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Relays / Fuses

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DISPLAYING 1 to 16 (of 28 products)
1 2
Special Order item
99965701890
Product Information
Product Information
Air conditioner relay.

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.

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Related, superseded, cross reference or alternative numbers for comparison.

99965701890
96461521500
99965701890

The product you are viewing cross references to these numbers
Special Order item
98661811103
Product Information
Product Information
Cabriolet Hood Relay / Convertible Top Control Relay
Genuine Porsche electrical control module that manages the powered opening and closing of the soft-top on Porsche Boxster 986 models. As the factory-specified replacement for earlier versions 98661811100 and 98661811102, this relay ensures correct sequencing, timing, and safety control of the convertible roof motors and microswitches.

Fits:
Porsche 986 Boxster 1997-99 (M439)
with option code: 439 - Electrical hood operation

* Please check and match the part number of your relay in your car before ordering.

Located in the relay panel, it serves as the central switching unit that coordinates roof operation with various vehicle inputs - including the handbrake, roof latch microswitch, and hydraulic or electric motor signals. Designed to exact Porsche specifications, it delivers reliable switching performance and long-term durability, essential for smooth and trouble-free convertible operation.

Aging relays often cause slow, erratic, or completely inoperative roof behaviour. Replacing it with this relay restores proper function and maintains full compatibility with the Boxster’s roof control system.

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Related, superseded, cross reference or alternative numbers for comparison.

98661811103
98661811102
98661811103
98661811100

The product you are viewing cross references to these numbers
Special Order item
99965701390
Product Information
Product Information
DME Relay Porsche.

porsche

Fits:
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2006>>
Porsche 997 Carrera MKI & MKII 2005>>
Porsche 997 Turbo 2005>>
Porsche 997 GT3 2007-11


* Please check and match the part number of your relay in your car before ordering.
99965701390/1
Product Information
Product Information
DME relay.

Fits:
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2006>>
Porsche 997 Carrera MKI & MKII 2005>>
Porsche 997 Turbo 2005>>
Porsche 997 GT3 2007-11


* 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.

99965701390
99965701390
9996570139

The product you are viewing cross references to these numbers
Special Order item
99661898003
Product Information
Product Information
Relay, Exhaust System Sports Version.
Cars WITH Sports Exhaust System ONLY!

Fits:

Porsche 986 Boxster 1997>>2005
Porsche 996 Carrera 3.4L / 3.6L 1997>>2005

NOTE: 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.

99661898003
99661898003
99661898002

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Special Order item
99960708400
Product Information
Product Information
Flat fuse 10A (19/2x5) for Porsche.

porsche

Fits:
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 981 Boxster 2012-16 incl. Spyder
Porsche 982 Boxster 2017>> incl. Spyder
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 981C Cayman 2014-16 incl. GT4
Porsche 982C Cayman 2017>> incl. GT4
Porsche 997.1 2005-08 all
Porsche 997.2 2009-12 all
Porsche 991.1 2012-16 all
Porsche 991.2 2017-19 all
Porsche 955 Cayenne 2003-06
Porsche 957 Cayenne 2007-10
Porsche 958 Cayenne 2011-18
Porsche 95B.1 Macan 2014-18
Porsche 95B.2 Macan 2018-21
Porsche 95B.3 Macan 2021>>
Porsche 970 Panamera 2010-16
Porsche Carrera GT 2004-06
Porsche 918 Spyder 2015

* Please check and match the part number of your fuse in your car before ordering.

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

99960708400
99960708400

The product you are viewing cross references to these numbers
Special Order item
99661510100
Product Information
Product Information
Fuel pump relay.

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 996 C2 / C4 / C4S 1998-05
Porsche 996 Turbo 2001-05
Porsche 996 GT3
Porsche Carrera GT 2004-06


* 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.

99661510100
99661510100

The product you are viewing cross references to these numbers
99661510100/1
Product Information
Product Information
Fuel pump relay.
The fuel pump relay is a precision replacement relay for the fuel-pump control circuit in the Porsche 986 Boxster and 996 911 (including Turbo and early Carrera GT) models. This relay controls the activation of the in-tank fuel pump, providing the necessary current to ensure correct fuel delivery under demand - making it vital for engine start-up, steady fuel pressure and safe operation.

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2 / C4 / C4S 1998 - 2005
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT3
Porsche Carrera GT 2004 - 2006

* Please check and match the part number of your relay in your car before ordering.

