Apex AMS5176 Fuel Injection Plenum Gasket Set - Upper

Fuel Injection Plenum Gasket Set for Nissan and Infiniti

The Apex AMS5176 fuel injection plenum gasket set is a direct-fit sealing solution for upper intake service on select Nissan, Infiniti, and Mercury applications. It is used when servicing the upper plenum on vehicles such as the Nissan Pathfinder, Nissan Quest, and Nissan Maxima.

Key Features

• Fuel injection plenum gasket set for upper intake sealing
• Compatible with select 1984-1998 Nissan, Infiniti, and Mercury vehicles
• Fits upper position applications only
• Supports intake manifold resealing during maintenance or repair
• Part number AMS5176 for catalog lookup and ordering

Detailed Description

Apex AMS5176 is a fuel injection plenum gasket set made for upper intake service on a range of import vehicles. It fits 1993-1998 Mercury Villager, upper; 1993-1998 Nissan Quest, upper; 1987-1995 Nissan Pathfinder, upper; 1995 Nissan Pickup, upper; 1986-1994 Nissan D21, upper; 1990-1992 INFINITI M30, upper; 1984-1989 Nissan 300ZX, upper; and 1985-1988 Nissan Maxima, upper. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

• Replacing a leaking upper plenum gasket during intake service
• Restoring a proper seal between intake components
• Addressing vacuum leaks at the upper intake area
• Correcting rough idle or drivability issues tied to intake sealing
• Supporting maintenance on Nissan Pathfinder, Nissan Quest, and Nissan Maxima upper intake systems

Installation Notes and Tips

Install AMS5176 on the upper intake/plenum location only. Clean all mating surfaces thoroughly before assembly and inspect the intake components for warpage, carbon buildup, or damage that could affect sealing. Verify vehicle year, make, model, and upper-position fitment before installation.

Quality Assurance

Apex replacement sealing components are cataloged for application-specific fitment. Confirm AMS5176 against the vehicle’s upper intake configuration before service.