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Porsche > 928 (1978-1995) > 928S2 4.7L 1984-86 > Electrical & Relays >

Relays / Fuses

Relays / Fuses

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DISPLAYING 33 to 36 (of 36 products)
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Seat heating relay. Porsche 911 / 928 / 959 / 944 - 92861852100
1
Seat heating relay. Porsche 911 / 928 / 959 / 944
Special Order item
92861852100
Product Information
Product Information
Seat heating relay only for Porsche with seat heating (M139/340)

porsche

Fits:
Porsche 911 (1984 to 1989)
Porsche 928 (1985 to 1986)
Porsche 959 (1987 to 1988)
Porsche 944 (1985 to 1988)

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Related, superseded, cross reference or alternative numbers for comparison.

92861852100
92861852100

The product you are viewing cross references to these numbers
Seat heating relay. Porsche 911 / 928 / 959 / 944 - 92861852100
2
Seat heating relay. Porsche 911 / 928 / 959 / 944
92861852100/1
Product Information
Product Information
Seat heating relay only for Porsche with seat heating (M139/340)

Fits:
Porsche 911 (1984 to 1989)
Porsche 928 (1985 to 1986)
Porsche 959 (1987 to 1988)
Porsche 944 (1985 to 1988)

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Related, superseded, cross reference or alternative numbers for comparison.

92861852100
92861852100

The product you are viewing cross references to these numbers
Spare bulb and fuse kit (12 Volt). Porsche 928 - PCG92810000, PCG92810001
1
Spare bulb and fuse kit (12 Volt). Porsche 928
Special Order item
PCG92810000
Product Information
Product Information
Spare bulb and fuse kit (12 Volt).

porsche

For use on
Porsche 928 (1978 - 1995)

The set comprises:

2x high beam/low beam light (H4 60/55W),
2x indicator light,
reversing light,
fog light (21W),
2x tail/brake light (21/4W),
1x licence plate light (5W),
2x front position light,
side indicator (4W),
2x rear position light (10W),
2x safety fuse (8A),
2x safety fuse (16A),
2x safety fuse (25A),
2x blade-type fuse (7.5A),
2x blade-type fuse (15A),
2x blade-type fuse (25A),
1x blade-type fuse (30A),
1x blade-type fuse (40A).

The packaging comprises a white Porsche Classic designer metal box with foam inserts.

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Related, superseded, cross reference or alternative numbers for comparison.

PCG92810000
PCG92810000
PCG92810001

The product you are viewing cross references to these numbers
Spare light box for Porsche 928 - PCG92810000, PCG92810001
5
Spare light box for Porsche 928
Special Order item
PCG92810001
Product Information
Product Information
Set of light bulbs and fuses (12 volts), specially put together for the Porsche 928. The bulbs and fuses are stored in a metal box in Historic Porsche Red, with raised Porsche logo in White and a foam insert inside.

porsche

For use on
Porsche 928 (1978 - 1982)
Porsche 928 S (1980 - 1986)
Porsche 928 S4 (1987 - 1991)
Porsche 928 GTS (1992 - 1995)


Contents of the set:

1x high beam/low beam bulb H4 60/55W
2x indicator, brake, reversing light bulbs P21W
1x tail light bulb R5W
1x tail light bulb R10W
1x rear fog/tail light bulb P21/4W
1x parking light, side indicator bulb T4W
1x number plate light bulb C5W
1x 1A FK2 safety fuse
1x 5A FK2 safety fuse
1x 7.5A FK2 safety fuse
1x 10A FK2 safety fuse
1x 15A FK2 safety fuse
1x 20A FK2 safety fuse
1x 25A FK2 safety fuse
1x 30A FK2 safety fuse
1x 8A torpedo safety fuse
1x 16A torpedo safety fuse
1x 25A torpedo safety fuse

Additional information: Excluding France.

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

PCG92810001
PCG92810000
PCG92810001

The product you are viewing cross references to these numbers
DISPLAYING 33 to 36 (of 36 products)
1 2 3
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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