The Cummins/Onan KT19 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 |
|---|---|---|
| 45 083 01-S | Precleaner | Air filter |
| 45 083 02-S | Air Filter | Air filter |
| 45 883 02-S1 | Air Filter/Precleaner | Air filter |
| 47 083 01-S | Air Filter | Air filter |
| 47 883 01-S1 | Air Filter/Precleaner | Air filter |
| 52 083 01-S | Precleaner | Air filter |
| 52 455 02 | Barrel wrench (9/16") | Air filter |
| 52 455 04 | Barrel wrench (1/2") | Air filter |
| 25 050 07-S | Fuel Filter 75 Microns | Fuel filter |
| FS1212 | Fuel/Water Sep Spin-On | Fuel filter |
| FS1242 | Fuel/Water Sep Spin-On | Fuel filter |
| FP-IFKKT19 | KT19 In-Frame Kit w/upper gasket set & oil pan gasket | Gasket |
| M-206576 | Turbine Inlet Mounting Gasket | Gasket |
| M-3177942 | Turbine Inlet Mounting Gasket Low Pressure | Gasket |
| M-4352576 | Upper Gasket Set | Gasket |
| M-205243 | Impeller Cast Iron | Impeller |
| M-3016825 | Roller - Injector Lever | Injector |
| M-3062141 | Roller - Injector Lever Wider | Injector |
| M-4009247 | Pin - Injector Lever | Injector |
| 25 755 05-S | Solenoid Repair Kit | Service part / kit |
| 25 755 06-S | Solenoid Repair Kit | Service part / kit |
| 25 757 02-S | Carburetor Repair Kit | Service part / kit |
| 25 757 03-S | Float Repair Kit | Service part / kit |
| 25 757 09-S | Float Repair Kit | Service part / kit |
| 25 757 11-S | Carburetor Repair Kit | Service part / kit |
| 3007525 | (3022157) KIT, LINER LINER, CYLINDER | Service part / kit |
| 3012611 | CYLINDER LINER (O/S) KIT, LINER A/R .020 inch O/S | Service part / kit |
| 3012612 | CYLINDER LINER (O/S) KIT, LINER A/R .030 Inch O/S | Service part / kit |
| 3022157 | Cylinder Liner STD | Service part / kit |
| 3023017 | Cylinder Liner +.010" UPF | Service part / kit |
| 3023018 | Cylinder Liner +.020" UPF | Service part / kit |
| 3023019 | Cylinder Liner +.030" UPF | Service part / kit |
| 3023020 | Cylinder Liner +.040" UPF | Service part / kit |
| 3096680 | Piston STC 13.8:1 Ratio | Service part / kit |
| 3096681 | Piston KT Series 15.5:1 Ratio | Service part / kit |
| 3096682 | Piston KTA Series 14.5:1 Ratio | Service part / kit |
| 3096683 | Piston 13.5:1 Ratio | Service part / kit |
| 3096684 | Piston KTA 15.7:1 Ratio | Service part / kit |
| 3096685 | Piston STC 13.9:1 Ratio | Service part / kit |
| 3628731 | Piston STC Kit | Service part / kit |
| 3630913 | Piston KTA-50-G7 | Service part / kit |
| 3631241 | Piston Kit STC 13.9:1 Ratio | Service part / kit |
| 3631242 | Piston Kit 13.5:1 Ratio | Service part / kit |
| 3631243 | Piston Kit KTA 15.7:1 Ratio | Service part / kit |
| 3631244 | Piston Kit KTA Series 14.5:1 Ratio | Service part / kit |
| 3631245 | Piston Kit KT Series 15.5:1 Ratio | Service part / kit |
| 3631246 | Piston Kit STC 13.8:1 Ratio | Service part / kit |
| 3801268 | CYLINDER LINER (O/S) KIT, LINER A/R .040 Inch O/S | Service part / kit |
| 3801269 | Liner Kit +.040" UPF | Service part / kit |
| 3803530 | Piston Assembly STC | Service part / kit |
| 3804747 | Piston Kit KTA-50-G7 | Service part / kit |
| 3804885 | Piston KTA-50-G8/G9 | Service part / kit |
| 4009220 | Cylinder Liner QSK19/KT19 STD | Service part / kit |
| 4009221 | Cylinder Liner +.020" UPF | Service part / kit |
| 4009222 | Cylinder Liner +.040" UPF | Service part / kit |
| 4009227 | Cylinder Liner KT19 Block Type #2 | Service part / kit |
| 4009233 | Cylinder Liner +.060" UPF | Service part / kit |
| 4024767 | Cylinder Liner Kit QSK19/KT19 STD | Service part / kit |
| 4024768 | Cylinder Liner Kit +.020" UPF | Service part / kit |
| 4024769 | Cylinder Liner Kit +.040" UPF | Service part / kit |
| 4024770 | Cylinder Liner Kit KT19 Block Type #2 | Service part / kit |
| 4024775 | Cylinder Liner Kit +.060" UPF | Service part / kit |
| 4089847 | Piston Kit GTA38/19 | Service part / kit |
| 4090013 | Piston Kit KTA-38-M2 | Service part / kit |
| 4090029 | Piston Kit QSK19CE | Service part / kit |
