Maintain a proper fuel seal and prevent leaks from the fuel pressure regulator with this Genuine Nissan Fuel Pressure Regulator O-Ring, designed for Nissan Patrol GQ and GU models fitted with TB42, TB45, and TB48 EFI engines. This OEM O-ring sits on the fuel rail at the pressure regulator and ensures a tight, leak-free seal to maintain correct fuel pressure and consistent engine performance.

Over time, the original O-ring can harden, crack, or shrink due to heat exposure and constant fuel contact. When this occurs, fuel leaks may develop at the regulator, leading to fuel smell in the engine bay, poor fuel pressure regulation, hard starting, or rough engine performance. Replacing it with a genuine Nissan component restores proper sealing, helps maintain correct fuel delivery, and prevents fuel system contamination or pressure loss.

Manufactured to Nissan factory specifications, this genuine O-ring provides fuel-resistant durability, precise fitment, and long-lasting reliability in demanding conditions. It is a direct replacement part requiring no modifications for installation.

Features & Benefits

• Genuine Nissan OEM part for precise fitment and reliable sealing performance
• Designed specifically for Nissan Patrol GQ & GU TB42, TB45, and TB48 EFI engines
• Seals the fuel pressure regulator on the fuel rail
• Prevents fuel leaks and maintains correct fuel pressure
• Fuel-resistant rubber construction for long service life
• Helps ensure consistent engine performance and fuel delivery
• Direct replacement with no modifications required

Vehicle Fitment

Suitable for:

• Nissan Patrol GQ Y60
• Nissan Patrol GU Y61

Please confirm compatibility before purchase or contact us with your VIN for assistance.

Common Signs of a Worn or Failing O-Ring

• Fuel smell in engine bay
• Visible fuel seepage around fuel pressure regulator
• Hard starting or long crank times
• Rough idle or inconsistent fuel pressure
• Increased fuel consumption or poor engine response

Replacing this small but critical sealing component helps prevent fuel leaks, maintain stable fuel pressure, and ensure long-term reliability of your Patrol’s EFI fuel system.