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Fuel Injectors

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DISPLAYING 1 to 14 (of 14 products)
94461212802/1KIT2
Product Information
Product Information

Fuel Injector Connector Protective Rubber Boot
Kit contains 4 boots

High-quality protective rubber boot designed for the fuel injector connector on Porsche 924S and 944 models, providing essential protection for the electrical connection.

This rubber boot fits over the injector connector, shielding it from heat, moisture, dirt, and engine bay contaminants, helping to maintain reliable electrical contact and prevent premature wear or failure.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944 Turbo 2.5L 8V 1985-88
Diagram ref no 2  

Sold individually, this component is ideal for replacing cracked, hardened, or missing boots during maintenance or restoration of the fuel injection system.

Key Features

• Protective rubber boot for fuel injector connector
• Suitable for Porsche 924S, 944 
• Shields electrical connections from contaminants
• Helps maintain reliable injector operation
• Flexible, heat-resistant rubber construction
• OEM-style fit and appearance
• Ideal for restoration and repair work
• Sold individually

Function and Purpose

This rubber boot plays a key role in protecting injector wiring.

It helps to:
• Protect electrical connections from dirt and moisture
• Reduce risk of corrosion and electrical faults
• Maintain consistent injector signal reliability
• Extend lifespan of wiring connectors
• Support overall engine performance

Why Replace Injector Connector Boots

Over time, rubber components deteriorate due to heat and exposure.

Common issues include:
• Cracked or brittle rubber
• Missing or damaged boots
• Exposure of connectors to contaminants
• Increased risk of electrical faults

Replacing worn boots helps ensure reliable fuel injection system performance.



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Related, superseded, cross reference or alternative numbers for comparison.

94461212802
94461212802
94461212800

The product you are viewing cross references to these numbers
94461212802/1KIT1
Product Information
Product Information

Fuel Injector Connector Protective Rubber Boot Kit
Kit contains 8 caps

High-quality protective rubber boot kit designed for the fuel injector connectors on Porsche 928 models, providing essential protection for the electrical connection.

This rubber boot fits over the injector connector, shielding it from heat, moisture, dirt, and engine bay contaminants, helping to maintain reliable electrical contact and prevent premature wear or failure.

Fits:

  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram ref no 2  

Sold individually, this component is ideal for replacing cracked, hardened, or missing boots during maintenance or restoration of the fuel injection system.

Key Features

• Protective rubber boot for fuel injector connector
• Suitable for Porsche 928
• Shields electrical connections from contaminants
• Helps maintain reliable injector operation
• Flexible, heat-resistant rubber construction
• OEM-style fit and appearance
• Ideal for restoration and repair work
• Sold individually

Function and Purpose

This rubber boot plays a key role in protecting injector wiring.

It helps to:
• Protect electrical connections from dirt and moisture
• Reduce risk of corrosion and electrical faults
• Maintain consistent injector signal reliability
• Extend lifespan of wiring connectors
• Support overall engine performance

Why Replace Injector Connector Boots

Over time, rubber components deteriorate due to heat and exposure.

Common issues include:
• Cracked or brittle rubber
• Missing or damaged boots
• Exposure of connectors to contaminants
• Increased risk of electrical faults

Replacing worn boots helps ensure reliable fuel injection system performance.



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

94461212802
94461212802
94461212800

The product you are viewing cross references to these numbers
Special Order item
311133261A
Product Information
Product Information

Fuel Injector Locating Bush Inner – Injector Mounting O-Ring & Vibration Damper
Sold each

High-quality fuel injector locating bush designed for Porsche 928S models with engines M28.19, M28.20, M28.21, and M28.22, and also used in various other applications including select Mercedes models.

Fits:

  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 914-4 (1970-1976)

Diagram ref no 27

This component is mounted over the fuel injector and functions as both a locating bearing and vibration-damping O-ring. It ensures the injector is correctly positioned while reducing movement and absorbing vibration within the fuel system.

