Fuel Pump Seal NI0515878 Fit Nissan Altima 2004-2018 Fit Quest 2004-2009

Fuel Pump Seal for Nissan

This replacement fuel pump seal, cross-referencing part number NI0515878, forms a tight, gasoline-resistant seal around the fuel pump assembly to prevent vapors and fuel leaks.

Overview

This fuel pump seal prevents fuel leaks and pressure loss where the fuel tank meets the fuel pump sending unit. Molded from premium elastomer compounds, this fuel pump seal resists degradation from modern fuel additives and ethanol. It is an essential replacement part for technicians and vehicle owners servicing the fuel system or replacing a fuel pump.

Built For Performance

• High-grade elastomeric compound resists swelling and breakdown from fuel exposure.
• Engineered to maintain flexibility and sealing performance in extreme hot or cold temperatures.
• Precise cross-sectional dimensions ensure a tight, leak-free compression fit.
• Direct fit equivalent to part number NI0515878.

Fits These Machines

• for Nissan Altima (2004-2018)
• for Nissan Quest (2004-2009)

On-The-Job Use

• Replacing a worn or stretched seal during a fuel pump swap.
• Resolving fuel odor issues near the rear passenger cabin.
• Sealing the fuel tank to clear Evaporative Emission Control System (EVAP) leak codes.

Specs At A Glance

Good To Know

Q: Can the old fuel pump seal be reused? A: It is not recommended, as used seals often stretch out or degrade, which can cause difficult sealing issues and EVAP leaks upon reassembly.

Q: What is the best way to ensure a leak-free installation? A: Clean the sealing surface on the fuel tank thoroughly and ensure the seal sits flat in its groove before tightening the lock ring.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.