Right Exhaust Manifold - 1987 Mustang

The right exhaust manifold for the 1987 Ford Mustang 5.0L HO V8 is a robust cast-iron component critical to Fox Body exhaust systems. Identified by casting marks E7TE-9430-C or the superseding E6SE-9430-C found on 1986-1988 production units, this passenger-side manifold bolts to the E7TE cylinder head and interfaces with the catalytic converter via a three-bolt flange. When sourcing from salvage yards, prioritize 1986-1993 Mustang GT or LX 5.0L donors, as these share identical mounting geometry and port spacing, though service replacement part E7ZZ-9430-A remains the definitive catalog number. Inspect carefully for cracks between the center ports—a common thermal fatigue failure—and verify the flange surface isn't warped to prevent exhaust leaks. Note that federal emissions models feature AIR injection bungs, while California-spec cars may lack these provisions. Installation requires new gaskets and torque-to-yield hardware tightened to 18-23 ft-lbs in a center-outward sequence. Compatible alternatives include 1986-1992 Lincoln Mark VII LSC manifolds, though heat shield mounting tabs may differ slightly.