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Washer pumps / bottles / jets

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DISPLAYING 1 to 14 (of 14 products)
Special Order item
477955481
Product Information
Product Information
Check Valve for Windscreen washer (L-Shape)
This is a Genuine Porsche OE check valve / L-shape washer valve for the windscreen washer system. It is designed as a small inline valve fitted into the washer-fluid hose circuit.  The L-shaped design allows the washer hose to be routed neatly while maintaining correct washer-fluid flow direction.
Sold individually, quantity required depends on model and washer system layout

Fits:
Porsche 911 1981 - 1989
Porsche 964 1989 - 1994
Porsche 968 >> 1993
Porsche 924 1977 - 1988
Porsche 928 1978 - 1986
Porsche 944 1983 - 1991

Diagram ref no 29

This valve fits in the windscreen washer-fluid hose system, between the washer fluid supply and the windscreen washer jets. It is used as an inline check valve/connector in the front washer pipework and helps maintain correct fluid direction and hose routing.

The washer check valve can become blocked, brittle, cracked or internally worn over time. When it fails, the washer jets may respond slowly, spray weakly, leak fluid back through the line or stop delivering washer fluid correctly. Replacing the valve with a Genuine Porsche OE L-shape check valve helps restore correct washer-fluid flow and keeps the windscreen washer system operating as intended. This is especially important for safe visibility in poor weather or dirty road conditions.

When to replace:
  If the washer jets have delayed spray after activation
  If washer-fluid pressure is weak or inconsistent
•  If fluid drains back from the washer lines
•  If the original valve is cracked, brittle or leaking
  If the washer hose connection is loose or damaged
  During washer hose, washer jet or washer pump repairs
  When restoring the windscreen washer system to OE specification.

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Related, superseded, cross reference or alternative numbers for comparison.

477955481
477955481

The product you are viewing cross references to these numbers
477955481/1
Product Information
Product Information
Check Valve for Windscreen washer (L-Shape)
This OE Match L-shape check valve is a replacement one-way valve used in the windscreen washer system on selected Porsche models. It is designed to control washer fluid flow through the washer hose circuit and helps prevent fluid from draining back into the reservoir.
Sold individually, quantity required depends on model and washer system layout

Fits:
Porsche 911 1981 - 1989
Porsche 964 1989 - 1994
Porsche 968 >> 1993
Porsche 924 1977 - 1988
Porsche 928 1978 - 1986
Porsche 944 1983 - 1991

Diagram ref no 29

The check valve allows washer fluid to flow in one direction toward the washer jets while stopping reverse flow when the washer system is not in use. This helps keep fluid closer to the spray nozzles, improving washer response when the windscreen washer is activated.

Functions:
Controls one-way washer fluid flow
 Helps prevent washer fluid from draining back through the hose
 Supports faster washer jet response
 Helps maintain washer system pressure
 Reduces delay before fluid reaches the windscreen
 Helps prevent air pockets in the washer line
 OE Match replacement for the original L-shape washer check valve.

Why Replace This Part?
A faulty check valve can allow washer fluid to drain back into the system, causing delayed spray, weak washer jet output, or no fluid delivery at first activation. The valve can also become blocked, cracked, brittle, or leak due to age, washer fluid additives, and engine bay heat. Replacing the check valve helps restore reliable washer operation and keeps the windscreen cleaning system working correctly.

When to replace:
  Washer fluid takes too long to reach the windscreen
  Washer jets spray weakly or inconsistently
  Fluid drains back after the washer system is used
  The valve is cracked, leaking, blocked, or brittle
  Washer hoses have been replaced or removed
  The washer system has air in the lines
  The windscreen washer system is being restored or repaired.

Where it fits on the car
This L-shape check valve fits in the windscreen washer hose circuit, between the washer reservoir/pump and washer jets. Depending on the model and washer hose layout, it may be positioned near the washer nozzles, under the front bonnet, or along the washer fluid line.

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477955481
477955481

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Special Order item
PCG02030110
Product Information
Product Information
Fabric hose for wiper system, 3 m

porsche

Fits:
Porsche 911 Carrera (1974 - 1989)
Porsche 911 Turbo (1975 - 1989)
Porsche 924 (1976 - 1985)
Porsche 924 S (1986 - 1988)
Porsche 924 Turbo (1979 - 1982)
Porsche 928 (1978 - 1982)
Porsche 928 S (1980 - 1986)
Porsche 944 (1982 - 1985) excluding Turbo

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

PCG02030110
PCG02030110
99918172240

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Special Order item
477955183
Product Information
Product Information
Headlamp washer jet pressure control valve. 
Fits - left or right

porsche

Fits:
Porsche 911 1978-89
Porsche 944
Porsche 924
Porsche 928

Click 'Zoom in' for large parts diagram.
Diagram ref No. 10

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

477955183
477955183

The product you are viewing cross references to these numbers
Special Order item
191955681
Product Information
Product Information
Headlamp washer pump. 

porsche

Fits:
Porsche 911 1974-79 (Original pump is no longer available. This is retrofit pump)
Porsche 911 1980-89
Porsche 924 1979-85
Porsche 924S 1986-88
Porsche 928 1978-95
Porsche 944 1982-91
Porsche 964 1989-94

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

191955681
477955679A
191955681

The product you are viewing cross references to these numbers
191955681/1
Product Information
Product Information
Headlamp washer pump.

