Upper Engine Intake Manifold – GM (12611485)

Upper Engine Intake Manifold is the intake manifold that feeds air into the cylinder heads. Gasket surfaces and injector bore placement are specific to the engine family, and warping at the flange is the usual cause of a lean code.

Replace the Engine Intake Manifold when the flange face is warped, when a runner has cracked, or when an injector bore is damaged. Confirm that the gasket surface is flat, or the replacement will leak the same way.

The Engine Intake Manifold in this listing carries part number 12611485 and sits in the Throttle Bodies & Intake category. The number stamped on the original part is the only reliable cross-reference.

The stock here is genuine GM, and this Engine Intake Manifold keeps the original engineering number, which matters once a number has been superseded more than once.

This is the upper unit in the assembly; confirm the location on your vehicle before ordering.