Cummins 6CT, 6CTA & 6CTAA 8.3 Parts
8.3L C-series parts hub
Find Cummins 6C, 6CT, 6CTA and 6CTAA 8.3 parts without mixing them with 5.9L B-series components.
Start with the engine serial number (ESN), CPL, complete model suffix and the number on the removed component. The 8.3L family name narrows the search, but fuel, air, cooling and accessory parts can still change by rating and application.
Confirm the C-Series Model Before Choosing Parts
The model code describes the broad engine configuration; it does not identify every service part. Cummins maintains separate current product information for 6CT/6CTA8.3 engines and 6CTAA8.3 generator applications. Use those family references for orientation, then use the ESN/CPL and removed-part number for fitment.
| Model code | Broad configuration | Details still required for parts matching |
|---|---|---|
| 6C / 6C8.3 | C-series 8.3L base designation | Aspiration, application, ESN/CPL and original part number |
| 6CT / 6CT8.3 | Turbocharged C-series configuration | Rating, injection equipment, turbo tag, cooling and accessory layout |
| 6CTA / 6CTA8.3 | Turbocharged and aftercooled configuration | Aftercooler arrangement, rating suffix, application and service record |
| 6CTAA / 6CTAA8.3 | Air-to-air aftercooled, application-specific configuration | Complete suffix, rated speed, ESN/CPL and installed package |
Shop 6CT and 6CTA Parts by Repair System
Overhaul and Cylinder Parts
Match liners, pistons, bearings, gasket sets and cylinder components to the build and repair size.
Crankshaft and Internal Parts
Confirm crankshaft number, journal size, gear arrangement and block configuration before ordering.
Fuel System
Use the injection-pump tag and injector number; do not select from the words “Cummins 8.3” alone.
Turbocharger and Air System
Match the turbo identification number, housing orientation, outlet positions and application.
Cooling System
Water pumps, oil coolers and thermostats can change with the housing, rotation and installed cooling package.
Starting System
Check voltage, mounting pattern, pinion teeth, rotation and the original starter number.
Featured Cummins 6CT, 6CTA and 6CTAA 8.3 Parts
These 12 current catalog listings cover the rotating assembly, cylinder components, fuel system, turbocharger, cooling and starting system. Each product title explicitly identifies a 6C, 6CT, 6CTA or 6CTAA application, but the ESN, CPL and removed-part number must still be checked before ordering.
Why these products are not one universal kit: the product grid represents different repair routes and engine configurations. A 6CT crankshaft, 6CTA injection pump and 6CTAA turbocharger are separate purchases; verify the exact engine build rather than ordering the complete row as a package.
Cummins 6C, 6CT, 6CTA & 6CTAA 8.3L Parts Reference
Use this table for the Cummins C-series 8.3L family. Rows that also list ISC or ISL remain here only when the source record explicitly includes a 6C-series model.
| Product Description | Product Category | Manufacturer | Model | Product Subset | Part Number | Weight |
|---|---|---|---|---|---|---|
| CUMMINS 6C BRG, MAIN SET STD 6C PART: C3802210 | BEARINGS | CUMMINS | 6C | BRG, MAIN SET STD 6C | C3802210 | 5 |
| CUMMINS 6C BRG, MAIN SET 0.75MM 6C PART: C3802213 | BEARINGS | CUMMINS | 6C | BRG, MAIN SET 0.75MM 6C | C3802213 | 5 |
| CUMMINS 6C BRG, MAIN SET 0.50MM 6C PART: C3802212 | BEARINGS | CUMMINS | 6C | BRG, MAIN SET 0.50MM 6C | C3802212 | 5 |
| CUMMINS 6C BRG, MAIN SET 0.25MM 6C PART: C3802211 | BEARINGS | CUMMINS | 6C | BRG, MAIN SET 0.25MM 6C | C3802211 | 5 |
