CT3403 - TH350 leaking from the front? Solve the problem with our front pump leak sealing kit for the GM TH350 Transmission, 1969 & up. All new parts. Items included: Front Pump Gasket Front Pump Oring Front Pump Metal Clad Seal Front Pump Bushing Front Pump Bolt Washers (set of 8) CT3403 - TH350 leaking from the front? Solve the problem with our front pump leak sealing kit for the GM TH350 Transmission, 1969 & up. All new parts. Items included: Front Pump Gasket Front Pump Oring Front Pump Metal Clad Seal Front Pump Bushing Front Pump Bolt Washer kit