Fits:

Porsche 911 1974-79 (Original pump is no longer available. This is retrofit pump)
Porsche 911 1980-89
Porsche 924 1979-85
Porsche 924S 1986-88
Porsche 928 1978-95
Porsche 944 1982-91
Porsche 964 1989-94


Please also add to basket connector plug 171909 to match the pump connector.



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

191955681
477955679A
8TW004764021
92862819100
191955681

The product you are viewing cross references to these numbers
Special Order item
91162874901
Product Information
Product Information
Valve washer bottle pipe. 

porsche

Fits:
Porsche 911 - 1974 to 1989
Porsche 924 - 1976 to 1985
Porsche 924S - 1986 to 1988
Porsche 944 - 1985 to 1991

Click 'Zoom in' for large parts diagram.
Diagram ref no 3


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91162874901
91162874901
91162874900

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Special Order item
431955465B
Product Information
Product Information
Washer Pump Grommet for Various Porsches.

porsche

Fits:
Porsche 911 1984-89
Porsche 928 1987-95
Porsche 944 89-91
Porsche 964
Porsche 993
Porsche 986
Porsche 987
Porsche 996
Porsche 997
Porsche 970 Panamera

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

431955465B
431955465B

The product you are viewing cross references to these numbers
Special Order item
94462806101
Product Information
Product Information
Water reservoir for windscreen washer system.
For cars WITH headlamp washer jets.

porsche

Fits:
for for vehicles with headlight washer system
Porsche 924 S (1988)
Porsche 944/2 (1988 to 1991)


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

94462806101
94462806000
94462806100
94462806101

The product you are viewing cross references to these numbers
Special Order item
94462806000
Product Information
Product Information
Water reservoir for windscreen washer system
For cars WITHOUT headlamp washer jets.

porsche

Fits:
for vehicles without headlight cleaning system
Porsche 924 S (1988)
Porsche 944/2 (1988 - 1991)


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

94462806000
94462806000
94462806100
94462806101

The product you are viewing cross references to these numbers
Special Order item
9286280770070B
Product Information
Product Information
Windscreen washer jet.

porsche

Fits:
Porsche 911 1985>> LEFT or RIGHT
Porsche 944 1985>> LEFT or RIGHT
Porsche 924 1985 LEFT or RIGHT
Porsche 924S 1986-88 LEFT or RIGHT
Porsche 928 1992-93 LEFT or RIGHT
Porsche 968 1992-93 LEFT or RIGHT

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

9286280770070B
9286280770001C
9286280770070B

The product you are viewing cross references to these numbers
Special Order item
9446280770001C
Product Information
Product Information
Windscreen washer jet.
Fits - Right

porsche

Fits:
Porsche 944 1985>>
Special Order item
92862817202
Product Information
Product Information
Windscreen Washer pump.

Fits:
Porsche 924S 1988>>
Porsche 928 1987-92
Porsche 944 1988-91
Porsche 964 1989-92


Diagram ref no 3.

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

92862817202
92862817201
92862817202

The product you are viewing cross references to these numbers
92862817202/1
Product Information
Product Information
Windscreen washer pump.

Fits:
Porsche 924S 1988>>
Porsche 928 1987-92
Porsche 944 1988-91
Porsche 964 1989-92

Click 'Zoom in' for large parts diagram.
Diagram ref no 3.

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

92862817202
92862817201
92862817200
92862817202

The product you are viewing cross references to these numbers
DISPLAYING 1 to 14 (of 14 products)
About Washer pumps / bottles / jets

Washer Pumps, Washer Bottles & Washer Jets – Clear Vision for Every Drive

Washer pumps, bottles, and jets are key components of your Porsche’s windscreen cleaning system. They work together to deliver washer fluid from the reservoir through the pump and jets, keeping your windscreen clear of dirt, bugs, and debris for safe driving visibility in all conditions.

At Design911, we supply a comprehensive range of genuine and high-quality washer system components - including washer bottles (reservoirs), electric washer pumps, and precision spray jets — for all Porsche models such as the 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Every part is designed to offer high levels of fitment and performance for dependable cleaning power and long-term reliability.

What Do Washer Pumps, Bottles and Jets Do?

  • Washer Bottle / Reservoir: Stores the washer fluid and is typically located in the engine bay or boot area.
  • Washer Pump: An electric motor that pressurises the fluid and pushes it through the lines toward the 
  • Washer Jets / Nozzles: Deliver a fine, even spray of fluid onto the windscreen or headlights for effective cleaning coverage.

Together, these components ensure your windscreen remains clean and streak-free, maintaining visibility and safety in all weather conditions.

Why Do Washer Components Fail?
Over time, washer system parts can degrade or fail due to wear, contamination, or environmental exposure. Common causes include:

  • Pump failure due to internal corrosion or debris blocking the impeller.
  • Leaking washer bottles from cracks, freezing, or age-related wear.
  • Clogged jets caused by limescale, dirt, or poor-quality washer fluid.
  • Electrical issues such as damaged wiring or corroded connectors.
  • Perished hoses or seals leading to fluid leaks and reduced pressure.

Symptoms of failure include weak or no spray from the jets, fluid leaks, or a pump that doesn’t activate when the washer stalk is used.

Why Replace Faulty Washer Components?

A properly functioning washer system is essential for visibility and road safety. Replacing worn or damaged components ensures your windscreen remains clean and clear in all driving conditions.

Benefits of replacement include:

  • Restored washer performance and pressure.
  • Improved visibility and safety in rain or road spray.
  • Prevention of leaks and electrical damage.
  • High-quality parts for perfect fitment and durability.


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