Rectangle Port Cylinder Head Intake Port Block-Off Plates (Pair)

Protect Your Engine During Storage or Service

Fits the following cylinder heads: LS3, L92, L99, LSA, LS9

These precision-cut .125" thick aluminum block-off plates are designed to seal off the intake ports on LS cylinder heads during disassembly, engine storage, or maintenance. They help prevent debris, dust, or foreign objects from entering the intake runners—protecting your investment and simplifying your rebuild process.

Features:

• CNC-cut from durable .125" thick aluminum
• Supplied in raw aluminum finish—ready for paint or powder coating
• Includes (10) M6 x 20mm flange bolts for easy installation
• Perfect fit for all LS-style intake ports

Ideal for engine builders, race teams, or anyone storing or working on an LS engine. Whether you're prepping for a build or simply keeping things clean in the shop, these block-off plates are a must-have.