Position: Mounted in the front luggage compartment fuse/relay panel or subsystems - controls power feed to the fuel pump relay circuit.

 Function: When the ignition is turned on or engine is running, the signal from ECU or shift lever energises this relay, sending current to the fuel pump so fuel pressure builds before engine cranking - crucial for proper fuel system operation.

 Applications: Ideal when the original relay has failed, is intermittent, shows corrosion on contacts, causes fuel-pump drop-outs, engine stumbling, or fails the self-check.

The fuel pump relay is a critical yet often overlooked part of the fuel delivery system.
A failing relay may manifest as:
 Engine cranks but won’t start (fuel pump never powers)
 Fuel pump prime is silent when ignition is turned on
 Engine stalls at random after start due to loss of pump voltage
 Intermittent “no-fuel pressure” faults or ECU logged errors

Replacing the relay with a correct unit ensures the fuel pump receives the proper current, realises full system pressure, and avoids mis-diagnosis of fuel pump or ECU faults.

When to replace:
 Original relay is over 10 years old, exposed to heat or aftermarket modifications
 You’ve installed a new fuel pump but issue persists (relay may be the culprit)
 You’re diagnosing no-start or stall symptoms that point to fuel pressure drop-out
 You’re restoring or prepping your vehicle and want to replace all wear-prone electrical relays

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

99661510100
99661510100

The product you are viewing cross references to these numbers
Special Order item
99960708500
Product Information
Product Information
Fuse 15A for Porsche.

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2006>>
Porsche 993 1994-98 all models
Porsche 996 1998-04 all models
Porsche 997 MKI & MKII 2005>> all models
Porsche 970 Panamera 2010>>
Porsche Cayenne 955 & 957 2003>>
Porsche Carrera GT 2004-06

* Please check and match the part number of your fuse in your car before ordering.

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

99960708500
99960708500
99960700700
99960705800
N0171316
N01713112

The product you are viewing cross references to these numbers
Special Order item
99960708600
Product Information
Product Information
Fuse 20A for Porsche.

porsche

Fits:
Porsche 981 Boxster Spyder 2016
Porsche 982 Boxster 2017>>
Porsche 981C Cayman 2014-16 incl. GT4
Porsche 982C Cayman 2017>>
Porsche 991.2 2017-19
Porsche 991 Turbo 2014-20
Porsche 95B.1 Macan 2014-18
Porsche 95B.2 Macan 2019-21
Porsche 971 Panamera 2017>>
Porsche 918 Boxster Spyder 2015

* Please check and match the part number of your fuse in your car before ordering.

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

99960708600
99960708600

The product you are viewing cross references to these numbers
Special Order item
99960708700
Product Information
Product Information
Fuse 25A for Porsche.

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2006>>
Porsche 993 1994-98 all models
Porsche 996 1998-04 all models
Porsche 997 MKI & MKII 2005>> all models
Porsche 970 Panamera 2010>>
Porsche Cayenne 955 & 957 2003>>
Porsche Carrera GT 2004-06

* Please check and match the part number of your fuse in your car before ordering.

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

99960708700
99960708700

The product you are viewing cross references to these numbers
Special Order item
99960708800
Product Information
Product Information
Fuse 30A for Porsche.

porsche

Fits:
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2006>>
Porsche 993 1994-98 all models
Porsche 997 MKI & MKII 2005>> all models
Porsche 970 Panamera 2010>>
Porsche Cayenne 955 & 957 2003>>
Porsche Carrera GT 2004-06

* Please check and match the part number of your fuse in your car before ordering.

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

99960708800
99960708800

The product you are viewing cross references to these numbers
Special Order item
99960707200
Product Information
Product Information
Fuse 40A Large for Porsche

porsche

Fits:
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 981 Boxster 2012-16 incl. Spyder
Porsche 982 Boxster 2017>> incl. Spyder
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 981C Cayman 2014-16 incl. GT4
Porsche 982C Cayman 2017>> incl. GT4
Porsche 997.1 2005-08 all
Porsche 997.2 2009-12 all
Porsche 991.1 2012-16 all
Porsche 991.2 2017-19 all

* Please check and match the part number of your fuse in your car before ordering.