Manufactured from durable rubber material, this locating bush is engineered to withstand fuel system conditions, heat, and long-term use while maintaining flexibility and sealing performance.

A direct replacement part, this injector locating inner bush is essential for maintaining proper injector alignment, reducing vibration, and ensuring reliable fuel delivery.

Key Features

• Direct replacement fuel injector inner locating bush / O-ring
• Suitable for Porsche 928S (M28.19 / M28.20 / M28.21 / M28.22)
• Also used in various compatible vehicle applications (including Mercedes)
• Provides injector positioning and vibration damping
• Durable rubber construction for long-term performance
• OEM-style fit and function

Function and Purpose

This locating bush acts as both a positioning guide and vibration damper for the fuel injector.

It helps to:

• Secure the injector in its correct position
• Absorb vibration within the fuel system
• Improve sealing and stability
• Support consistent fuel delivery and injector performance

Why Replace Your Injector Locating Bush

Over time, rubber sealing and damping components can degrade.

Common issues include:

• Hardened or cracked rubber
• Loss of elasticity and damping ability
• Poor injector seating or movement
• Fuel system vibration or instability

Replacing the locating bush restores proper injector fitment and improves overall system performance.



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

311133261A
311133261A

The product you are viewing cross references to these numbers
311133261A/1
Product Information
Product Information

Fuel Injector Locating Bush Inner – Injector Mounting O-Ring & Vibration Damper
Sold each

High-quality fuel injector locating bush designed for Porsche 928S models with engines M28.19, M28.20, M28.21, and M28.22, and also used in various other applications including select Mercedes models.

Fits:

  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 914-4 (1970-1976)

Diagram ref no 27

This component is mounted over the fuel injector and functions as both a locating bearing and vibration-damping O-ring. It ensures the injector is correctly positioned while reducing movement and absorbing vibration within the fuel system.

Manufactured from durable rubber material, this locating bush is engineered to withstand fuel system conditions, heat, and long-term use while maintaining flexibility and sealing performance.

A direct replacement part, this injector locating inner bush is essential for maintaining proper injector alignment, reducing vibration, and ensuring reliable fuel delivery.

Key Features

• Direct replacement fuel injector inner locating bush / O-ring
• Suitable for Porsche 928S (M28.19 / M28.20 / M28.21 / M28.22)
• Also used in various compatible vehicle applications (including Mercedes)
• Provides injector positioning and vibration damping
• Durable rubber construction for long-term performance
• OEM-style fit and function

Function and Purpose

This locating bush acts as both a positioning guide and vibration damper for the fuel injector.

It helps to:

• Secure the injector in its correct position
• Absorb vibration within the fuel system
• Improve sealing and stability
• Support consistent fuel delivery and injector performance

Why Replace Your Injector Locating Bush

Over time, rubber sealing and damping components can degrade.

Common issues include:

• Hardened or cracked rubber
• Loss of elasticity and damping ability
• Poor injector seating or movement
• Fuel system vibration or instability

Replacing the locating bush restores proper injector fitment and improves overall system performance.



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

311133261A
311133261A

The product you are viewing cross references to these numbers
Special Order item
311133263
Product Information
Product Information
Fuel injector outer bush.

Fits:
Porsche 914-4 1.7
Porsche 914 1.8/2.0
Porsche 928 1980-84

Diagram ref no 23

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

311133263
311133263
022906031A

The product you are viewing cross references to these numbers
311133263/1
Product Information
Product Information

Fuel Injector Locating Bush – Injector Mounting O-Ring & Vibration Damper
Sold each

High-quality fuel injector locating bush designed for Porsche 928S models with engines M28.19, M28.20, M28.21, and M28.22, and also used in various other applications including select Mercedes models.

Fits:

  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 914-4 (1970-1976)

Diagram ref no 25

This component is mounted over the fuel injector and functions as both a locating bearing and vibration-damping O-ring. It ensures the injector is correctly positioned while reducing movement and absorbing vibration within the fuel system.

Manufactured from durable rubber material, this locating bush is engineered to withstand fuel system conditions, heat, and long-term use while maintaining flexibility and sealing performance.

