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Fuel Injector Inner Bush. Porsche 914-4 / 928 ❭ 311133261A
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 914 (1970-1976)
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Related, superseded, cross reference or alternative numbers for comparison.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 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Sold individually; x6 required per vehicle.
Fits:
Porsche 957 Cayenne Diesel 3.0L V6 2009-10
Porsche 958 Cayenne Diesel 3.0L V6 2011*
*NOTE: This seal ring is only compatible with first-year 958 Cayenne diesel models with the engine code 059E. From 2012 onward, the diesel model adopted a different engine, which uses a different part number seal. If you are unsure, please do not hesitate to contact us with your vehicle's VIN number, and we'll be happy to confirm compatibility.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95511051900
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
The OE Match Metal Sealing Ring for Fuel Injector Nozzle is a premium-quality replacement fuel system sealing component designed to provide a secure, leak-free seal between the fuel injector nozzle and the cylinder head on compatible Porsche engines. Manufactured to OE specifications for fit, sealing performance and durability, this precision-engineered metal sealing ring helps maintain correct fuel injector seating while preventing combustion gas leakage and ensuring optimum engine performance.
Sold Each.
x6 Required Per Engine.
Fits:
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Diagram Ref No 8
Manufactured from high-quality heat-resistant metal, the sealing ring is designed to withstand the extreme temperatures, pressures and combustion forces generated within the engine. Precision-manufactured for direct OE-style installation, it provides the correct crush characteristics to create an effective seal when the injector is installed, making it an essential replacement whenever the fuel injector is removed or replaced.
What This Product Does:
- Creates a gas-tight seal between the fuel injector nozzle and cylinder head.
- Prevents combustion gases from escaping around the injector.
- Ensures the fuel injector is correctly seated.
- Maintains optimum combustion efficiency.
- Protects the injector seating surface from combustion deposits.
- Supports smooth engine operation and fuel delivery.
- Restores factory sealing performance.
- Forms an essential part of the fuel injection system.
Symptoms Of Wear Or Failure:
- Combustion gas leakage around the fuel injector.
- Hissing or chuffing noise from the injector area.
- Carbon build-up around the injector base.
- Burning smell from the engine.
- Reduced engine performance.
- Rough idle or uneven engine running.
- Increased exhaust emissions.
- Difficulty removing seized injectors due to carbon deposits.
- Visible damage or deformation of the sealing ring during servicing.
- Engine management warning light if injector sealing affects combustion.
Why Replacement Matters:
- The metal sealing ring is exposed to extremely high combustion temperatures and cylinder pressures every time the engine operates. As a crush-type sealing washer, it deforms during installation to create an effective seal and should not be reused once removed.
- A worn, damaged or reused sealing ring can allow combustion gases to escape around the injector, leading to carbon deposits, reduced combustion efficiency and difficult future injector removal. Continued operation with a leaking injector seal may also affect engine performance, increase emissions and potentially damage the injector seating surface within the cylinder head.
- Replacing the sealing ring whenever the injector is removed ensures a reliable, gas-tight seal and helps maintain the efficiency and reliability of the fuel injection system. The OE Match Metal Sealing Ring is manufactured to OE standards, providing factory-style fitment, precise sealing characteristics and long-lasting durability for dependable Porsche engine performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95511051900
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
The Porsche Fuel Injector O-Ring, 2.8 x 1.5 is a genuine replacement sealing component designed to provide a secure, leak-free seal between the fuel injector and the fuel rail or engine assembly on compatible Porsche models. Manufactured to OE specifications for fit, sealing performance and durability, this precision-engineered O-ring helps maintain correct fuel system pressure while preventing fuel leaks and the ingress of dirt or air into the fuel system.
Sold Each.
x6 Required Per Engine.
Fits:
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
- Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
- Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
- Porsche 971.1 Panamera 4S Diesel V8 4.0L 4WD (422 Hp) 2017-18
- Porsche 971.1 Panamera 4S Diesel 4.0L Twin-Turbo V8 Sport Turismo 2017-18
- Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18
Diagram Ref No 9
Manufactured from high-quality fuel-resistant elastomer, the O-ring is engineered to withstand constant exposure to petrol, high fuel pressures, engine heat and repeated thermal cycling without hardening, cracking or losing elasticity. Precision-sized to the original Porsche dimensions, it provides direct OE-style fitment and reliable sealing performance during injector installation, servicing or engine repairs.
What This Product Does:
- Creates a leak-free seal around the fuel injector.
- Maintains correct fuel system pressure.
- Prevents fuel leaks between the injector and its mounting point.
- Helps prevent air entering the fuel system.
- Protects surrounding engine components from fuel contamination.
- Supports efficient fuel delivery and engine performance.
- Restores factory sealing performance.
- Forms an essential part of the fuel injection system.
Symptoms Of Wear Or Failure:
- Fuel smell from the engine bay.
- Visible fuel leaks around the injector.
- Difficult engine starting.
- Rough idle or engine misfires.
- Reduced engine performance.
- Increased fuel consumption.
- Loss of fuel pressure.
- Cracked, flattened or hardened O-ring.
- Fuel system fault codes.
- Increased fire risk due to fuel leakage.
Why Replacement Matters:
- The fuel injector O-ring is continually exposed to fuel, high operating temperatures and pressure fluctuations. Over time, the sealing material can harden, shrink, crack or become compressed, reducing its ability to maintain an effective seal around the injector.
- A worn or damaged O-ring can allow fuel to leak from the injector, reducing fuel system pressure and affecting engine performance. Fuel leaks within the engine bay also present a significant safety hazard and may damage surrounding components if left unresolved.
- Replacing the O-ring whenever a fuel injector is removed or serviced helps ensure a secure, leak-free fuel system. The genuine Fuel Injector O-Ring is manufactured to OE standards using premium fuel-resistant materials, providing factory-style fitment, dependable sealing performance and long-lasting durability, helping maintain the safety, efficiency and reliability expected from your Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95800748010
The product you are viewing cross references to these numbers
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