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Injectors
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 914 (1970-1976)
Shop Securely
12 Month Warranty
Worldwide Delivery
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
The product you are viewing cross references to these numbers
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 914 (1970-1976)
Shop Securely
12 Month Warranty
Worldwide Delivery
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
The product you are viewing cross references to these numbers
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 914 (1970-1976)
Shop Securely
12 Month Warranty
Worldwide Delivery
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
The product you are viewing cross references to these numbers
- Porsche 928S 4.7L 1981-83
Shop Securely
12 Month Warranty
Worldwide Delivery
Fuel Injectors – Precision Fuel Delivery for Porsche Performance
Fuel injectors are critical components in your Porsche’s engine management system, responsible for delivering precise amounts of fuel directly into the combustion chamber. They ensure efficient fuel atomisation and optimal air-fuel ratios, which are essential for smooth performance, responsive acceleration, and reduced emissions.
At Design911, we offer a comprehensive selection of genuine and high-quality fuel injectors for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each injector is engineered for accuracy, flow consistency, and reliability — ensuring your Porsche maintains its renowned performance and efficiency.
What Do
Fuel Injectors Do?
Fuel injectors deliver pressurised fuel into
the engine at precise intervals, ensuring perfect combustion. Their primary
functions include:
A properly functioning injector ensures smooth idle, crisp acceleration, and optimal power output — critical for both daily driving and high-performance applications.
Why Do Fuel Injectors Fail?
Fuel injectors operate under high pressure and
extreme heat, making them prone to gradual wear or contamination. Common causes
of failure include:
- Fuel contamination from debris or poor-quality petrol.
- Clogged or restricted nozzles due to carbon buildup.
- Leaking seals or o-rings causing pressure loss.
- Electrical faults in injector coils or connectors.
- Corrosion from ethanol-blended fuels or moisture.
Symptoms of faulty injectors include rough idle, engine misfires, increased fuel consumption, loss of power, or a check engine light.
Why Replace Faulty Fuel Injectors?
Replacing worn or damaged fuel injectors restores your Porsche’s engine efficiency and responsiveness. New injectors ensure precise fuel delivery and balanced performance across all cylinders.
Benefits of replacement include:
- Restored engine smoothness and performance.
- Improved throttle response and power delivery.
- Reduced emissions and better fuel economy.
- Reliable combustion with manufacturer-quality precision.
Our range of injectors is designed using high-precision engineering and corrosion-resistant materials, ensuring consistent spray patterns, flow rates, and long service life in all conditions.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed