Air Conditioning Evaporator Performance Upgrade. Porsche 964 / 993  ❭  8368

CSF Performance A/C Evaporator

CSF is proud to introduce the OEM+ Performance A/C Evaporator for the Porsche 964 and 993 - a modern air conditioning upgrade designed to restore and dramatically improve cabin cooling performance in classic air-cooled 911s.

Fits:

• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93
• Porsche 964 (911) RS 3.6L 1991-93
• Porsche 964 (911) RS 3.8L 1991-93
• Porsche 964 (911) TURBO 3.3L 1991-93
• Porsche 964 (911) TURBO 3.6L 1991-93
• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) RS 1994-97
• Porsche 993 (911) C2S 1994-97
• Porsche 993 (911) C4S 1994-97
• Porsche 993 (911) TURBO 1994-96
• Porsche 993 (911) GT2 1994-97
• Porsche 993 (911) TURBO S 1994-97

Developed specifically for enthusiasts who want modern A/C efficiency without compromising originality, this advanced evaporator solves many of the common issues associated with ageing factory systems while significantly improving cooling performance with modern R134a refrigerant.

As Porsche 964 and 993 models continue to age, factory evaporators often become clogged, corroded, inefficient, or leak over time. A common issue on these vehicles is the appearance of white flakes or dust particles blowing through the cabin vents, caused by oxidation and corrosion inside the evaporator core.

Unlike modern aftermarket solutions, many replacement OEM evaporators no longer feature the original anti-corrosion coating due to environmental restrictions. As a result, even new OE units can begin oxidising shortly after installation, causing premature deterioration and recurring “white flake” issues.

The CSF evaporator was engineered specifically to eliminate these problems permanently while also improving cooling performance.

Modern Performance Cooling Technology

Leveraging decades of experience designing high-performance A/C condensers, CSF applied modern engineering and manufacturing techniques to completely redesign the original Porsche evaporator.

Working alongside Porsche specialists and development partner Motorsport Inc, CSF extensively tested and compared:
• Original OE evaporators
• Brand-new OEM replacement units
• The now-discontinued Griffiths evaporator

The result is a modern OEM+ evaporator that:
• Fits better than factory units
• Seals more effectively within the HVAC housing
• Provides significantly improved cooling efficiency
• Delivers superior long-term durability

Key Features & Improvements

• Designed for Porsche 964 and 993 models
• Modern parallel-flow dual-core evaporator design
• Approximately 2x greater cooling performance vs new OEM units
• Optimised specifically for R134a refrigerant systems
• Improved airflow and HVAC sealing efficiency
• Super-high pressure multi-channel microtube core technology
• Anti-corrosive powder-coated finish
• Eliminates common “white flake” vent issue
• More durable than factory evaporators
• OEM+ fitment and factory-style integration
• Lower cost than genuine Porsche replacement units

Why the CSF Evaporator Performs Better

Modern Parallel-Flow Core Design

The original Porsche evaporator uses outdated serpentine-style core technology originally developed for R12 refrigerant systems.

The CSF evaporator upgrades this to a modern parallel-flow dual-core design featuring:
• Increased surface area contact
• Improved refrigerant flow efficiency
• Enhanced thermal transfer
• Superior cooling performance with R134a refrigerant

No More White Flakes or Cabin Dust

One of the most frustrating issues on Porsche 964 and 993 models is white dust or flakes blowing from the dashboard vents.

This is caused by oxidation and corrosion inside the evaporator core.

The CSF unit solves this permanently with a durable anti-corrosive powder coat finish that protects the evaporator from moisture, oxidation, and corrosion — ensuring long-term reliability and cleaner cabin airflow.

Better Fitment = Better Cooling

Testing showed the CSF evaporator seals approximately twice as effectively as OEM or discontinued aftermarket units.

A superior seal improves airflow through the evaporator core, resulting in:
• Colder vent temperatures
• Improved cabin cooling
• Better HVAC system efficiency
• Reduced strain on the air conditioning system

Why Upgrade Your Porsche 964 / 993 Evaporator?

Restore Modern Cooling Performance

Designed specifically to improve R134a system efficiency.

Improve Long-Term Reliability

Eliminates corrosion and common evaporator failures.

Reduce Future Repair Costs

The evaporator sits deep within the HVAC suitcase behind the dashboard, requiring extensive labour to replace. Installing a long-term solution now prevents repeat failures later.