Nissens 70517 HVAC Heater Core

Nissens 70517 Heater Core for BMW V8 Sedans

The Nissens 70517 HVAC heater core is built for BMW luxury sedans that need reliable cabin heat and stable thermal performance. It uses aluminum for both the core and tanks, with brazed cooling fins for efficient heat transfer in a compact design.

Compatible with 2002-2005 BMW 745i, 2002-2005 BMW 745Li, 2004-2006 BMW 760i, 2003-2008 BMW 760Li, 2006-2009 BMW 750i, and 2006-2009 BMW 750Li. This part cross-references Spectra Premium 98092 for the same application.

Key Features

• HVAC heater core for BMW heating system service
• Aluminum core and aluminum tank construction
• Brazed cooling fins for efficient heat exchange
• Compact core dimensions: 7.0900 in. height, 10.1600 in. length, 1.0200 in. width
• No pipes included
• Nissens part number 70517

Detailed Description

Nissens 70517 is an aluminum HVAC heater core engineered for BMW applications that require consistent heat output through the vehicle’s climate control system. The brazed-fin construction supports efficient thermal transfer, while the aluminum core and tanks provide a lightweight, corrosion-resistant design suited to modern HVAC service. For BMW 745i, 745Li, 760i, 760Li, 750i, and 750Li models, this heater core is a direct-fit service component for restoring cabin heat performance.

Nissens develops thermal management components with a focus on quality manufacturing and ongoing aftermarket coverage. The 70517 heater core reflects that approach with a service-ready design for BMW heating system repair and replacement.

Common Issues This Part May Resolve

• Weak or inconsistent cabin heat
• Coolant odor inside the cabin
• Fogging from heater core leakage
• Reduced HVAC heating performance
• Heat loss caused by a restricted or damaged heater core

Installation Notes and Tips

• Verify vehicle fitment by year and model before installation.
• Inspect the HVAC system for coolant contamination or residue before replacing the core.
• Flush the cooling system if debris or corrosion is present.
• Confirm hose and connection condition, since pipes are not included.
• Bleed the cooling system carefully after installation to remove trapped air.

Quality Assurance

Nissens manufactures thermal management components to consistent production standards, and the 70517 heater core is part of that OE-focused aftermarket range. It is built with aluminum materials and brazed-fin construction for dependable service in BMW heating system repairs.