| CUMMINS 6C TENSIONER – BELT PART: 3936213 | BELTS AND TENSIONERS | CUMMINS | 6C | TENSIONER – BELT | 3936213 | 3.25 |
| CUMMINS 6C TENSIONER, BELT,6C PART: 3945527 | BELTS AND TENSIONERS | CUMMINS | 6C | TENSIONER, BELT,6C | 3945527 | 3.25 |
| CUMMINS 6CTA 8.3L CAMSHAFT PART: 3923478 | CAMSHAFTS | CUMMINS | 6CTA 8.3L | CAMSHAFT | 3923478 | 27 |
| CUMMINS 6CTA 8.3L CAMSHAFT PART: 3938163 | CAMSHAFTS | CUMMINS | 6CTA 8.3L | CAMSHAFT | 3938163 | 27 |
| CUMMINS 6CT CAMSHAFT, 6C (3923478) PART: C3924471 | CAMSHAFTS | CUMMINS | 6CT | CAMSHAFT, 6C (3923478) | C3924471 | 26 |
| CUMMINS 6C ROD, CONNECTING, C Series PART: C3901383 | CONNECTING RODS | CUMMINS | 6C | ROD, CONNECTING, C Series | C3901383 | 10 |
| CUMMINS 6C COVER – FRONT GEAR HSG PART: 3925230 | COVERS | CUMMINS | 6C | COVER – FRONT GEAR HSG | 3925230 | 5 |
| CUMMINS 6C COVER – GEAR PART: 3916193 | COVERS | CUMMINS | 6C | COVER – GEAR | 3916193 | 5 |
| CUMMINS 6CTA / 8.3L CRANKSHAFT PART: 3918986 | CRANKSHAFTS | CUMMINS | 6CTA / 8.3L | CRANKSHAFT | 3918986 | 175 |
| CUMMINS 6CTA / 8.3L CRANKSHAFT – BARE PART: 3917320 | CRANKSHAFTS | CUMMINS | 6CTA / 8.3L | CRANKSHAFT – BARE | 3917320 | 175 |
| CUMMINS 6CT 8.3L CRANKSHAFT, 6C PART: C3918986 | CRANKSHAFTS | CUMMINS | 6CT 8.3L | CRANKSHAFT, 6C | C3918986 | 180 |
| CUMMINS 6C 8.3 CYLINDER KIT – BEFORE 1991 PART: 3802372 | CYLINDER KITS | CUMMINS | 6C 8.3 | CYLINDER KIT – BEFORE 1991 | 3802372 | 35 |
| CUMMINS 6CTA (8.3L, DRY) MANIFOLD – EXHAUST PART: 3931441 | EXHAUST MANIFOLD | CUMMINS | 6CTA (8.3L, DRY) | MANIFOLD – EXHAUST | 3931441 | 50 |
| CUMMINS 6C FLYWHEEL – THICK GEAR PART: 3922645 | FLYWHEELS | CUMMINS | 6C | FLYWHEEL – THICK GEAR | 3922645 | 52 |
| CUMMINS 6C PUMP, FUEL TRANSFER 6C PART: C3917998 | FUEL TRANSFER PUMPS | CUMMINS | 6C | PUMP, FUEL TRANSFER 6C | C3917998 | 1 |
| CUMMINS 6C GASKET, CYLINDER HEAD 6C PART: C3938267 | GASKET SETS (CYLINDER HEAD) | CUMMINS | 6C | GASKET, CYLINDER HEAD 6C | C3938267 | 1.15 |
| CUMMINS 6C GASKET, BOTTOM SET 6C PART: C3800348 | GASKET SETS (LOWER ENGINE) | CUMMINS | 6C | GASKET, BOTTOM SET 6C | C3800348 | 3.55 |
| CUMMINS 6C GASKET, TOP SET 6C PART: C4025271 | GASKET SETS (UPPER ENGINE) | CUMMINS | 6C | GASKET, TOP SET 6C | C4025271 | 5 |
| CUMMINS 6CT INJECTOR – FUEL PART: 3928384 | INJECTORS | CUMMINS | 6CT | INJECTOR – FUEL | 3928384 | 1 |
| CUMMINS 6C KIT – CYLINDER BLOCK PART: 3802398MBK | KITS (CYLINDER BLOCK) | CUMMINS | 6C | KIT – CYLINDER BLOCK | 3802398MBK | 12 |
| CUMMINS 6C KIT – CYLINDER HEAD PART: 3802398MHK | KITS (CYLINDER HEAD) | CUMMINS | 6C | KIT – CYLINDER HEAD | 3802398MHK | 8.3 |
| CUMMINS 6C KIT – CYLINDER PART: 3802403 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT – CYLINDER | 3802403 | 16.32 |
| CUMMINS 6C KIT – CYLINDER PART: 3802404 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT – CYLINDER | 3802404 | 15 |
| CUMMINS 6C KIT – CYLINDER PART: 3934585 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT – CYLINDER | 3934585 | 15 |
| CUMMINS 6C KIT – CYLINDER PART: CK9247-7792 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT – CYLINDER | CK9247-7792 | 16.32 |
| CUMMINS 6C KIT – CYLINDER PART: CK9247-9937 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT – CYLINDER | CK9247-9937 | 16.32 |
| CUMMINS 6C KIT – CYLINDER LINER PART: 3802370-6 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT – CYLINDER LINER | 3802370-6 | 60 |
| CUMMINS 6C KIT – CYLINDER LINER PART: 3802407-6 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT – CYLINDER LINER | 3802407-6 | 60 |
| CUMMINS 6CTA KIT – CYLINDER PART: 3802406 | KITS (CYLINDER LINERS) | CUMMINS | 6CTA | KIT – CYLINDER | 3802406 | 15 |
