly filled and bled after service. Because pipes are not included, reuse or source the required connections as needed for the specific vehicle application. Fits 2004-2007 BMW 525i, N/A; fits 2004-2007 BMW 530i, N/A; fits 2006-2010 BMW 550i, N/A; fits 2006-2010 BMW M5, N/A.

Quality Assurance

Nissens develops thermal management components for aftermarket use with a focus on consistent manufacturing standards and application coverage. The 70522 heater core is built to match the demands of select BMW HVAC systems and is supported by Nissens’ Genuine Nissens Quality approach.