One New Aftermarket Replacement Cylinder Seal Kit Fits Komatsu Backhoe Loader Models: B/H Boom: Wb140-2, Cylinder: 395001007, Between 140F10001-140F10943, Cylinder: 395001009, After 140F11531>, Wb140-2N, Cylinder: 395001007, After A20637>, Cylinder: 395001009, Between A20001-A20636, Wb140Ps-2, Cylinder: 395001007, Between 140F50001-140F50091, Cylinder: 395001009, After 140F50092>, Wb140Ps-2N, Cylinder: 395001007, After A40034>, Wb150-2N, Cylinder: 395001007, After A60029>, Wb150Aws-2N, Cylinder: 395001007, After A90002>, Wb150Ps-2N, Cylinder: 395001007, After A70010> B/H Boom (Offset Arm): Wb150Aws-2N, Cylinder: 395001009, Between A90020-A90025 Rod: 60 Mm, Bore: 120 Mm Please Note: Your Seal Kit Will Look Different. Replaces Part Number: 878000489