FAST 54009-8 LSX 92mm Intake Manifold Port Seals for LS1/LS2/LS6 Cathedral Port

Vehicle Fitment

• GM LS1, LS2, LS6 cathedral-port V8 engines equipped with the FAST LSX 92mm intake manifold

Fitment Notes

• Fits the FAST LSX 92mm intake manifold only - not compatible with the LSXR 102mm manifold
• Universal application part; not tied to a specific vehicle year, make, or model

Features

• Direct-replacement seal set for the FAST LSX 92mm intake manifold
• Molded from Buna rubber for reliable heat and fuel resistance
• Cathedral port design matches LS1/LS2/LS6 cylinder head geometry
• Restores a factory-tight seal between manifold and head
• Sold as a complete set of 8 for full manifold coverage

Specifications

• Gasket material: Buna rubber
• Port style: Cathedral
• Quantity: Set of 8
• Position: Intake manifold-to-cylinder head (all ports)
• Upper plenum gasket: Not included

Included Components

• 8x Intake Manifold Port Seals

Product Description

The FAST 54009-8 seal set replaces the worn or damaged port seals on a FAST LSX 92mm intake manifold, restoring an airtight connection to LS1, LS2, and LS6 cathedral-port cylinder heads. Made from Buna rubber, each seal is engineered to match the manifold's factory port geometry, preventing vacuum leaks that can cause rough idle or inconsistent airflow. This set of 8 covers the full manifold and is ideal for anyone servicing or rebuilding a FAST LSX 92mm setup.