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Relays / Fuses
By OE Match
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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 944S2 3.0L 16V 1989-91
- 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)
This 14-pin plug connector with harness is a high-quality OE Match replacement electrical connector used in the engine wiring loom of multiple Porsche models. It replicates the original factory connector in design, pin layout, and fitment, providing a reliable connection between the engine harness and vehicle electrical system.
Fits:
Porsche 911 - 1970 to 1989
Porsche 911 turbo - 1975 to 1989
Porsche 914 -1970 to 1976
Porsche 924S - 1986 to1988
Porsche 928 - 1983 to 1995
Porsche 944S2 - 1985 to 1991
Porsche 964 - 1989 to 1994
Porsche 968 - 1992 to 1995
The connector provides a central electrical interface between the engine wiring loom and the vehicle’s main electrical system. It ensures consistent signal and power transmission to critical engine components, sensors, and control systems.
Function:
• Connects engine wiring loom to vehicle electrical system
• Maintains reliable electrical continuity across multiple circuits
• Prevents signal loss, voltage drop, and intermittent faults
• Supports stable engine operation and diagnostics
Over time, original connectors can suffer from heat exposure, corrosion, brittle plastic, or wiring fatigue. This replacement restores proper electrical integrity within the engine loom, helping to prevent intermittent faults, sensor errors, and poor engine performance. It is ideal for engine rebuilds, wiring repairs, or full loom restorations where dependable OE-level quality is required.
A degraded or damaged engine loom connector can cause a wide range of electrical issues, from poor engine running to complete system failure. Replacing it with a quality OE Match connector restores electrical reliability, improves long-term durability, and helps protect the engine management system from unpredictable faults.
When to replace:
• Cracked, brittle, or heat-damaged connector housing
• Corrosion or looseness at pin terminals
• Intermittent electrical faults or poor engine performance
• During engine loom repair or restoration
• When upgrading or refurbishing engine wiring
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161211305
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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
Fits:
Porsche 911 65-89
Porsche 911 (930) Turbo 1975-89
Porsche 914 1970-76
Porsche 924 S 1986-88
Porsche 944 1986-91
Porsche 964 1989-94
Porsche 968 1992-95
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90161233300
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 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)
The red fuel pump relay is an replacement designed to control and protect the fuel pump circuit on classic Porsche 911 models from 1975–89. Built to the same electrical specifications as the original red relay (previously 91161510801), it ensures reliable activation of the fuel pump, stabilises current delivery, and prevents pump operation under unsafe conditions.
Fits:
Porsche 911 1975 - 1989
Porsche 911 Turbo 3.0/3.3L 1975 - 1989
* Please check and match the part number of your relay in your car before ordering.
This red fuel pump relay:
• Controls power supply to the fuel pump, ensuring it only runs when the engine is operating or cranking
• Provides essential electrical protection by preventing voltage spikes and reducing load on ignition components
• Ensures stable fuel delivery for smooth starting, reliable idle and consistent engine operation
• Replaces weak, intermittent or failed original relays that can cause no-start symptoms, stalling or fuel-pressure loss.
A failing red fuel pump relay can cause:
• Intermittent or complete no-start conditions
• Engine stalling, especially when warm Loss of fuel pressure leading to hesitation or uneven running
• Electrical overheating or relay chatter Fuel pump running continuously - a significant safety risk
Replacing the relay restores reliable fuel delivery and ensures the fuel pump operates exactly as Porsche intended.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161510802
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 - 1970to 1989
Porsche 964 - 1990 to 1994
Porsche 968 - 1992 to 1995
Porsche 914 - 1970 to 1976
Porsche 924S - 1986 to 1988
Porsche 944 - 1982 to 1991
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90161233400
The product you are viewing cross references to these numbers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 930 Turbo 1975-89
* Please check and match the part number of your relay in your car before ordering.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93061711703
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)

Fits:
Porsche 911 - 1975 to 1977
Porsche 911 turbo - 1975 to 1977
Intermittent wiper relay wiring harness - 8 pole connector
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161205902
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
- 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)

Fits:
Porsche 911- 1974 to 1989
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161209306
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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 914 (1970-1976)
Fits:
Porsche 911 1969-89
Porsche 914 1970-76
FOR:
- horn
- blower
- headlight flasher
- fog lamp
- ignition coil
- series resistor
- injection system
- windscreen & rear window heating (100W)
- cigarette lighter
- high beam etc.
