Details

• Brand:

  

• SKU:

  8N0-201-375-A

• Positions: Left
• Other Names:

  Retainer Ring, Fuel Gauge Lock Nut, Union Nut, Reservoir Retainer Ring, Fuel Tank Retainer Ring, Nut

• Description:

  Genuine Audi Union Nut is a genuine OEM fastener designed specifically for the Audi TT fuel system, fitting models up to VIN 8N3016000 across all drivetrain configurations including 2WD, FWD, AWD, and Quattro variants. This component functions as the Fuel Tank Retainer Ring that secures the fuel gauge sending unit and fuel pump module firmly against the top of the fuel tank, creating a precise, leak-free seal that maintains consistent fuel system pressure. When it comes to a part like this Audi TT OEM Union Nut, aftermarket alternatives frequently fail to match the exact thread pitch, torque specifications, and sealing geometry engineered into the original design. An improperly fitting Reservoir Retainer Ring or Fuel Gauge Lock Nut can result in fuel odors, sending unit misreads, and potentially dangerous fuel leaks — risks no aftermarket cost savings can justify. The genuine 8N0201375A is manufactured to Audi's exact tolerances, ensuring the fuel module seats correctly and the sealing ring compresses evenly every time. Whether you know this part as a Retainer Ring, Fuel Tank Retainer Ring, or simply by its OEM part number, sourcing it genuine makes all the difference in long-term reliability. Audi Henderson is an authorized Audi dealer, and every genuine OEM part purchased includes the full manufacturer warranty for your peace of mind.

• Notes: Included with fuel tank.

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