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Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 5.3L) >> Description and Operation >> Engine Component Description >> Intake Manifold

Intake Manifold

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The intake manifold is a 1 piece composite design that incorporates brass threaded inserts for mounting the fuel rail and throttle body. Each side of the intake manifold is sealed to the cylinder head by 8 non-reusable silicone sealing gaskets. The electronically actuated throttle body bolts to the front of the intake manifold. The throttle body is sealed by a 1 piece push in place silicone gasket. The fuel rail assembly, with 8 separate fuel injectors, is retained to the intake by 4 bolts. The injectors are seated into their individual manifold bores with O-ring seals to provide sealing. The manifold absolute pressure (MAP) sensor is installed and retained to the top of the intake manifold and sealed by an O-ring seal. The evaporative emission (EVAP) canister purge solenoid valve is retained to the manifold by a mounting bracket. There are no coolant passages within the intake manifold. The manifold is installed with the throttle body facing the rear of the engine.