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MGA Part Numbers - AEH583

PART NO.  SPL.PAGE  DESCRIPTION                                                            
AEH583    TC.A.12   Stud for inlet manifold (long) (2) -(cyl.head, valves, engine, Twin
    Cam) -identification No. 1

AEH583 Stud, long is item #27 below (2), used to secure the inlet manifold to the cylinder head (Twin Cam engine).
MGA Twin Cam cylinder head parts