| CUMMINS 6C LINER, THIN WALL BLOCK 6C PART: C3907792 | KITS (CYLINDER LINERS) | CUMMINS | 6C | LINER, THIN WALL BLOCK 6C | C3907792 | 9 |
| CUMMINS 6C LINER, THICK WALL BLOCK 6C PART: C3919937 | KITS (CYLINDER LINERS) | CUMMINS | 6C | LINER, THICK WALL BLOCK 6C | C3919937 | 9 |
| CUMMINS 6C KIT, LINER THIN WALL BLOCK PART: C3802370 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT, LINER THIN WALL BLOCK | C3802370 | 10 |
| CUMMINS 6C KIT, LINER THICK WALL BLOCK PART: C3802407 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT, LINER THICK WALL BLOCK | C3802407 | 9.5 |
| CUMMINS 6C KIT, LINER LATE C SERIES PART: C3800328 | KITS (CYLINDER LINERS) | CUMMINS | 6C | KIT, LINER LATE C SERIES | C3800328 | 9.5 |
| CUMMINS 6CT KIT, CYL THIN WALL 6C PART: CPLK9247 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THIN WALL 6C | CPLK9247 | 15.5 |
| CUMMINS 6CT KIT, CYL THIN WALL 6C PART: C3802401 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THIN WALL 6C | C3802401 | 15.5 |
| CUMMINS 6CT KIT, CYL THIN WALL 6C PART: C3802400 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THIN WALL 6C | C3802400 | 15.5 |
| CUMMINS 6CT KIT, CYL THIN WALL 6C PART: C3802399 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THIN WALL 6C | C3802399 | 15.5 |
| CUMMINS 6CT KIT, CYL THIN WALL 6C PART: C3802388 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THIN WALL 6C | C3802388 | 15.5 |
| CUMMINS 6CT KIT, CYL THIN WALL 6C PART: C3802372 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THIN WALL 6C | C3802372 | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C, SHORT LINER PART: CPLK9247S | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C, SHORT LINER | CPLK9247S | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C, SHORT LINER PART: CPLK9161S | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C, SHORT LINER | CPLK9161S | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C, SHORT LINER PART: CPLK5878S | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C, SHORT LINER | CPLK5878S | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C, SHORT LINER PART: C3934580 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C, SHORT LINER | C3934580 | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C, SHORT LINER PART: C3802406S | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C, SHORT LINER | C3802406S | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C SHORT LINER PART: C3802404S | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C SHORT LINER | C3802404S | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: CPLK9247L | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | CPLK9247L | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: CPLK9161L | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | CPLK9161L | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: CPLK5878L | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | CPLK5878L | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: C3802406 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | C3802406 | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: C3802405 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | C3802405 | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: C3802404 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | C3802404 | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: C3802403S | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | C3802403S | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: C3802403 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | C3802403 | 15.5 |