* Please check and match the part number of your relay in your car before ordering.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161510902
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
Wiper Interval Relay
The OE Match Wiper Interval Relay is a
high-quality OEM-style replacement. This relay controls the intermittent wiping function, ensuring
your windscreen wipers operate at the correct timed intervals during light rain
and changing weather conditions.
Fits:
- Porsche 911 1974-1975 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975 3.0L Turbo (930)
Diagram ref no 34
Manufactured to match the original specifications, this OE Match relay provides dependable performance, direct-fit installation and reliable operation, making it the ideal replacement for ageing or failed original relays.
What Does the Wiper Interval Relay Do?
The wiper interval relay is an essential component of your Porsche's electrical system. It controls the timing circuit that activates the intermittent wipe feature, allowing the wiper blades to pause between sweeps instead of operating continuously.
By regulating the delay between each wipe cycle, the relay helps maintain clear visibility during drizzle or mist while reducing unnecessary wear on the wiper motor and blades.
The relay is responsible for:
- Controlling intermittent windscreen wiper operation.
- Delivering consistent timed wipe intervals.
- Sending electrical signals to the wiper motor.
- Providing smooth, factory-correct wiper performance.
- Improving visibility and driving safety in variable weather conditions.
Why Do Wiper Interval Relays Fail?
Electrical relays naturally deteriorate over time, particularly in classic vehicles where components may have been in service for decades. Heat, vibration and moisture can all contribute to internal wear and eventual failure.
Common causes include:
- Burnt or worn internal electrical contacts.
- Ageing electronic components.
- Corrosion caused by moisture ingress.
- Heat damage from years of continuous operation.
- Fatigued solder joints and internal circuitry.
- Oxidised terminals leading to poor electrical connections.
Original relays fitted to 1974-1975 Porsche 911 models are now approximately fifty years old, making replacement a sensible preventative maintenance upgrade.
Symptoms of a Faulty Wiper Interval Relay
A failing relay can cause several noticeable problems,
including:
- Intermittent wipe function no longer operates.
- Wipers only work on continuous settings.
- Irregular or inconsistent wipe intervals.
- Delayed or erratic wiper activation.
- Wipers stopping unexpectedly during operation.
- Audible relay clicking without correct wiper movement.
- Complete loss of intermittent wipe functionality.
Replacing the relay is often the quickest and most effective way to restore normal operation.
When Should the Relay Be Replaced?
The OE Match Wiper Interval Relay should be replaced whenever intermittent wipe performance becomes unreliable or electrical testing confirms relay failure.
Many Porsche owners also choose to replace ageing relays during restoration projects or preventative maintenance to improve long-term reliability and reduce the risk of electrical faults.
A new relay helps restore dependable operation while preserving the original driving experience of your classic Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161814900
The product you are viewing cross references to these numbers
OEMatch Relays / Fuses — Fit, Function, Confidence
Relays and fuses protect and manage electrical circuits across Porsche models. OEMatch supplies relays and fuses selected for Porsche applications, with a wide catalogue including over 4,000 part numbers and 8,700 OE cross-references to support correct replacement and repair.
Available Types
- Blade fuses for low-current circuits.
- Cartridge and high-current fuses for power circuits.
- Micro fuses and fuse links used in compact fuse boxes.
- Power relays, micro relays and multi-pin relay modules for switching higher loads.
Understanding OEMatch Relays / Fuses
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original relays and fuses. OE (Original Equipment) refers to parts matching original specifications for the relays and fuses and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM relays and fuses engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Fuses act as the first line of defence by breaking the circuit when current exceeds safe levels, protecting wiring and modules. Relays use a low-current control signal to switch higher-current loads, allowing devices such as headlights, fuel pumps and cooling fans to run without overloading switches or control units.
Benefits Include
- Restored operation of electrical systems and accessories.
- Protection for wiring and expensive electronic modules.
- Reduced risk of fault-related damage and related downtime.
Why Relays / Fuses Wear and Fail
- Overcurrent or short circuits that blow fuses.
- Corrosion or moisture ingress causing poor connections.
- Worn or pitted relay contacts leading to intermittent operation.
- Vibration or mechanical stress loosening terminals and sockets.
The Importance of Replacing with OEMatch Relays / Fuses
Timely replacement maintains electrical integrity, prevents cascading failures and helps ensure systems perform as intended on Porsche models. Choosing parts selected for Porsche applications reduces the risk of incorrect ratings or poor fitment.
Advantages
- Precise fit and correct mounting for existing fuse boxes and relay sockets.
- Ratings and contact arrangements matched to typical Porsche circuits.
- Coverage for common Porsche models to aid straightforward replacement.