One Stop Solutions 99127 HVAC Heater Core

OE-Style Heater Core for Audi HVAC Repair

Restore cabin heat with this One Stop Solutions HVAC heater core, part number 99127. It is built to match original equipment form and function for select Audi applications, with aluminum construction and pressure testing for added confidence in fit and performance.

• Direct replacement heater core for OE-style HVAC service
• Aluminum core construction with cadmium-plated tubes inside and out
• Individually pressure tested before release
• Foam and related accessories included for installation support
• Cross-reference: Focus Auto Parts 99001

Detailed Product Information

One Stop Solutions 99127 is an HVAC heater core designed for select 1998-2005 Audi A6 Quattro, 1999-2005 Audi A6, 2001-2005 Audi Allroad Quattro, 2003-2004 Audi RS6, and 2002-2003 Audi S6 applications. This heater core uses aluminum in place of a copper-style design and is engineered to follow OE form and function for the factory HVAC system. The cadmium-plated tubes are intended to resist premature failure, and each unit is pressure tested individually before shipment.

For Audi A6 and Audi A6 Quattro heater core replacement, this part number 99127 provides a direct-fit service solution for restoring heat output and maintaining proper coolant-to-air transfer inside the HVAC case.

Common Repair Symptoms

• Weak or no cabin heat from the vents
• Coolant odor inside the vehicle
• Fogging or dampness from heater core leakage
• Uneven heater performance during cold weather
• Need for Audi A6 heater core replacement during HVAC repair

Installation Notes

Verify vehicle fitment before installation, especially on 1998-2005 Audi A6 Quattro and related models. Transfer the included foam and accessories as needed during HVAC case service, and inspect the cooling system for contamination or leaks before installing the new core. Proper coolant refill and system bleeding are important after heater core replacement.

Quality Assurance

Each One Stop Solutions heater core is individually pressure tested for leak resistance and built to OE-style dimensions and function. Part number 99127 is a direct replacement for a copper-designed heater core in the listed Audi applications.