HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 92003 HVAC Heater Core
Part #: 92003

Four Seasons 92003 HVAC Heater Core

Heater Core
⚙️ 27 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heater Core
🚗Fitment: Audi, A4, A4 Quattro, S4, RS4, S3, and S6
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Heater Core Replacement for Audi Models

The Four Seasons Heater Core 92003 is designed to restore efficient heating performance in select Audi vehicles. Engineered with durable aluminum construction, this heater core ensures consistent warmth and reliable operation for your Audi A4, A4 Quattro, RS4, S3, and S4 models.

  • Core dimensions: 9-1/4 inches length, 5-3/4 inches width, 1-1/2 inches thickness
  • Constructed from corrosion-resistant aluminum material
  • Meets or exceeds OEM specifications for fit and function
  • Includes dual 3/4 inch (19.05 mm) inlet and outlet tubes
  • Designed specifically for HVAC heater core applications

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering dependable HVAC components that meet original equipment standards. This aluminum heater core model 92003 is part of that line, providing a direct replacement solution engineered to maintain proper heating system performance in compatible Audi vehicles. The product line emphasizes durability and precise fitment to ensure seamless integration with factory HVAC systems.

Product Details and Specifications

This heater core features a core height of 9.25 inches and a core width of 5.75 inches, with a depth of 1.5 inches, making it suitable for the specified Audi models. The aluminum core material offers resistance to corrosion and efficient heat transfer. Both inlet and outlet tubes measure 0.75 inches (19.05 mm) in diameter, matching OEM dimensions for straightforward installation. The part number 92003 identifies this specific heater core within the Four Seasons catalog.

Common Applications and Issues Addressed

  • Restores heating system functionality in Audi A4, A4 Quattro, RS4, S3, and S4 vehicles
  • Resolves heater core leaks causing coolant loss or interior fogging
  • Eliminates insufficient cabin heat due to clogged or damaged cores
  • Prevents overheating issues related to faulty heater cores
  • Replaces corroded or deteriorated aluminum cores to maintain HVAC efficiency

Installation Notes and Tips

  • Ensure compatibility with your specific Audi model and year before installation
  • Drain the cooling system prior to heater core removal to avoid spills
  • Handle the aluminum core carefully to prevent damage to fins and tubes
  • Inspect and replace any worn hoses or clamps during installation
  • Bleed the cooling system properly after installation to remove air pockets

Quality Assurance and Warranty Information

The Four Seasons Heater Core 92003 is manufactured to meet or exceed OEM standards, ensuring reliable performance and fitment. This part undergoes quality control inspections to verify material integrity and dimensional accuracy. While specific warranty details may vary, Four Seasons typically offers coverage against defects in materials and workmanship to support long-term use.

BrandFour Seasons
Part Number92003
PositionHeater Core
Adjustable Pipe PositioningNo
Core Depth IN1.5
Core Height IN9.250
Core MaterialAluminum
Core Width IN5.750
DescriptionHeater Cores
Length9-1/4
Meets / Exceeds OEM?Yes
StyleAluminum Heater Core
Thickness1 1/2
Tube 1 IN0.750
Tube 1 MM19.050
Tube 2 IN0.750
Tube 2 MM19.050
TypeHeater Core /Aluminum
Width5-3/4

This part fits 27 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2009AudiA4Convertible2.0LL4N/AHeater Core
2009AudiA4 QuattroConvertible2.0LL4N/AHeater Core
2009AudiA4 QuattroConvertible3.2LV6N/AHeater Core
2009AudiS4N/AHeater Core
2008AudiA4N/AHeater Core
2008AudiA4 QuattroN/AHeater Core
2008AudiRS4N/AHeater Core
2008AudiS4N/AHeater Core
2007AudiA4N/AHeater Core
2007AudiA4 QuattroN/AHeater Core
2007AudiRS4N/AHeater Core
2007AudiS4N/AHeater Core
2006AudiA4N/AHeater Core
2006AudiA4 QuattroN/AHeater Core
2006AudiS4N/AHeater Core
2005AudiA4N/AHeater Core
2005AudiA4 QuattroN/AHeater Core
2005AudiS4N/AHeater Core
2004AudiA4N/AHeater Core
2004AudiA4 QuattroN/AHeater Core
2004AudiS3N/AHeater Core
2004AudiS4N/AHeater Core
2004AudiS6N/AHeater Core
2003AudiA4N/AHeater Core
2003AudiA4 QuattroN/AHeater Core
2002AudiA4N/AHeater Core
2002AudiA4 QuattroN/AHeater Core

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

18123953999365510037022682315118E1820031901057791003920039872399373HT2179C

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.