Review on 🔧 FEL-PRO MS94452 Plenum Gasket Set by Ryan Brady

Works great to get my lean cylinder codes (P0171, P0174) due to vacuum leaks on my F150 4.2 liter - Fix engine. I only wish it had a different idle valve seal that would have to be removed to remove the top manifold on my truck. On high mileage cars like mine it takes a lot of effort to clean the dirt covered inner surfaces of the intake manifold but this is relatively easy to remove with brake cleaner. Note: Several cans of brake cleaner may be required to prepare for assembly. Also get the Dorman Intake Manifold Isolation Bolt Kit 55164 (best price at Revain). These bolts hold the plastic lower manifold to the metal part of the intake manifold and are notoriously prone to leaks.