Apex AVC503S Engine Valve Cover Gasket Set

Apex AVC503S Valve Cover Gasket Set

The Apex AVC503S engine valve cover gasket set is built for direct-fit sealing service on select Nissan applications. It is a practical choice when servicing valve cover leaks on 1991-1994 Nissan Sentra and 1991-1993 Nissan NX models with the listed sealing configuration.

Key Features

• Engine valve cover gasket set for sealing the valve cover to the cylinder head
• Fits 1991-1994 Nissan Sentra, w/Grommets & Spark Plug Tube Seals
• Fits 1991-1993 Nissan NX, w/Spark Plug Tube Seals
• Direct replacement for service work on Nissan Sentra and Nissan NX engines
• Part number AVC503S for catalog and fitment lookup

Detailed Description

Use the Apex AVC503S when replacing a leaking or deteriorated valve cover seal on the specified Nissan Sentra and Nissan NX applications. This engine valve cover gasket set is intended for vehicles that require spark plug tube seals, and the Sentra fitment also calls for grommets. If you are searching for a Nissan Sentra valve cover gasket set or a Nissan NX valve cover gasket set, AVC503S provides the correct fitment reference for those model years.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Oil seepage around the valve cover perimeter
• Oil leaks entering spark plug tube areas
• Hardening, cracking, or flattening of the original gasket material
• Maintenance service after valve cover removal
• Seal replacement on 1991-1994 Nissan Sentra and 1991-1993 Nissan NX engines

Installation Notes and Tips

Clean the sealing surfaces thoroughly before installation and inspect the valve cover for warpage or damage. Replace the gasket only on the applications listed for AVC503S, and verify that the vehicle requires spark plug tube seals; the Sentra fitment also specifies grommets. Confirm engine configuration and model year before ordering.

Quality Assurance

Apex AVC503S is cataloged as an engine sealing component for the listed Nissan applications. Verify fitment against the vehicle’s year, model, and sealing requirements before installation.