Head gasket MITSUBISHI K3B BOLENS CASE ISEKI HITACHI SATOH Head gasket used in MITSUBISHI K3B engines - 1 piece. PARAMETERS bore diameter: 70mm 3cyl. MODELS BOLENS machine model: FB16, G172, G174 CASE machine model: 234, 235 ISEKI machine model: TX1510, TX2160, TX1704 MITSUBISHI engine type: K3B Machine model: D1550, MT1401 SATOH machine model: S470, ST1520, ST1540 HITACHI