The Cummins/Onan MAJB-1 engine line groups 2 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| CS-1309 | Cutaway Side View of Sea Water Pump | cutaway_side_view_of_sea_water_pump |
| ES-1001 | TESTING ARMATURE FOR GROUNDS | other_service |
| ES-1002 | TESTING ARMATURE FOR SHORTS | other_service |
| ES-1414-1 | CHOKE PLATE SETTING | other_service |
| ES-1590 | BREAKER POINTS | other_service |
| ES-1591 | CONTROL PANEL | other_service |
| ES-1663 | CONTROL INTERIOR | other_service |
| FS-1620 | MAIN FUEL ADJUSTMENT | other_service |
| FS-1690 | FLOAT ADJUSTMENT | other_service |
| XFS-1619 | GOVERNOR ADJUSTMENT LINKAGE | other_service |
| XFS-1621 | CARBURETOR COMPONENTS | other_service |
| FS-1334 | STARTER MOTOR | pump |
| CS-1055 | Siphon Break Valve | siphon_break_valve |
| Exs-1156 | Siphon Break Valve Top Cover | siphon_break_valve_top_cover |
| FS-1688 | SPARK PLUG | spark_plug |
| CS-1284 | Thermostat | thermostat |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.