Apex AMS8720 Fuel Injection Plenum Gasket Set - Upper

Fuel Injection Plenum Gasket Set for Toyota and Lexus

The Apex AMS8720 fuel injection plenum gasket set is a direct-fit sealing solution for upper intake service on select Toyota and Lexus vehicles. It is built for applications where the upper plenum must seal properly to maintain intake integrity and stable engine operation.

• Fuel injection plenum gasket set for upper intake sealing
• Compatible with select Toyota Highlander, Lexus RX400h, Toyota Solara, Lexus ES330, Lexus RX330, Toyota Camry, and Toyota Sienna applications
• Fits 2004-2010 Toyota Highlander, Upper
• Fits 2006-2008 Lexus RX400h, Upper
• Fits 2004-2008 Toyota Solara, Upper
• Fits 2004-2006 Lexus ES330, Upper
• Fits 2004-2006 Lexus RX330, Upper
• Fits 2004-2006 Toyota Camry, Upper
• Fits 2004-2006 Toyota Sienna, Upper
• Part number AMS8720 for application matching and service lookup

Detailed Fitment and Function

Apex AMS8720 is an upper plenum gasket set used during intake manifold service to restore the seal between the plenum and mating surfaces. This part is relevant for Toyota Camry and Toyota Sienna upper intake repairs, as well as Lexus ES330 and Lexus RX330 upper plenum service. It also applies to Toyota Highlander, Lexus RX400h, and Toyota Solara upper intake applications across the listed model years. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues Addressed

• Intake air leaks at the upper plenum sealing surface
• Vacuum leaks after intake manifold removal or service
• Rough idle caused by compromised intake sealing
• Driveability concerns related to unmetered air entering the intake tract
• Reassembly needs after upper intake maintenance on listed Toyota and Lexus models

Installation Notes and Tips

Clean both mating surfaces thoroughly before installation and inspect the plenum and intake surfaces for damage, warping, or residue. Follow the vehicle service procedure for torque sequence and tightening specifications, and verify that all vacuum and intake connections are seated correctly during reassembly. Confirm upper-position application before ordering AMS8720.

Quality Assurance

Apex identifies AMS8720 as a service part for upper intake sealing on the listed Toyota and Lexus applications. Verify year, make, model, and position against the vehicle before installation to ensure correct application matching.