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

99960707200
99960708800

The product you are viewing cross references to these numbers
Special Order item
99960707300
Product Information
Product Information
Fuse E40A Large for Porsche

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 981 Boxster 2012-16 incl. Spyder
Porsche 982 Boxster 2017>> incl. Spyder
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 981C Cayman 2014-16 incl. GT4
Porsche 982C Cayman 2017>> incl. GT4
Porsche 993 1994-998 all
Porsche 996 1998-05 all
Porsche 997.1 2005-08 all
Porsche 997.2 2009-12 all
Porsche 991.1 2012-16 all
Porsche 991.2 2017-19 all
Porsche 955 Cayenne 2003-06
Porsche 957 Cayenne 2007-10
Porsche 958 Cayenne 2011-18
Porsche 970 Panamera 2010-16
Porsche 971 Panamera 2017-21

* Please check and match the part number of your fuse in your car before ordering.

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

99960707300
99960708800

The product you are viewing cross references to these numbers
Special Order item
99960708200
Product Information
Product Information
Fuse 5A for Porsche.

porsche

Fits:
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 981 Boxster 2012-16 incl. Spyder
Porsche 982 Boxster 2017>> incl. Spyder
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Porsche 981C Cayman 2014-16 incl. GT4
Porsche 982C Cayman 2017>> incl. GT4
Porsche 996 1998-05 all
Porsche 997.1 2005-08 all
Porsche 997.2 2009-12 all
Porsche 991.1 2012-16 all
Porsche 991.2 2017-19 all
Porsche 955 Cayenne 2003-06
Porsche 957 Cayenne 2007-10
Porsche 958 Cayenne 2011-18
Porsche 95B.1 Macan 2014-18
Porsche 95B.2 Macan 2018-21
Porsche 95B.3 Macan 2021>>
Porsche 970 Panamera 2010-16

* Please check and match the part number of your fuse in your car before ordering.

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

99960708200
99960708200

The product you are viewing cross references to these numbers
Special Order item
99960708300
Product Information
Product Information
Fuse 7.5A for Porsche.

porsche

Fits:
Porsche 986 Boxster 1997-04
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2006>>
Porsche 993 1994-98 all models
Porsche 996 1998-04 all models
Porsche 997 MKI & MKII 2005>> all models
Porsche 970 Panamera 2010>>
Porsche Cayenne 955 & 957 2003>>
Porsche Carrera GT 2004-06


* Please check and match the part number of your fuse in your car before ordering.

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

99960708300
99960708300

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 28 products)
1 2
Also found on these pages
About Relays / Fuses

Relays and Fuses – Electrical Protection and Performance for Porsche Vehicles

Relays and fuses are critical components in your Porsche’s electrical system, ensuring that power is delivered safely and reliably to every circuit. From the ignition and lighting systems to the fuel pump and cooling fans, these components protect wiring and electrical modules from overload, short circuits, and potential failure.

At Design911, we stock a comprehensive selection of genuine and high quality relays and fuses for all Porsche models - including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each part is built to the highest standards to ensure dependable performance and precise compatibility with your vehicle’s electrical system.

What Do Relays and Fuses Do?

Fuses act as the first line of defence in your vehicle’s electrical circuits. They break the circuit when current exceeds safe levels, preventing damage to components or wiring.

Relays
act as electronic switches that control high-current devices using low-current signals. They allow systems like headlights, fuel pumps, fans, and wipers to operate efficiently without overloading the control switches.

Together, they form a vital network that maintains safety, functionality, and reliability across your Porsche’s electrical system.

Why Do Relays and Fuses Fail?

Over time, electrical components are subject to wear, heat, and environmental factors that can lead to failure. Common causes include:

  • Overheating or overcurrent loads blowing the fuse.
  • Aging or corroded relay contacts leading to intermittent operation.
  • Moisture ingress or corrosion within the fuse box or relay socket.
  • Vibration or mechanical stress loosening connections.
  • Electrical short circuits caused by wiring faults or damaged insulation.

Symptoms of faulty relays or fuses can include malfunctioning lights, non-start conditions, intermittent accessory operation, or completely dead electrical systems.

Why Replace Faulty Relays and Fuses?

Replacing worn or damaged relays and fuses is essential to maintain your Porsche’s electrical integrity and prevent more serious system failures. Using quality replacements ensures proper current flow, system protection, and long-term reliability.

Benefits of replacement include:
Restored function of electrical systems and accessories.
Protection from wiring damage or electrical fires.
Enhanced safety and dependability.
High-level quality and fitment for lasting performance.

Every relay and fuse in this range is precision-tested and manufactured to match factory specifications, ensuring seamless compatibility and peace of mind on the road.

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