Engine Intake Manifold Plenum – ACDelco (12580250)

Engine Intake Manifold Plenum routes filtered air from the throttle body to the intake ports. It carries no exhaust gas, so corrosion and heat damage are not the usual failure modes here; leaking flange gaskets and cracked plastic plenums are.

Replace the Intake Manifold Plenum when unmetered air is entering past the gasket, when the vacuum ports will not seal, or when the original has cracked from heat cycling. Pressure-test the intake after fitting.

Reference number for the Intake Manifold Plenum: 12580250. It is filed under Throttle Bodies & Intake, and it is the number that has to match the part coming off the vehicle.

Genuine ACDELCO part for the Intake Manifold Plenum. Where the manufacturer has superseded a number, the current reference is the one that ships.