Washer pumps / bottles / jets

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Related, superseded, cross reference or alternative numbers for comparison.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

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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.

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Related, superseded, cross reference or alternative numbers for comparison.

477955481

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Check Valve for Windshield Washer Pump.


Fits:
Porsche 911 1974-80
Porsche 911 (930) Turbo 1975-77

Click 'Zoom in' for large parts diagram.
Diagram ref no 29

Related reference numbers
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91162899900

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Headlamp Washer Jet Hose Clamp 
Sold each - 2 required per car

High-quality hose clamp designed for securing the headlamp washer jet hose on Porsche 911 models from 1974 to 1979.

This clamp ensures a tight and reliable connection within the washer system, preventing leaks and maintaining consistent fluid delivery to the headlamp washer jets. It plays an important role in preserving correct washer function and overall system efficiency.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1975-1977 3.0L Turbo (930)

Diagram ref no 59  

Manufactured to OEM-style specifications, this clamp provides durability, corrosion resistance, and precise fitment, making it ideal for maintenance, repair, or restoration of classic Porsche 911 washer systems.

Key Features

• Designed for headlamp washer hose applications
• Suitable for Porsche 911 (1974–1979)
• Ensures secure hose connections
• Prevents washer fluid leaks
• Durable and corrosion-resistant construction
• OEM-style fit and appearance
• Ideal for restoration and maintenance

Function and Purpose

This clamp is a small but essential component of the washer system.

It helps to:
• Secure the washer hose to the jet or connector
• Maintain consistent washer fluid flow
• Prevent hose disconnection under pressure
• Ensure reliable headlamp cleaning function
• Support overall system integrity

Why Replace Hose Clamps

Over time, clamps can weaken or corrode.

Common issues include:
• Loss of clamping force
• Corrosion and rust
• Hose slippage or leaks
• Reduced washer system efficiency

Replacing worn clamps ensures secure connections and reliable washer performance.

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

PCG51105202

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Headlamp Washer Jet Hose Clamp 
Sold each - 2 required per car

High-quality hose clamp designed for securing the headlamp washer jet hose on Porsche 911 models from 1974 to 1979.

This clamp ensures a tight and reliable connection within the washer system, preventing leaks and maintaining consistent fluid delivery to the headlamp washer jets. It plays an important role in preserving correct washer function and overall system efficiency.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1975-1977 3.0L Turbo (930)

Diagram ref no 59  

Manufactured to OEM-style specifications, this clamp provides durability, corrosion resistance, and precise fitment, making it ideal for maintenance, repair, or restoration of classic Porsche 911 washer systems.

Key Features

• Designed for headlamp washer hose applications
• Suitable for Porsche 911 (1974–1979)
• Ensures secure hose connections
• Prevents washer fluid leaks
• Durable and corrosion-resistant construction
• OEM-style fit and appearance
• Ideal for restoration and maintenance

Function and Purpose

This clamp is a small but essential component of the washer system.

It helps to:
• Secure the washer hose to the jet or connector
• Maintain consistent washer fluid flow
• Prevent hose disconnection under pressure
• Ensure reliable headlamp cleaning function
• Support overall system integrity

Why Replace Hose Clamps

Over time, clamps can weaken or corrode.

Common issues include:
• Loss of clamping force
• Corrosion and rust
• Hose slippage or leaks
• Reduced washer system efficiency

Replacing worn clamps ensures secure connections and reliable washer performance.

Related reference numbers
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PCG51105202

The product you are viewing cross references to these numbers

clamp hose spring 8.5-10.5mm. 

Fits:
Porsche 911 - 1984 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche - 996 - 1997 to 2005
Porsche 997.1 turbo / GT2 - 
Porsche 986 Boxster - 1997 to 2004
Porsche 987.1 Boxster / Cayman - 2005 to 2008

Click 'Zoom in' for large parts diagram.
Diagram Ref No 20

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99951252700

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Distributor Piece for Water Reservoir Bottle.



Fits:
Porsche 911 1974-89
Porsche 930 Turbo 1974-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 32

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91162873702

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Fabric hose for wiper system, 3 m



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

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PCG02030110

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Felt strip for windscreen washer bottle.



Fits:
Porsche 911 1965-67

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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90162879221

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Funnel hose insert for water reservoir bag

Fits:
Porsche 911 / 912 - 1964 to 1966

Up to chassis numbers

030 2694
035 1292
045 1373

Diagram ref no 2

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90162872520

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Headlamp washer hose 10x16mm
Sold in 1m lengths



Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 924 - 1976 to 1978
Porsche 944 - turbo 1985 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995

Click 'Zoom in' for large parts diagram.
Diagram ref no 4 and 5

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99918180640

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Headlamp Washer Hose 10x16 – Sold Per Metre

High-quality headlamp washer hose designed for a wide range of Porsche models including 911, 964, 924, 944, 968, and 928.

With a 10mm internal diameter and 16mm outer diameter, this hose is ideal for use within the headlamp washer system, ensuring reliable delivery of washer fluid to the headlight cleaning nozzles.

Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 924 - 1976 to 1978
Porsche 944 - turbo 1985 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995

Diagram ref no 4 and 5

Supplied per metre, this flexible hose allows you to cut to the exact length required—perfect for repairs, restorations, or custom routing within the washer system.

Manufactured for durability and resistance to washer fluid, temperature changes, and ageing, this hose is suitable for long-term use in demanding automotive environments.

Key Features

• Headlamp washer hose (10mm ID / 16mm OD)
• Suitable for multiple Porsche models
• Sold per metre for flexible installation
• Ideal for headlight washer systems
• Resistant to washer fluid and environmental exposure
• Durable and flexible construction

Function and Purpose

This hose is a key part of the washer system.

It helps to:

• Deliver washer fluid to headlamp cleaning nozzles
• Maintain proper operation of the headlight washer system
• Ensure clear visibility in adverse conditions
• Replace ageing or damaged washer hoses

Why Replace Washer Hoses

Over time, washer hoses can degrade due to age and exposure.

Common issues include:

• Cracking or hardening
• Fluid leaks
• Blockages or restricted flow
• Disconnection or poor fitment

Replacing the hose restores proper washer system functionality.

Related reference numbers
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99918180640

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Headlamp washer jet gasket.



Fits:
Porsche 911 SC / 2.7L 1974-79
Porsche 911 TURBO 1975-77

Click 'Zoom in' for large parts diagram.
Diagram ref no 56 (LEFT) and 57 (RIGHT).

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