Core size(mm): 650*385*40, Overall size(mm): 673*463*55, Inlet/Outlet: 31/31 mm, 2 Core; Fit: 1989-1994 Mazda Familia GT 1.8L BP engine; 1990-1994 Mazda Prot??g?? LX (with VICS) 1.8L BP engine; 1990-1993 Mazda Prot??g?? GT 1.8L BP engine; 1990-1993 Mazda 323 1.6L and 1.8L BP engine; 1989-1994 Mazda Familia GT-X/GT-R & GT-Ae(JDM) 1.8L BPT/BPD turbo engine