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Product Information
Product Information
Metal Sealing Ring For Fuel Injector Nozzle.
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.



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