A/C condenser O-ring, 11.00 x 2.50 NX. Porsche 987.2 Boxster / 981 / 982 / 991.1 / 991.2 / 997.2  ›  99970755741

Radiator air conditioning (air con) condenser desiccator, also know as the receiver/dryer.
We recommend changing the receiver/dryer when changing the AC radiator.

(also purchase 2 o-rings Part No 99970726240)

Fits:
Porsche 968 1992 - 1995
Porsche 964 1993 >>
Porsche 993 C2, C4, Turbo
Porsche 996 C2, C4, GT2, GT3, Turbo
Porsche 997 Turbo
Porsche 997 C2, C2S, C4, C4S,
Porsche 991 Turbo
Porsche 991 C2, C2S, C4, C4S,
Porsche Boxster 986, 987, 981, 718 (982) 1997>>
Porsche Cayman 987C, 981C, 718C (982C) 2005>>

Diagram Ref No 3.

Related reference numbers
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94457314301

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O-Ring for Radiator Air Conditioning (Air Con) and pipe,  23.8 x 2.4 mm
The Porsche Genuine OE O-Ring Seal (Part No. 99970743941) is a precision-engineered sealing ring used within the air conditioning (A/C) system, specifically at the radiator (condenser) and pipe connections. It is designed to provide a tight, leak-free seal between A/C components.
Sold individually

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 982 Boxster 2017>>
Porsche 987C.1 Cayman 2006 - 2008
Porsche 981C Cayman 2014 - 2016
Porsche 982C Cayman 2017>>
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 997.2 2009 - 2012
Porsche 991.1 2012 - 2016
Porsche 991.2 2017 - 2019

Diagram ref no 17

This O-ring seals the junction between the air conditioning condenser (radiator) and associated refrigerant pipes, preventing leaks of refrigerant gas.

By maintaining a sealed system, it ensures proper cooling performance, system pressure, and efficiency of the vehicle’s climate control system.

Functions & Technical Role
•  Refrigerant sealing: Prevents gas leaks at A/C connections
•  Pressure retention: Maintains correct system pressure
•  Thermal resistance: Designed to withstand heat and cooling cycles
•  System protection: Prevents contamination and moisture ingress
•  OEM precision: Exact dimensions (approx. 23.8 x 2.4 mm) for proper fitment

Fitment / Position on car
•  Fitting position: Air conditioning system
•  Location: Between A/C condenser (radiator) and refrigerant pipes/hoses
•  System: Climate control / air conditioning refrigerant circuit

O-rings in A/C systems are exposed to pressure, refrigerant chemicals, and temperature cycles, which can cause them to harden or fail over time. A worn or damaged seal can lead to:
•  Loss of refrigerant gas
•  Reduced or no air conditioning performance
•  Increased system pressure issues
•  Costly A/C system repairs

Replacing with a genuine Porsche OE O-ring ensures proper sealing, restores cooling efficiency, and protects the entire A/C system.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99970743941

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Radiator Air Conditioning (Air Con) Condenser.

Fits:
Porsche 991.2 Carrera 2017>>
Porsche 718 (982) Boxster 2017>>
Porsche 718C (982C) Cayman 2017>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

Price is for each.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9P1820411

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Radiator air conditioning (air con) condenser desiccator, also know as the receiver/dryer.
We recommend changing the receiver/dryer when changing the AC radiator.

(also purchase 2 o-rings Part No 99970726240)

Fits:
Porsche 968 1992 - 1995
Porsche 964 1993 >>
Porsche 993 C2, C4, Turbo
Porsche 996 C2, C4, GT2, GT3, Turbo
Porsche 997 Turbo
Porsche 997 C2, C2S, C4, C4S,
Porsche 991 Turbo
Porsche 991 C2, C2S, C4, C4S,
Porsche Boxster 986, 987, 981, 718 (982) 1997>>
Porsche Cayman 987C, 981C, 718C (982C) 2005>>

Diagram Ref No 3.

Also known as the A/C desiccator or condenser dryer, this component filters refrigerant and removes moisture, ensuring the system operates efficiently and reliably.

Location: In the A/C system, mounted in line between the condenser and the expansion valve

What this product does:
•  Removes moisture and contaminants from the refrigerant
•  Acts as a reservoir for refrigerant in the A/C system
•  Protects the compressor and other A/C components from damage caused by water or debris
•  Helps maintain cold, efficient air conditioning

Over time, the receiver/drier becomes saturated with moisture or clogged with debris, reducing cooling efficiency and potentially damaging the A/C compressor. Replacing it with an OE Match unit during A/C service or after opening the system ensures long-lasting cooling performance, reliability, and protection for expensive components.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94457314301

The product you are viewing cross references to these numbers