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- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Fits:
Porsche 911 - 1965 to 1968
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90150408520
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
The OE Match Flasher Relay (4 Pin Connection) is a high-quality replacement electrical component designed to control the operation and flashing sequence of the vehicle's indicator and hazard warning light systems. Manufactured to OE specifications for fit, function and reliability, this relay ensures the correct flashing rate and dependable operation of the vehicle's signalling system.
Fits:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
The flasher relay is responsible for interrupting and restoring electrical current at precise intervals, creating the flashing action required for turn signals and hazard lights. Reliable operation of this component is essential for vehicle safety, visibility and legal road compliance.
What This Product Does:
- Controls the flashing operation of the turn signal indicators.
- Operates the hazard warning light system.
- Maintains the correct indicator flash rate.
- Regulates electrical current flow to the signalling circuits.
- Helps ensure other road users are aware of driver intentions.
- Supports safe and legal vehicle operation.
- Provides reliable indicator and hazard light functionality.
Symptoms Of Wear Or Failure:
- Turn signals not operating.
- Hazard warning lights failing to function.
- Indicators flashing too quickly (hyperflashing).
- Indicators flashing too slowly.
- Intermittent indicator operation.
- Indicators remaining illuminated without flashing.
- Audible clicking noise absent or irregular.
- Complete failure of turn signal and hazard light systems.
Why Replacement Matters:
- Flasher relays are subjected to repeated electrical switching cycles, heat and vibration throughout their service life. Over time, internal contacts and electronic components can wear, causing inconsistent operation or complete failure.
- A faulty flasher relay can prevent turn signals and hazard lights from functioning correctly, reducing vehicle visibility and increasing the risk of accidents. In addition to creating a safety concern, defective indicators may also result in the vehicle failing roadworthiness inspections or not complying with legal requirements.
- Replacing a worn or malfunctioning flasher relay restores correct indicator and hazard light operation, ensuring safe communication with other road users. An OE Match replacement provides factory-style fitment, reliable performance and long-term durability, helping maintain the safety and functionality of your Porsche's electrical system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91461830312
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Air Conditioning Relay
Restore reliable operation of your Porsche air conditioning
system with this OE Match Air Conditioning Relay for Porsche 911 models from
1974 to 1988. Designed to OE specifications, this essential electrical
component controls power delivery within the air conditioning system, ensuring
the compressor, blower and associated components operate correctly when cooling
is required.
Fits:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1988 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1988 3.3L Turbo (930)
* Please check and match the part number of your relay in your car before ordering.
Although small and often overlooked, the air conditioning relay plays a critical role in the operation of the vehicle's climate control system. A faulty relay can prevent the air conditioning system from functioning correctly, leading to intermittent cooling, compressor failure to engage or complete loss of A/C operation.
Manufactured to OE Match standards, this replacement relay provides dependable performance and factory-correct fitment for maintenance, fault diagnosis and restoration projects.
What Does the Air Conditioning Relay Do?
The air conditioning relay acts as an electrically controlled switch within the A/C system.
Its primary functions include:
- Controlling power to the air conditioning system
- Activating the compressor circuit
- Supporting blower motor operation
- Protecting electrical circuits
- Managing high-current loads safely
- Ensuring reliable A/C engagement
- Supporting climate control functionality
The relay allows low-current control circuits to safely operate higher-current air conditioning components.
Why Do Air Conditioning Relays Fail?
Like all electrical relays, air conditioning relays experience wear throughout their service life.
Common causes of failure include:
- Contact wear
- Heat-related deterioration
- Electrical arcing
- Internal corrosion
- Moisture ingress
- Age-related component fatigue
- Voltage fluctuations
- Extended periods of operation
Over time, relay contacts can become worn or contaminated, resulting in unreliable operation.
Symptoms of a Faulty Air Conditioning Relay
Common warning signs include:
- Air conditioning not switching on
- Compressor failing to engage
- Intermittent cooling performance
- Blower operation faults
- Clicking noises from the relay
- Unreliable climate control operation
- Electrical system fault diagnosis issues
- Complete A/C system inactivity
Because relay failures can mimic other air conditioning faults, they are often checked early during diagnosis.
When Should the Air Conditioning Relay Be Replaced?
Replacement is recommended when:
- Diagnosing air conditioning faults
- Compressor engagement becomes intermittent
- Air conditioning stops functioning
- Electrical testing identifies relay failure
- Restoring a Porsche 911
- Performing preventative maintenance
- Refurbishing the climate control system
Many specialists replace ageing relays during electrical restoration work to improve long-term reliability.
Why Replacement Matters
Replacing a failing relay can restore proper operation of the entire air conditioning system.
Benefits include:
- Reliable compressor engagement
- Consistent cooling performance
- Improved electrical reliability
- Reduced risk of intermittent faults
- Enhanced climate control operation
- Improved driving comfort
- Better diagnostic accuracy
- Long-term system dependability
For classic Porsche 911 models, maintaining reliable electrical components helps preserve both usability and originality.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161510302
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- 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 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- 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
- Porsche 914 (1970-1976)
Fits:
Porsche 911 1970-89
Porsche 964 1990-94
Porsche 968 1992-95
Porsche 914 1970-76
Porsche 924S 1986-88
Porsche 944 1982-91
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90161233000
The product you are viewing cross references to these numbers