The Cummins/Onan F3.8 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 |
|---|---|---|
| B4.5 | 90-149 kW (120-200 hp) | engine |
| B6.7 | 116-209 kW (155-280 hp) | engine |
| F3.8 | 55 kW (74 hp) | engine |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.