The Cummins/Onan K38 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 |
|---|---|---|
| 3822574 | Rocker lever actuator | Actuator |
| 3810242 | Air Equipment Manual | Air filter |
| 3810257 | unloader valve cap spring | Air filter |
| 3810347 | unloader valve cap spring | Air filter |
| 3377193 | Battery Tester | Battery tester |
| 3823875 | Belt tension gauge | Belt |
| 3305373 | Cummins Part No. DCA4 Units | Coolant filter |
| 3315115 | Cummins Part No. DCA4 Units | Coolant filter |
| 3315116 | Cummins Part No. DCA4 Units | Coolant filter |
| 3315459 | Cummins Part No. DCA4 Units | Coolant filter |
| 3316053 | Cummins Part No. DCA4 Units | Coolant filter |
| 3317428 | Cummins Part No. DCA4 Units | Coolant filter |
| 3318157 | Cummins Part No. DCA4 Units | Coolant filter |
| 3318318 | Cummins Part No. DCA4 Units | Coolant filter |
| 3318319 | Cummins Part No. DCA4 Units | Coolant filter |
| KTA38-0201 | Engine Control Module | ECM / ECU |
| KTA38-0202 | Engine Control Unit | ECM / ECU |
| 3315844 | Fuel filter (without draincock) | Fuel filter |
| 3315847 | Fuel filter (with draincock) | Fuel filter |
| FF105 | Fuel filter (Fleetguard® without draincock) | Fuel filter |
| FF105D | Fuel | Fuel filter |
| 3822575 | Injector and valve adjustment kit | Injector |
| FP-3001314 | Cup, Injector (10-.0085-10°) | Injector |
| FP-3003933 | Cup, Injector (9-.0085-10°) | Injector |
| FP-3005963 | Cup, Injector (9-.0075-10°) | Injector |
| 3376000 | Injector puller | Injector puller |
| 3376497 | Injector puller | Injector puller |
| 3379056 | Air Equipment Manual | Manual |
| 3379071 | Injector PT Rebuild Manual, Bulletin No. 3379071. | Manual |
| 3810235 | Exhaust Gas Turbocharger, RR-153, Instructions for Operation and Maintenance or Bulletin No. 3810235. | Manual |
| 3810313 | PT (Type D) STC injector shop manual | Manual |
| 3810325 | Exhaust-Gas Turbocharger, RR-151-12, Instructions for Operation and Maintenance or Bulletin No. 3810325. | Manual |
| 3810432 | K38 and K50 Troubleshooting & Repair Manual | Manual |
| 193736 | O-ring (3), Part No. 193736, has a green dot or stripe. | O ring |
| 205216 | O-ring (2), Part No. 205216, has no markings. | O ring |
| 3010510 | O-ring (1), Part No. 3010510, has a red dot or stripe. | O ring |
| 3313279 | Full flow oil filter (Cummins Part No. 3313279) | Oil filter |
| 3313283 | Bypass oil filter (Cummins Part No. 3313283) | Oil filter |
| 3313287 | Full flow oil filter (Cummins Part No. 3313287) | Oil filter |
| 3375049 | Oil Filter Wrench | Oil filter |
| 3318201 | Battery Cable Group | Service part / kit |
| 33754364 | crack detection developer | Service part / kit |
| 3376592 | Inch Pound Torque Wrench | Service part / kit |
| 3810304 | K38 and K50 Shop Manual | Service part / kit |
| 3822648/3823348 | Top Stop Tappet Setting Tool (STC equipped engines only) | Service part / kit |
| FP-3007525 | Kit, Cylinder Liner (Standard) | Service part / kit |
| FP-3012611 | Kit, Cylinder Liner (.010 O.S.) | Service part / kit |
| FP-3012612 | Kit, Cylinder Liner (.020 O.S.) | Service part / kit |
| FP-3801268 | Kit, Cylinder Liner (.030 O.S.) | Service part / kit |
| FP-3801269 | Kit, Cylinder Liner (.040 O.S.) | Service part / kit |
| KTA38-0203 | Engine Control System | Service part / kit |
| FP-3011076 | Seal, O-Ring (Cylinder Liner) | Seal |
| FP-3014668 | Seal, O-Ring (Cylinder Liner) | Seal |
| FP-3081489 | Seal, Crevice (Cylinder Liner) | Seal |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.