Delphi FA10037 Fuel Tank Lock Ring

Fuel Tank Lock Ring for Nissan and INFINITI

The Delphi FA10037 fuel tank lock ring is a standard replacement part for securing the fuel pump module to the tank. Built from steel with a black finish, it includes the tank seal for a proper service repair on a wide range of Nissan and INFINITI applications.

Compatible with many Nissan 350Z, Sentra, Frontier, Pathfinder, Xterra, Maxima, and INFINITI models, this lock ring supports fuel system service where a secure tank seal is critical. Delphi’s OE heritage and decades of supplier experience are reflected in the fit and material selection of this replacement part.

Key Features

• Delphi FA10037 fuel tank lock ring for fuel pump module service
• Steel construction with black finish for standard replacement use
• Includes tank seal for sealing at the fuel tank opening
• Inside diameter: 4.48 in.; outside diameter: 6.29 in.; thickness: 0.15 in.
• Rim width: 0.91 in. for proper seating during installation
• Direct replacement style for select Nissan and INFINITI fuel tank applications

Detailed Description

The Delphi FA10037 is a fuel tank lock ring engineered for service on select Nissan and INFINITI vehicles. It is made from steel and finished in black, with a standard replacement grade intended to restore secure retention of the fuel pump module at the tank opening. The included tank seal helps complete the sealing interface during fuel system repair. Delphi draws on OE experience and knowledge developed through long-term supplier relationships with major automakers, bringing that background into aftermarket service parts like this lock ring.

This part cross-references Spectra Premium LO165 for the same application. It is also associated with part numbers 579019, 1734140U00, and BFA10037.

Common Repair Uses

• Replacing a damaged or corroded fuel tank lock ring
• Restoring a secure seal after fuel pump module service
• Addressing fuel odor caused by a worn tank seal
• Correcting fitment issues from a distorted or reused lock ring
• Supporting fuel tank maintenance on Nissan and INFINITI models

Installation Notes and Tips

• Clean the fuel tank before installing the fuel pump to prevent future seal problems.
• Verify the lock ring dimensions against the original part before installation.
• Inspect the tank opening and sealing surface for damage, rust, or debris.
• Use proper fuel system service procedures when removing and securing the module.

Quality Assurance

Delphi builds this replacement part using OE-focused engineering knowledge and a broad aftermarket portfolio for multiple vehicle years and applications. The FA10037 is a practical choice for fuel tank service where correct sealing and secure module retention matter.

Compatible With 1991-2020 Nissan and INFINITI applications including 2003-2009 Nissan 350Z, 1995-2003 Nissan Maxima, 1999-2004 Nissan Frontier, 1996-2004 Nissan Pathfinder, 2000-2004 Nissan Xterra, 2008-2013 INFINITI G37, and 2014-2020 INFINITI Q50.