The Cummins/Onan KTA50 engine line groups 3 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 140-1548 | Element, Air Cleaner | air_filter |
| 140-2501 | Cleaner, Air (Disposable) | air_filter |
| 140-2502 | Band, Mounting – Air Cleaner | air_filter |
| FS1216 | Fuel/Water Sep Spin-On | fuel_filter |
| 502-1162 | Connector, Hose (3/8") | hose |
| 503-0685 | Clamp, Hose | hose |
| 503-1484 | Elbow, Hose (45 Deg) (7" ID) | hose |
| 503-1620 | Hose – Bulk (3/8" ID) (Order by the Foot) | hose |
| 503-1870-11 | Clamp, Hose | hose |
| 503-1870-12 | Clamp, Hose | hose |
| LF3325 | Lube, Full-Flow Spin-On | oil_filter |
| 140-1260 | Fitting, Safety Filter | other_service |
| 140-2508 | Tube, Air Inlet (7" x 9" - 3/4") | other_service |
| 140-2528 | Shield – Air In Heat | other_service |
| 309-0635-02 | Valve, Check | other_service |
| 503-1717 | Elbow, Reducer (45 Deg) (7" ID to 6" ID) | other_service |
| 503-1720 | Insert, Reducer (6" OD to 5-1/2" ID) | other_service |
| 505-0017 | Bushing, Pipe – Reducer (3/8" to 1/4") | other_service |
| 505-0376 | Elbow – 45 Deg (3/8") | other_service |
| 526-0030 | Washer, Flat (3/8") | other_service |
| 800-0055 | Screw, Cap – Hex Head (3/8–16 x 2-1/4") | other_service |
| 800-0094 | Screw, Cap – Hex Head (1/2–13 x 2") | other_service |
| 821-0029 | Screw, Self–Locking – Hex Washer Head (3/8–16 x 3/4") | other_service |
| 821-0033 | Screw, Self–Locking – Hex Washer Head (7/16–14 x 3/4") | other_service |
| 821-5004-03 | Screw, Self-Locking – Hex Washer Head (3/8–16 x 1") | other_service |
| 870-0281 | Nut, Self-Locking – Hex Washer Head (3/8–16) | other_service |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.