Nissens 70527 HVAC Heater Core

Nissens 70527 Heater Core for BMW 325i and 330i

The Nissens 70527 HVAC heater core is built for 2006 BMW 325i, 325xi, 330i, and 330xi applications. It uses aluminum for both the core and tanks, with brazed cooling fins for efficient heat transfer in the cabin heating system.

Key Features

• Aluminum core material for lightweight thermal performance
• Aluminum tank construction for corrosion-resistant durability
• Brazed cooling fins for consistent heat exchange
• Direct-fit HVAC heater core for select 2006 BMW 3 Series models
• Part number 70527 for accurate ordering and catalog lookup

Detailed Product Information

Nissens 70527 is an HVAC heater core engineered for the heating circuit in select 2006 BMW 325i, 325xi, 330i, and 330xi vehicles. Nissens develops thermal management components with a focus on quality manufacturing and ongoing aftermarket coverage, and this heater core reflects that approach with aluminum construction throughout. The brazed fin design supports efficient heat transfer, helping restore proper cabin heat output when the original core is restricted, leaking, or no longer performing as expected. This part number 70527 also cross-references 811571 for the same application.

What This Heater Core Helps Address

• Weak or uneven cabin heat in a 2006 BMW 325i or 330i
• Coolant odor or moisture from a leaking heater core
• Restricted heat output caused by internal blockage
• Temperature inconsistency in BMW 325xi and 330xi HVAC operation
• Restoration of heater performance after core corrosion or age-related wear

Installation Notes and Tips

Verify vehicle fitment by year, make, and model before installation. Heater core replacement on BMW 3 Series vehicles typically requires access to HVAC components inside the dash area, so inspect related hoses, seals, and coolant condition during service. Flush the cooling system if contamination or debris is present, and confirm there are no leaks after reassembly.

Quality Assurance

Nissens is a market-focused thermal component manufacturer that develops and produces aftermarket parts to consistent quality standards. The 70527 heater core is built with aluminum core and tank materials and brazed cooling fins to support dependable HVAC service in the specified BMW applications.