| 4090181 | Piston GTA38/19 | Service part / kit |
| 4097889 | Piston KTA-38-M2 | Service part / kit |
| 4333987 | Cylinder Liner +.020" / +.020" | Service part / kit |
| 4333988 | Cylinder Liner +.060" / +.020" | Service part / kit |
| 4333989 | Cylinder Liner +.060" / STD | Service part / kit |
| 4333991 | Cylinder Liner QSK19 STD/STD | Service part / kit |
| 4371771 | Cylinder Liner Kit +.020" / +.020" | Service part / kit |
| 4371772 | Cylinder Liner Kit +.060" / +.020" | Service part / kit |
| 4371773 | Cylinder Liner Kit +.060" / STD | Service part / kit |
| 4371779 | Cylinder Liner Kit QSK19 STD/STD | Service part / kit |
| 47 150 03-S | Breaker Points | Service part / kit |
| 4910463 | Piston QSK19R/M | Service part / kit |
| 4910465 | Piston QSK Series | Service part / kit |
| 4916177 | Piston GTA/GQSK19 | Service part / kit |
| 4918058 | Piston QSK19CE | Service part / kit |
| 4922319 | Piston QSK19C | Service part / kit |
| 4955233 | Piston Kit QSK19R/M | Service part / kit |
| 4955235 | Piston Kit QSK Series | Service part / kit |
| 4955236 | Piston Kit QSK19C | Service part / kit |
| 4955238 | Piston Kit GTA/GQSK19 | Service part / kit |
| 52 098 12-S | Bendix Drive 9-Tooth | Service part / kit |
| 52 455 03 | Flywheel strap wrench (Kohler special tool) | Service part / kit |
| 52 755 13-S | Condenser | Service part / kit |
| 52 755 48-S | Ignition Coil (Battery) | Service part / kit |
| KTA19 | Engine Model | Service part / kit |
| M-205080 | Regulator Plunger | Service part / kit |
| M-205091 | Valve Lock | Service part / kit |
| M-205093 | Exhaust Valve Seat | Service part / kit |
| M-205094 | Valve Spring Retainer | Service part / kit |
| M-205840 | Connecting Rod Bearing STD | Service part / kit |
| M-205841 | Connecting Rod Bearing .010 | Service part / kit |
| M-205842 | Connecting Rod Bearing .020 | Service part / kit |
| M-205843 | Connecting Rod Bearing .030 | Service part / kit |
| M-3002834 | Camshaft Bearing | Service part / kit |
| M-3007525 | Cylinder Liner Kit | Service part / kit |
| M-3022157 | Cylinder Liner | Service part / kit |
| M-3035362 | Shut-off Valve Assy 24V | Service part / kit |
| M-3043909 | Connecting Rod Bushing | Service part / kit |
| M-3052819 | Intake Valve Seat - Tribaloy | Service part / kit |
| M-3066877 | Camshaft | Service part / kit |
| M-3066882 | Camshaft variant | Service part / kit |
| M-3202210 | Valve Guide | Service part / kit |
| M-3643725 | Valve Spring | Service part / kit |
| M-4009220 | Cylinder Liner KT19 Thick Flange | Service part / kit |
| M-4009227 | Cylinder Liner KT19 | Service part / kit |
| M-4024767 | Liner Kit KT19 Thick Flange | Service part / kit |
| M-4024770 | Liner Kit KT19 | Service part / kit |
| M-4024808 | Fuel Solenoid Kit | Service part / kit |
| M-4024809 | Solenoid Repair Kit 24V | Service part / kit |
| M-AR12270 | Main Bearing Set STD | Service part / kit |
| M-AR12271 | Main Bearing Set .010 | Service part / kit |
| M-AR12272 | Main Bearing Set .020 | Service part / kit |
| M-AR12273 | Main Bearing Set .030 | Service part / kit |
| 52 559 03-S | Mechanical Fuel Pump | Pump |
| M-3011389 | Water Pump | Pump |
| M-3047549 | Lube Oil Pump Assy | Pump |
| M-3803153 | Water Pump Repair Kit | Pump |
| M-69521 | Pump Bushings | Pump |
| 4308809 | Flat Seal for Cylinder Liner | Seal |
| 4333984 | D-Type Seal Liner | Seal |
| 4371769 | Seal Kit | Seal |
| 4371770 | D-Type Seal Kit | Seal |
| M-186780 | Seal | Seal |
| M-205898 | Pump Mounting O-ring | Seal |
| M-207135 | Pump Mounting Seal | Seal |
| M-3007517 | Piston Cooling Nozzle with seal | Seal |
| M-3035342 | Banjo Sealing Washer | Seal |
| 52 132 02-S | Spark Plug | Spark plug |
| RBL15V | Spark plug, Champion RBL15V or equivalent | Spark plug |
| M-3076489 | Thermostat 180F | Thermostat |
| M-3032634 | Turbocharger Repair Kit T18A | Turbocharger |
| M-3803257 | Turbocharger Repair Kit HC5A | Turbocharger |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.