Apex AMS4254 Fuel Injection Plenum Gasket Set - Upper

Fuel Injection Plenum Gasket Set for Ford, Mazda, Mercury

Apex AMS4254 is a fuel injection plenum gasket set for upper intake sealing on select Ford, Mazda, and Mercury applications. It is built for vehicles that need a precise plenum-to-intake seal to maintain proper air and fuel delivery performance.

Key Features

• Fuel injection plenum gasket set for upper intake service
• Fits 2002-2008 Ford Ranger, Upper
• Fits 2001-2007 Ford Taurus, Upper
• Fits 2002-2007 Mazda B3000, Upper
• Fits 2001-2005 Mercury Sable, Upper
• Direct-fit sealing solution for listed applications
• Part number: AMS4254

Detailed Description

This Apex plenum gasket set is used at the upper intake sealing surface to help maintain a tight seal between intake components. For Ford Ranger, Ford Taurus, Mazda B3000, and Mercury Sable applications, a correct upper plenum gasket is important for stable intake sealing and consistent engine operation. Part number AMS4254 is cataloged for the listed upper-position vehicles only.

What It Helps Address

• Upper intake vacuum leaks
• Air leakage at the plenum sealing surface
• Rough idle caused by intake sealing issues
• Driveability problems related to unmetered air entry
• Loss of sealing integrity during intake service

Installation Notes and Tips

Clean both mating surfaces thoroughly before installation and inspect the intake flange for warpage, carbon buildup, or damage. Follow the vehicle service manual for torque sequence and tightening specifications, and verify that the upper intake is aligned correctly before final tightening. Confirm fitment by year, make, model, and upper position before ordering AMS4254.

Quality Assurance

Apex AMS4254 is cataloged for the specified Ford, Mazda, and Mercury upper intake applications and cross-references Fel-Pro MS 98016 T for the same application.