Universal Air HT400091C HVAC Heater Core

BMW Heater Core Replacement

Universal Air HT400091C is an HVAC heater core for select BMW models from 2016-2021. It is a direct-fit heating system component for vehicles that need stable cabin heat and proper coolant-to-air heat transfer.

Compatible With BMW 530i, 540i, 740i, M5, M550i xDrive, and other listed applications, this heater core supports repair work on BMW HVAC systems where the original core is leaking, restricted, or no longer delivering heat evenly. Part number HT400091C is listed for multiple 5 Series, 7 Series, 8 Series, and M models.

Key Features

• HVAC heater core for select BMW applications
• Direct replacement part number HT400091C
• Fits a wide range of BMW sedan and Gran Coupe models
• Supports cabin heat output through the vehicle HVAC system
• Application-specific fitment for 2016-2021 BMW platforms

Detailed Description

Universal Air Heater Core HT400091C is built for BMW vehicles that use a heater core as part of the climate control system. The heater core transfers heat from engine coolant into the cabin air stream, making it a critical component for defrost performance and interior comfort. This part number HT400091C covers select BMW 530e, 530i, 540i, 740i, 750i, 840i, M5, M8, and related xDrive models.

Fits 2017-2020 BMW 530i, N/A. Fits 2017-2020 BMW 540i, N/A. Fits 2017-2020 BMW 740i, N/A. Fits 2018-2020 BMW M5, N/A. Fits 2016-2020 BMW 750i, N/A. Fits 2020 BMW 840i Gran Coupe, N/A. Fits 2017-2021 BMW M760i xDrive, N/A.

Common Repair Reasons

• Loss of cabin heat
• Coolant odor inside the vehicle
• Fogging or weak defrost performance
• Heater core leakage
• Restricted coolant flow through the HVAC system

Installation Notes

Verify the vehicle year, model, and drivetrain before ordering. Heater core replacement typically requires access to the HVAC case and careful handling of coolant lines and interior trim components. Confirm the existing core configuration against the original part number HT400091C before installation.

Quality Assurance

Universal Air supplies HVAC replacement components for service applications, and this heater core is cataloged for the listed BMW fitments to support accurate repair selection.