Ford 2003 Mustang Workshop Manual page 1285

34. Remove the oil filter adapter.
1. Remove the oil bypass filter.
2. Remove the bolts.
3. Remove the oil filter adapter.
4. Clean and inspect the sealing surfaces.
35. Remove the LH exhaust manifold.
1. Remove the exhaust manifold nuts.
2. Remove the exhaust manifold.
3. Remove the exhaust manifold gasket and discard.
36. Disconnect the exhaust recirculation (EGR) tube (9D477) at the exhaust manifold.