A direct replacement part, this injector locating bush is essential for maintaining proper injector alignment, reducing vibration, and ensuring reliable fuel delivery.

Key Features

• Direct replacement fuel injector locating bush / O-ring
• Suitable for Porsche 928S (M28.19 / M28.20 / M28.21 / M28.22)
• Also used in various compatible vehicle applications (including Mercedes)
• Provides injector positioning and vibration damping
• Durable rubber construction for long-term performance
• OEM-style fit and function

Function and Purpose

This locating bush acts as both a positioning guide and vibration damper for the fuel injector.

It helps to:

• Secure the injector in its correct position
• Absorb vibration within the fuel system
• Improve sealing and stability
• Support consistent fuel delivery and injector performance

Why Replace Your Injector Locating Bush

Over time, rubber sealing and damping components can degrade.

Common issues include:

• Hardened or cracked rubber
• Loss of elasticity and damping ability
• Poor injector seating or movement
• Fuel system vibration or instability

Replacing the locating bush restores proper injector fitment and improves overall system performance.



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

311133263
311133263
022906031A

The product you are viewing cross references to these numbers
92811039800/1
Product Information
Product Information
Fuel injector seal.
Sleeve for injector, fitted at the point where the injector seats in the cylinder head. Designed specifically for the Porsche 928 (1978-83 / 928 / 928S) engines. Seamless compatibility reduces risk of improper sealing or damage.

Fits:
Porsche 928 / 928S 1978 - 1983

Diagram ref no 35

Function:
•  It seals the fuel injector where it sits in the cylinder head of the engine.
  Prevents fuel leaks and keeps air from entering around the injector.
  Ensures the injector delivers the correct fuel spray and pressure into the combustion chamber.

Why It Matters:
  If the sleeve/seal wears out, you can get fuel odors, leaks, or misfires.
  A bad seal lets air escape or enter, messing up the engine’s fuel-air mixture and causing rough idle or performance loss.
  It also prevents heat and vibration damage to the injector itself, extending its life.

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

92811039800
92811039800

The product you are viewing cross references to these numbers
Special Order item
92811039800
Product Information
Product Information
Fuel injector seal.
porsche

Fits:
Porsche 928 / 928S 1978-83

Click 'Zoom in' for large parts diagram.
Diagram ref no 35

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

92811039800
92811039800

The product you are viewing cross references to these numbers
92811035100/1
Product Information
Product Information

Fuel Injector Hose Sleeve – Protective Fuel Line Cover (M28 Engines)

High-quality fuel injector hose sleeve designed for Porsche 928S models with M28.19, M28.20, M28.21, and M28.22 engines, and also suitable for various other compatible vehicle applications.

Fits:

  • Porsche 928S 4.7L 1981-83    

Diagram ref no 21

This component acts as a protective outer sleeve for the fuel injector hose, helping to shield fuel lines from heat, abrasion, and environmental exposure within the engine bay. It plays an important role in maintaining the integrity and longevity of the fuel system.

Manufactured from durable, heat-resistant material, this hose sleeve is engineered to withstand demanding conditions while providing consistent protection and flexibility.

A direct replacement part, this injector hose sleeve is essential for preserving fuel line condition and ensuring long-term system reliability.

Key Features

• Direct replacement fuel injector hose sleeve
• Suitable for Porsche 928S (M28.19 / M28.20 / M28.21 / M28.22)
• Also compatible with various other vehicle applications
• Protects fuel injector hoses from heat and abrasion
• Durable, heat-resistant construction
• OEM-style fit and function

Function and Purpose

This hose sleeve provides protective coverage for fuel injector hoses.

It helps to:

• Shield fuel lines from engine bay heat
• Prevent wear from friction and movement
• Extend the lifespan of injector hoses
• Maintain safe and reliable fuel system operation

Why Replace Your Injector Hose Sleeves

Over time, protective sleeves can degrade due to heat and environmental exposure.

