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Porsche
Heating / Air Conditioning
Air con pipes
Air Conditioning Refrigerant Line. Porsche 996 C4S / 996 turbo › 99657309405
Air Conditioning Refrigerant Line. Porsche 996 C4S / 996 turbo - 99657309405
99657309405
Vehicle Group
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
Information
Air Conditioning Refrigerant Line
Fits
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
Diagram Ref No 11
What This Product Does
This line provides a sealed route for refrigerant travelling between designated components in the air-conditioning system. The supplied exploded-parts information describes the component as both a pressure line and a refrigerant line within the applicable 996 assemblies.
Functions
- Carries refrigerant through the air-conditioning circuit
- Connects the relevant factory climate-control components
- Helps retain the refrigerant charge within a sealed system
- Supports normal cooling and dehumidification when the system is correctly serviced
Technical Details
- Genuine Porsche component
- Part number: 99657309405
- Exploded-diagram descriptions: pressure line and refrigerant line
- Quantity shown: one per applicable diagram assembly
- Identified for C4S in the refrigerant circuit 996 1998–05 diagram
- Also referenced in the refrigerant circuit 996 TURBO 2001–05 diagram
Symptoms of Fault
- Cooling performance gradually becomes weaker or warm
- The system loses its refrigerant charge after servicing
- Oily residue or leak-detection dye appears near the line or connections
- Corrosion, abrasion, cracking or impact damage is visible
- Hissing may be present where a significant leak has developed
- Demisting performance is reduced when cooling and dehumidification are needed
Why Replacement Matters
A leaking or damaged line prevents the air-conditioning circuit from retaining the correct refrigerant charge. Renewing the affected component enables the system to be leak-tested, evacuated and recharged correctly rather than relying on repeated regassing. Inspect the connection seals, retaining supports and adjacent pipework during installation. Refrigerant recovery and charging require suitable air-conditioning service equipment.
FAQs
- Does weak cooling confirm that this line is faulty?
No. Refrigerant may escape from several points in the circuit, so diagnosis and leak testing should be completed before replacement. - Can the system be used without recharging after installation?
No. Once opened, the circuit must be evacuated, checked for leak tightness and filled with the specified refrigerant quantity. - Should the connection seals also be inspected?
Yes. Hardened or damaged O-rings can cause leakage even when the line itself remains sound. - How should compatibility be checked?
Confirm part number 99657309405 against the vehicle identification number, model year and exact air-conditioning configuration.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99657309405
99657309405
99657309403
The product you are viewing cross references to these numbers
Price: £525.77
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