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Relays / Sensors / Resistors
By OE Match
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
OE Match air conditioner relay for Porsche 968, 964, 993, 996, 997.1, Boxster, and Cayman models. This replacement electrical relay helps restore correct air conditioning system operation by controlling power supply to the relevant A/C circuit.
Fits:
For cars with air conditioner (M:573)
Porsche 968 1992 - 1995
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2006 - 2008
*** Please check and match the part number of your relay in your car before ordering ***
The air conditioner relay switches electrical power to the A/C system when requested by the climate control or air conditioning controls. A correctly working relay helps ensure the air conditioning system can engage and operate reliably.
Functions
• Replaces the air conditioner relay
• Helps control A/C system electrical switching
• Supports correct compressor or A/C circuit engagement
• Helps restore reliable air conditioning operation
• Suitable for fault diagnosis and A/C electrical repair
• OE Match replacement for Porsche climate control service
Why Replace This Part?
Air conditioner relays can fail due to age, heat, electrical load, corrosion, internal contact wear, or moisture exposure. A faulty relay may cause the A/C system to stop working, work intermittently, fail to engage, or show inconsistent cooling performance. Replacing the relay can help restore reliable electrical switching within the air conditioning system.
When to Replace This Part
• Air conditioning does not switch on
• A/C operation is intermittent
• Compressor or A/C circuit is not receiving power
• Climate control fault diagnosis points to relay failure
• Existing relay is corroded, overheated, or damaged
• A/C electrical repair or restoration is being carried out
• Preventive replacement is required during climate system service.
Where it fits on the car
This relay fits within the vehicle electrical relay / fuse system for the air conditioning circuit. Location can vary depending on model and year.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99965701890
The product you are viewing cross references to these numbers
OEMatch relays, sensors and resistors for Porsche models help regulate blower motors, temperature control and other electrical functions within climate and auxiliary systems. These components manage electrical flow, monitor conditions and adjust motor speeds to keep cabin systems responsive. OEMatch relays, sensors and resistors are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable.
Available Types- HVAC relays for fan and compressor control
- Blower motor resistors and resistor packs
- Cabin temperature, ambient and evaporator sensors
- Pressure and switch sensors for system monitoring
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original relays, sensors and resistors.
OE (Original Equipment) refers to parts matching original specifications for the relays, sensors and resistors and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM relays, sensors and resistors engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Relays, sensors and resistors control electrical power, provide feedback on temperature and pressure, and regulate motor speeds. Failures commonly result in intermittent fan operation, incorrect cabin temperature readings or complete loss of heating and cooling. OEMatch supplies a broad selection of Porsche-focussed parts and continues to develop new lines to support climate and electrical system repairs across model generations.
Benefits Include- Restores accurate fan and temperature control for consistent cabin comfort
- Reduces risk of electrical faults that can lead to blown fuses or motor damage
- Aids diagnostic accuracy when troubleshooting HVAC and electrical systems
- Corrosion or oxidation on terminals and connectors impeding electrical contact
- Overheating or short circuits from electrical surges damaging components
- Moisture ingress, condensation or environmental contamination
- Age-related sensor drift and resistors burning out under sustained load
Replacing worn relays, sensors and resistors restores accurate climate control, prevents secondary electrical damage and reduces the chance of intermittent faults that affect comfort and system reliability in Porsche models. Timely replacement supports correct diagnostics, avoids unnecessary component changes and helps maintain consistent operation of related systems.
Advantages- Manufactured to original-spec dimensions to fit factory mounting and connectors
- Designed for thermal and vibration resilience typical of vehicle environments
- Can be fitted using standard procedures; follow model-specific guidance for torque and reconnection checks
