Nissens 707289 HVAC Heater Core

Nissens 707289 HVAC Heater Core

The Nissens 707289 HVAC heater core is built for BMW heating system service with aluminum core and tank construction, brazed cooling fins, and integrated pipes. It is a direct-fit replacement for select BMW X5, 525i, and 530i applications, including models without automatic temperature controls.

• Aluminum core material for efficient heat transfer
• Aluminum tank material for consistent thermal performance
• Brazed cooling fins for durable heat exchange construction
• Inlet pipe diameter: 0.94
• Outlet pipe diameter: 0.94
• Pipe included: Yes
• OE cross-reference: 64118385689

Vehicle Fitment

• Fits 2001-2006 BMW X5, N/A, Exc. Automatic Temperature Controls
• Fits 2001-2003 BMW 525i, N/A, Exc. Automatic Temperature Controls
• Fits 2001-2003 BMW 530i, N/A, Exc. Automatic Temperature Controls

Built for BMW X5 heater core replacement and BMW 525i heater core service, this Nissens 707289 unit follows the dimensions and connection layout needed for the listed applications. Core measurements are 6.1800 in. height, 9.0200 in. length, and 1.1800 in. width, helping support proper fit within the HVAC case. Nissens develops thermal components with a focus on aftermarket fit and manufacturing consistency, and this heater core reflects that approach for BMW heating repair work.

Common Repair Uses

• Loss of cabin heat
• Coolant odor inside the vehicle
• Heater core leakage
• Poor defrost performance caused by weak heater output
• Restricted coolant flow through the HVAC heater circuit

Installation Notes

Verify vehicle equipment before ordering, especially the note excluding automatic temperature controls. Confirm inlet and outlet pipe size, core dimensions, and HVAC case layout against the removed part before installation. Flush the cooling system and inspect hoses, clamps, and coolant condition during heater core replacement to help prevent repeat contamination.

Quality Assurance

Nissens positions this part within its Genuine Nissens Quality standard, with products developed and manufactured to consistent thermal-component specifications for aftermarket use.