The Cummins/Onan 6CTAA8.3 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 |
|---|---|---|
| 503-1134 | Clamp, Hose | Clamp |
| 155-3164-05 | Muffler, Critical | Muffler |
| 800-2072 | Screw, Cap - Hex Head (M8 x 1.25 x 100) | Screw |
| A028Z105 | Sender, Low Coolant | Sender |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.