Nissens 70515 HVAC Heater Core

Nissens 70515 HVAC Heater Core

The Nissens 70515 HVAC heater core is built for BMW 7 Series applications that need reliable cabin heat and stable thermal performance. With aluminum core and tank construction plus brazed cooling fins, it is engineered for efficient heat transfer in demanding heating system service.

Compatible with 1995-2001 BMW 750iL, 1996-2001 BMW 740iL, and 1997-2001 BMW 740i, this heater core is a direct-fit replacement for select BMW 740i, BMW 740iL, and BMW 750iL models.

Key Features

• Part number: 70515
• Aluminum core material for efficient heat exchange
• Aluminum tank material for consistent construction
• Brazed cooling fins for improved thermal transfer
• Core dimensions: 5.3100 in. height, 10.5500 in. length, 1.2600 in. width
• Pipe included: No
• Fits BMW 740i, BMW 740iL, and BMW 750iL applications

Detailed Description

Nissens 70515 is an HVAC heater core developed for BMW E38-era heating systems, including 1995-2001 BMW 750iL, 1996-2001 BMW 740iL, and 1997-2001 BMW 740i. The aluminum core and tank design supports efficient heat transfer, while brazed cooling fins help maintain consistent airflow through the heater assembly. Nissens focuses on thermal components built to the same standards expected in modern aftermarket service, and this heater core reflects that approach in a compact OE-style format.

This part cross-references Spectra Premium 98094 for the same application. The Nissens 70515 part number is also useful when verifying replacement needs against BMW heater core service references.

Common Repair Symptoms

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Fogging or film on the windshield from heater core leakage
• Coolant loss traced to the HVAC system
• Restricted heat output in BMW 740i, 740iL, or 750iL models

Installation Notes

Confirm vehicle fitment by year and model before installation. Inspect the HVAC housing, coolant hoses, and related seals for wear or contamination during heater core replacement. Because pipe included is listed as no, verify the existing connection setup and transfer any required external components from the original system as needed.

Quality Assurance

Nissens manufactures thermal management components with a focus on consistent material quality and application-specific fitment. The 70515 heater core is built as a replacement part for BMW 7 Series heating system service and follows Nissens' Genuine Nissens Quality standard across its product range.