Description
Audi A4 A/C Evaporator for Sale: Revitalize Your Audi A4’s Cooling System
The evaporator is one of the unsung hero components of the cooling system on the Audi A4. This unsung hero is responsible for converting liquid refrigerant into gas, which more significantly absorbs heat from the cabin air. Located strategically inside the climate control system, this evaporator ensures efficient heat transfer to keep the inside of the A4 comfortable and refreshing during even the hottest days.
This evaporator is designed to Audi’s exacting standards and blends in seamlessly with your remaining A/C components to deliver both reliability and long service life. For an Audi enthusiast, the installation of a high-quality evaporator is an essential step toward preserving comfort and functionality in your A4.
Audi A4 A/C Evaporator: The Heart of Your Cooling System
The Audi A4 A/C evaporator is an essential component at the core of the vehicle’s cooling system. This component performs the fundamental activity of converting refrigerant from liquid form to gaseous form, which facilitates absorption of heat from the cabin air. Due to its position within the climate control system, it allows for proper heat transfer , the A4’s air conditioning cools and freshens the interior for the occupants.
Manufactured to Audi standards, the evaporator is built to become a cohesive part of the rest of the A/C equipment and to offer durability in addition to functionality.
About the Audi A4 and Audi B8 Chassis
This evaporator covers the B8 chassis Audi platform:
Audi A4 Chassis Generations
B5 chassis (1996-2001): First A4 generation
B6 chassis (2001-2005): Second A4 generation
B7 chassis (2005-2008): Third A4 generation
B8 chassis (2008-2016): Fourth A4 generation , THIS LISTING
B9 chassis (2016+): Fifth A4 generation, current
B8 Chassis Applications (Primary Fitment)
Audi A4 (2009-2016): Standard A4 sedan and Avant wagon
Audi S4 (2009-2016): Performance variant with 3.0 TFSI V6 supercharged
Audi A5 (2008-2017): 2-door coupe variant
Audi S5 (2008-2017): Including the B8 S5 V8 (2008-2012) and later 3.0 TFSI V6 supercharged S5
Cross-Reference to Audi S5 V8
Notably, this evaporator covers the famous B8 chassis Audi S5 V8 (2008-2012). See our separate Audi S5 V8 Engine listing for the related 4.2 FSI V8 engine (354 HP, naturally aspirated). The B8 chassis shared between A4/S4/A5/S5 means the same evaporator works across all these applications.
About the A/C Evaporator
The evaporator is the heat absorption component of the A/C system:
How the Evaporator Works
1. Receives cold, low-pressure liquid refrigerant from the expansion valve
2. Refrigerant evaporates inside the evaporator tubes (changes from liquid to gas)
3. As refrigerant evaporates, it absorbs heat from surrounding cabin air
4. Cabin air cools as it passes through the evaporator fins
5. Condensation forms on the cold evaporator surface (water vapor from air)
6. Condensation drains through the integrated drainage system
7. Refrigerant exits as low-pressure gas, returning to compressor
Why the Evaporator Is Critical
Primary cooling component: Where actual heat exchange with cabin air occurs
Dehumidification function: Removes moisture from cabin air
Air filtration enhancement: Cabin air passes through fins
Inside HVAC housing: Difficult to access for repair
Position in Vehicle
Cabin-mounted: Inside HVAC housing under dashboard
Behind cabin air filter: Clean air passes through
Above floor drain: Condensation drains externally
Fitment Disclosure: B8 Chassis (Not B5)
Important clarification: while the product page database lists “1996 Audi A4” (which would be the original B5 chassis), the product description body explicitly lists the broader B8 chassis compatibility:
Audi A4 (2009-2016)
Audi S4 (2009-2016)
Audi A5 (2008-2017)
Audi S5 (2008-2017)
The confirmed primary fitment is the B8 chassis, not the B5. Buyers should verify their specific Audi model and year against this fitment list. If you have a B5 chassis A4 (1996-2001), B6 (2001-2005), or B7 (2005-2008), call (240) 301-0095 for our chassis-specific evaporator availability.
B8 Chassis Engine Options Across A4/S4/A5/S5
The same evaporator works across various B8 chassis engine options:
Audi A4 B8 (2009-2016)
Vehicle Compatibility
Direct Fit (B8 Chassis Primary):
| Audi A4 (B8 chassis) | 2009-2016 with factory A/C , the primary application |
|---|---|
| Audi S4 (B8 chassis) | 2009-2016 with 3.0 TFSI V6 supercharged engine |
| Audi A5 (B8 chassis) | 2008-2017 (2-door coupe variant) |
| Audi S5 (B8 chassis) | 2008-2017 (including B8 S5 V8 2008-2012 and later 3.0 TFSI V6 supercharged) |
| Audi A4 Allroad | B8 chassis based, generally compatible |
| NOT Compatible | Audi A4 B5 (1996-2001), B6 (2001-2005), B7 (2005-2008), B9 (2016+) , different chassis use different evaporators |
| Cross-Reference | See our Audi S5 V8 Engine listing for the B8 S5 V8 (2008-2012) related engine information |
Condition and Inspection
Pressure tested for leaks using nitrogen or dry compressed air
Fin condition inspected (no bent fins, no impact damage, no corrosion)
Inlet and outlet fittings verified (no cross-threading, no damage)
Integrated drainage system function checked
Sealed construction integrity confirmed
No internal contamination from prior system failure
Aluminum construction verified
Multi-path flow design verified
No visible cracks or punctures
Brazed joints condition assessed
Core dimensions verified (10-14″ L, 6-10″ W, 2-4″ H)
B8 chassis fitment confirmed for A4/S4/A5/S5 applications
Anti-corrosion coating condition assessed
Specifically for B8 chassis A4 (2009-2016), S4 (2009-2016), A5 (2008-2017), S5 (2008-2017)
Pressure tested for leaks on every unit
Fin condition inspected
Inlet/outlet fittings verified
Integrated drainage function checked
No internal contamination from prior failures
R-134a and R-1234yf compatible
EPA Section 609 compliance information provided
Receiver drier replacement guidance
Cross-reference assistance for A4 generations (B5/B6/B7/B8/B9)
Cross-reference to Audi S5 V8 Engine (batch 48) for related B8 S5 information
Audi B8 chassis specialist support team
Free shipping all 50 states
15 day replacement warranty on defects
No core charge, keep your old evaporator
Ryan Lewis (verified owner) –
It works as intended, providing the necessary cooling for my system. The fit was accurate, and the setup was relatively simple. While it handles the job adequately, don’t expect any dramatic improvements or additional features compared to the original. It’s a practical, no-frills replacement that keeps your A/C system functioning properly.
Derek Thompson (verified owner) –
The component’s high-quality construction and precise fit have greatly enhanced the cooling performance. The installation process was straightforward and hassle-free, with no issues at all. For anyone looking to boost their A/C system’s efficiency and reliability, this evaporator is a solid investment that really delivers.