Common issues include:

• Cracked or brittle material
• Loss of protective effectiveness
• Increased exposure of fuel hoses to heat and wear
• Premature degradation of fuel lines

Replacing worn sleeves helps protect fuel hoses and maintain system integrity.



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

92811035100
92811035100

The product you are viewing cross references to these numbers
Special Order item
92811022500
Product Information
Product Information
Fuel injector. Sold each.

porsche

Fits:
Porsche 928 / 928S 1978-83

Click 'Zoom in' for large parts diagram.
Diagram ref no 36

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

92811022500
92811022500

The product you are viewing cross references to these numbers
Special Order item
91111026400
Product Information
Product Information
Intermediate piece cold start injector. 


porsche

Fits:
Porsche 911 - 1974 to 1983 (K-Jetronic injection)
Porsche 928 / 928 S - 1978 to 1983 (K-Jetronic injection)

Click 'Zoom in' for large parts diagram.
Diagram ref no 16




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

91111026400
91111026400

The product you are viewing cross references to these numbers
5109
Product Information
Product Information
Plug repair kit for fuel injectors including grommet.
Reference numbers: 357972741A, 37906240.

nordschleife

Fits:
Porsche 924 S
Porsche 944
Porsche 968
Porsche 928


Description:
This repair kit is used to overhaul the plugs for the injectors. As a rule, the clips break off at the plugs after the years and the rubber grommet is cracked by its kinked position on the valve. As a result, moisture penetrates to the plug contacts and cause them to corrode. If you do not want to procure a completely new engine wiring harness right away, you can use this repair kit to replace the plug-in contacts in the original way.

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

5109
5109
357972741A
37906240

The product you are viewing cross references to these numbers
Special Order item
94461212802
Product Information
Product Information

Fuel Injector Connector Protective Rubber Boot
Sold each

High-quality protective rubber boot designed for the fuel injector connector on Porsche 924S, 944, and 928 models, providing essential protection for the electrical connection.

This rubber boot fits over the injector connector, shielding it from heat, moisture, dirt, and engine bay contaminants, helping to maintain reliable electrical contact and prevent premature wear or failure.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram ref no 2  

Sold individually, this component is ideal for replacing cracked, hardened, or missing boots during maintenance or restoration of the fuel injection system.

Key Features

• Protective rubber boot for fuel injector connector
• Suitable for Porsche 924S, 944, and 928
• Shields electrical connections from contaminants
• Helps maintain reliable injector operation
• Flexible, heat-resistant rubber construction
• OEM-style fit and appearance
• Ideal for restoration and repair work
• Sold individually

Function and Purpose

This rubber boot plays a key role in protecting injector wiring.

It helps to:
• Protect electrical connections from dirt and moisture
• Reduce risk of corrosion and electrical faults
• Maintain consistent injector signal reliability
• Extend lifespan of wiring connectors
• Support overall engine performance

Why Replace Injector Connector Boots

Over time, rubber components deteriorate due to heat and exposure.

Common issues include:
• Cracked or brittle rubber
• Missing or damaged boots
• Exposure of connectors to contaminants
• Increased risk of electrical faults

Replacing worn boots helps ensure reliable fuel injection system performance.



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

94461212802
94461212802
94461212800

The product you are viewing cross references to these numbers
94461212802/1
Product Information
Product Information

Fuel Injector Connector Protective Rubber Boot
Sold each

High-quality protective rubber boot designed for the fuel injector connector on Porsche 924S, 944, and 928 models, providing essential protection for the electrical connection.

This rubber boot fits over the injector connector, shielding it from heat, moisture, dirt, and engine bay contaminants, helping to maintain reliable electrical contact and prevent premature wear or failure.

Fits:

  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram ref no 2  

Sold individually, this component is ideal for replacing cracked, hardened, or missing boots during maintenance or restoration of the fuel injection system.

