Apex AMS3311 Fuel Injection Plenum Gasket Set - Upper

Fuel Injection Plenum Gasket Set for GM V8 Applications

Apex AMS3311 is a fuel injection plenum gasket set for upper intake service on a wide range of GM trucks, vans, and SUVs. It is built for 1996-2002 Chevrolet Express and GMC Savana models, plus select Chevrolet, GMC, and Cadillac applications from 1996-2000.

Key Features

• Fuel injection plenum gasket set for upper intake sealing
• Fits upper position applications only
• Compatible with 1996-2002 Chevrolet Express 1500, 2500, and 3500
• Compatible with 1996-2002 GMC Savana 1500, 2500, and 3500
• Fits 1996-2000 Chevrolet C2500, C3500, K2500, K3500, Tahoe, and related GM truck platforms
• Fits 1996-2000 GMC C2500, C3500, K2500, K3500, and Yukon
• Fits 1996-1999 Chevrolet C1500, C1500 Suburban, C2500 Suburban, K1500, K1500 Suburban, K2500 Suburban, and P30
• Fits 1996-1999 GMC C1500, C1500 Suburban, C2500 Suburban, K1500, K1500 Suburban, K2500 Suburban, and P3500
• Fits 1999-2000 Cadillac Escalade, upper

Detailed Description

Apex AMS3311 is a direct-fit upper plenum sealing solution for GM fuel injection systems that require a replacement plenum gasket set. It serves applications across Chevrolet Express, GMC Savana, Chevrolet Tahoe, GMC Yukon, and multiple C/K-series trucks and Suburban models, making it a practical choice when servicing upper intake sealing on 1996-2002 GM V8 platforms. This part number, AMS3311, is listed for 150 total vehicle applications and is focused on the upper position only.

Common Repair Uses

• Upper intake manifold vacuum leaks
• Rough idle caused by plenum sealing loss
• Fuel or air leakage at the upper intake interface
• Driveability issues tied to deteriorated intake gaskets
• Service replacement during upper intake removal

Installation Notes and Tips

Confirm the vehicle year, make, model, and upper position before ordering. Clean the mating surfaces thoroughly and inspect the intake components for wear, warpage, or contamination before assembly. For best results, follow the factory service procedure for the specific Chevrolet, GMC, or Cadillac application.

Quality Assurance

Apex AMS3311 is cataloged as an automotive sealing component for upper fuel injection plenum service. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.