Nissens 70531 HVAC Heater Core

Nissens 70531 HVAC Heater Core

The Nissens 70531 HVAC heater core is built with aluminum core and tank construction for efficient heat transfer in the cabin heating system. It is a direct-fit replacement for select BMW X5 and BMW X6 applications, including BMW X5 models with Four Zone Climate Control.

• Aluminum core material for thermal efficiency
• Aluminum tank material for durable HVAC service
• Brazed cooling fins for consistent heat exchange
• Pipe included for application-specific installation
• OE-style replacement for select BMW X5 and BMW X6 vehicles

Fitment Details

• Fits 2008-2019 BMW X6, N/A
• Fits 2007-2018 BMW X5, N/A
• Fits 2007-2013 BMW X5, N/A, Four Zone Climate Control

Product Overview

Designed for the HVAC system, this heater core transfers engine heat into the passenger compartment through the heater box. The brazed fin construction and aluminum materials support steady coolant-to-air heat exchange, helping restore proper cabin heat output in BMW X5 and BMW X6 models. Part number 70531 is also referenced in cross-application listings as 6968204 and 64116968204, and it cross-references OSC 98074 and Spectra Premium 98073 for the same application.

Common Symptoms It Can Address

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Fogging or film on interior glass from heater core leakage
• Reduced defrost performance
• Temperature imbalance in BMW X5 models with Four Zone Climate Control

Installation Notes

Verify the vehicle’s HVAC configuration before ordering, especially on BMW X5 applications with Four Zone Climate Control. Confirm hose routing, pipe orientation, and core dimensions against the original unit before installation. Proper system flushing and leak checks should be completed during replacement to help protect the new heater core and restore normal heater performance.

Quality Assurance

Nissens develops and manufactures thermal management components to high production standards, with a focus on aftermarket fit and function. Part number 70531 reflects that engineering approach for BMW X5 and BMW X6 heater core replacement applications.