Key Features

• Protective rubber boot for fuel injector connector
• Suitable for Porsche 924S, 944, and 928
• Shields electrical connections from contaminants
• Helps maintain reliable injector operation
• Flexible, heat-resistant rubber construction
• OEM-style fit and appearance
• Ideal for restoration and repair work
• Sold individually

Function and Purpose

This rubber boot plays a key role in protecting injector wiring.

It helps to:
• Protect electrical connections from dirt and moisture
• Reduce risk of corrosion and electrical faults
• Maintain consistent injector signal reliability
• Extend lifespan of wiring connectors
• Support overall engine performance

Why Replace Injector Connector Boots

Over time, rubber components deteriorate due to heat and exposure.

Common issues include:
• Cracked or brittle rubber
• Missing or damaged boots
• Exposure of connectors to contaminants
• Increased risk of electrical faults

Replacing worn boots helps ensure reliable fuel injection system performance.



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

94461212802
94461212802
94461212800

The product you are viewing cross references to these numbers
DISPLAYING 1 to 14 (of 14 products)
About Fuel Injectors

Fuel Injectors – Precision Fuel Delivery for Porsche Performance and Efficiency

Fuel injectors are a crucial component in your Porsche’s engine management system, ensuring the precise amount of fuel is delivered to each cylinder for clean, efficient combustion. A properly functioning injector optimises power output, throttle response, and fuel economy — maintaining the performance standards Porsche is known for.

At Design911, we offer a comprehensive range of  fuel injectors designed for Porsche models old and new — from air-cooled classics to the latest turbocharged engines. Built to manufacturer-quality standards using advanced materials and precision nozzles, our injectors ensure accurate fuel atomisation, consistent spray patterns, and long-term durability under extreme temperatures and pressures.

Whether you’re restoring a 911, maintaining a Cayman, or upgrading for performance driving, our injectors are engineered to deliver clean, efficient combustion and consistent engine response.

What Do Fuel Injectors Do?

Fuel injectors are electronically controlled valves that deliver precise amounts of pressurised fuel into the combustion chamber or intake manifold.

Core Functions:

  • Atomise and inject fuel for efficient combustion.
  • Ensure consistent air-fuel ratio across all cylinders.
  • Improve engine responsiveness, power, and economy.
  • Support emissions control by maintaining clean, complete fuel burn.

Every Porsche engine relies on its injectors for accurate fuel delivery — a vital factor in maintaining both performance and efficiency.

Why Do Fuel Injectors Fail?

Fuel injectors are exposed to heat, pressure, and fuel impurities, making them prone to gradual wear or clogging over time.

Common Causes of Failure Include:

  • Fuel contamination, leading to clogging or restricted flow.
  • Carbon build-up on the nozzle tips, disrupting spray pattern.
  • Electrical or coil failure, affecting signal timing.
  • Internal leaks due to seal deterioration or corrosion.
  • Ethanol degradation, which can damage internal components.

Symptoms of injector failure include rough idling, poor acceleration, increased fuel consumption, misfires, or difficulty starting — all signs of inconsistent fuel delivery.

Why Replace with Precision-Engineered Fuel Injectors?

Replacing worn or clogged injectors restores proper fuel delivery, maximising power, smoothness, and efficiency. Our
performance-grade, direct-fit injectors are designed to provide consistent fuel flow, superior atomisation, and long service life.

Key Benefits:

  • Restores power and throttle response.
  • Improves fuel economy and engine smoothness.
  • Prevents misfires, stalling, and hard starts.
  • Reduces emissions through cleaner combustion.
  • Crafted from high-quality, corrosion-resistant materials.
  • Direct-fit design for easy installation and long-term reliability.

Perfect for preventative maintenance or performance upgrades, these injectors deliver manufacturer-level precision and durability for every Porsche engine.

Highlights:

  • High-quality replacement fuel injectors for Porsche models.
  • Precision-engineered nozzles for accurate atomisation.
  • Tested for pressure stability and spray accuracy.
  • Improves power, efficiency, and emissions performance.
  • Compatible with classic and modern Porsche engines.
  • Essential for restorations, rebuilds, and tuning projects.

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