Apex AMS5502 Fuel Injection Plenum Gasket Set - Upper

Apex AMS5502 Fuel Injection Plenum Gasket Set

The Apex AMS5502 fuel injection plenum gasket set is a direct-fit sealing solution for upper intake service on select Nissan and INFINITI applications. It is built for 2001-2004 Nissan Pathfinder and 2001-2003 INFINITI QX4 upper plenum service, where a stable seal is critical for intake performance.

Key Features

• Fuel injection plenum gasket set for upper intake sealing
• Fits 2001-2004 Nissan Pathfinder, upper
• Fits 2001-2003 INFINITI QX4, upper
• Applies to the Apex AMS5502 part number for easy catalog matching
• Supports service work on the intake plenum sealing surface

Product Details

The Apex AMS5502 is an air and fuel delivery sealing component made for upper plenum applications on the Nissan Pathfinder and INFINITI QX4. When the intake plenum seal is worn, damaged, or no longer sealing evenly, this gasket set provides the replacement needed to restore the joint between intake components. Search terms such as 2001-2004 Nissan Pathfinder upper plenum gasket set and 2001-2003 INFINITI QX4 fuel injection plenum gasket set both point to this application.

Use the Apex AMS5502 when servicing the upper intake on these vehicles and when the original sealing surface no longer maintains proper contact. The part number AMS5502 is also helpful when cross-checking catalog listings for the correct intake sealing application.

What It Helps Address

• Intake air leaks at the upper plenum sealing surface
• Vacuum leaks caused by a deteriorated plenum gasket
• Rough idle related to intake sealing loss
• Driveability issues tied to unmetered air entering the intake
• Service replacement for worn upper intake gaskets

Installation Notes and Tips

Clean the mating surfaces thoroughly before installation and inspect the intake components for warpage, corrosion, or residue that could affect sealing. Confirm the vehicle application by year, make, model, and upper position before ordering. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Apex identifies this part as AMS5502 for accurate application matching and catalog lookup. Verify fitment against the vehicle’s upper intake configuration before installation.