The Enginetech MKIS3.1AP Master Engine Rebuild Kit is a complete overhaul package for the 1991-1994 Isuzu 3.1L V6 (- cid), machined to a 3.545" finished bore (.040" over bore).Kit contents:P1592(6) - Piston SetM89166 - Piston Ring SetBB285J - Bearing Set...