| CUMMINS 6CT KIT, CYL THICK WALL 6C PART: C3802402 | KITS (CYLINDER LINERS) | CUMMINS | 6CT | KIT, CYL THICK WALL 6C | C3802402 | 15.5 |
| CUMMINS 6C INFRAME KIT, 6C,.010 PART: IF3802404-6C.010 | KITS (INFRAME/OVERHAUL) | CUMMINS | 6C | INFRAME KIT, 6C,.010 | IF3802404-6C.010 | 0 |
| CUMMINS 6C KIT – INJECTOR – FUEL PART: 3802648 | KITS (INJECTOR) | CUMMINS | 6C | KIT – INJECTOR – FUEL | 3802648 | 1.5 |
| CUMMINS 6C KIT – REPAIR – COMPRESSOR HEAD PART: 3801808M | KITS (MISCELLANEOUS) | CUMMINS | 6C | KIT – REPAIR – COMPRESSOR HEAD | 3801808M | 0.88 |
| CUMMINS 6C KIT – PISTON PART: 3802460 | KITS (PISTON) | CUMMINS | 6C | KIT – PISTON | 3802460 | 5 |
| CUMMINS 6CT KIT – PISTON PART: 3802397 | KITS (PISTON) | CUMMINS | 6CT | KIT – PISTON | 3802397 | 5 |
| CUMMINS 6CT KIT – PISTON PART: 3802474 | KITS (PISTON) | CUMMINS | 6CT | KIT – PISTON | 3802474 | 5 |
| CUMMINS 6CT KIT – PISTON PART: 4089433 | KITS (PISTON) | CUMMINS | 6CT | KIT – PISTON | 4089433 | 6 |
| CUMMINS 6CTA / ISC / ISL COOLER – OIL – 15 PLATE PART: 5284362 | OIL COOLERS | CUMMINS | 6CTA / ISC / ISL | COOLER – OIL – 15 PLATE | 5284362 | 6 |
| CUMMINS 6C COOLER, OIL 12 PLATE 6C PART: C3918175 | OIL COOLERS | CUMMINS | 6C | COOLER, OIL 12 PLATE 6C | C3918175 | 10.4 |
| CUMMINS 6C PUMP, OIL 6C (VENTED ROTOR) PART: C3930338 | OIL PUMPS | CUMMINS | 6C | PUMP, OIL 6C (VENTED ROTOR) | C3930338 | 6 |
| CUMMINS 6C 8.3L PISTON – ENGINE PART: 3923163 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE | 3923163 | 4.3 |
| CUMMINS 6C 8.3L PISTON – ENGINE PART: 3923164 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE | 3923164 | 4.3 |
| CUMMINS 6C 8.3L PISTON – ENGINE PART: 3923165 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE | 3923165 | 4.3 |
| CUMMINS 6C 8.3L PISTON – ENGINE PART: 3925878 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE | 3925878 | 4.26 |
| CUMMINS 6C 8.3L PISTON – ENGINE PART: 3929161 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE | 3929161 | 4.3 |
| CUMMINS 6C 8.3L PISTON – ENGINE- ANODIZED PART: 3917707 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE- ANODIZED | 3917707 | 4.3 |
| CUMMINS 6C 8.3L PISTON – ENGINE- ANODIZED PART: 3919247 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE- ANODIZED | 3919247 | 4.3 |
| CUMMINS 6C 8.3L PISTON – ENGINE- ANODIZED PART: 3925879 | PISTONS | CUMMINS | 6C 8.3L | PISTON – ENGINE- ANODIZED | 3925879 | 4.16 |
| CUMMINS 6C PISTON, 6C (3802397) PART: C3923163 | PISTONS | CUMMINS | 6C | PISTON, 6C (3802397) | C3923163 | 4.3 |
| CUMMINS 6C PISTON, 6C PART: C3923164 | PISTONS | CUMMINS | 6C | PISTON, 6C | C3923164 | 6.35 |
| CUMMINS 6C PISTON, 6C PART: C3917707 | PISTONS | CUMMINS | 6C | PISTON, 6C | C3917707 | 6.5 |
| CUMMINS 6C PISTON, 6C PART: C3929161 | PISTONS | CUMMINS | 6C | PISTON, 6C | C3929161 | 6.3 |
| CUMMINS 6C PISTON, 6C PART: C3923165 | PISTONS | CUMMINS | 6C | PISTON, 6C | C3923165 | 4.3 |
| CUMMINS 6C PISTON, 6C PART: C3919566 | PISTONS | CUMMINS | 6C | PISTON, 6C | C3919566 | 4.3 |
| CUMMINS 6C PISTON, 6C PART: C3919247 | PISTONS | CUMMINS | 6C | PISTON, 6C | C3919247 | 4.3 |
| CUMMINS 6CTA PISTON, C SERIES PART: C3925878 | PISTONS | CUMMINS | 6CTA | PISTON, C SERIES | C3925878 | 4.3 |
| CUMMINS 6B 5.9 / 6C 8.3 / 4B 3.9 SLEEVE, WEAR REAR B & C PART: C3906081 | SLEEVES | CUMMINS | 6B 5.9 / 6C 8.3 / 4B 3.9 | SLEEVE, WEAR REAR B & C | C3906081 | 0.5 |
| CUMMINS 6C SLEEVE, WEAR FRONT 6C PART: C3908277 | SLEEVES | CUMMINS | 6C | SLEEVE, WEAR FRONT 6C | C3908277 | 0.1 |
| CUMMINS 6CTA (8.3L) DAMPER – VIBRATION PART: 3925560 | VIBRATION DAMPERS | CUMMINS | 6CTA (8.3L) | DAMPER – VIBRATION | 3925560 | 15 |
| CUMMINS 6C DAMPER, 6C (3912681) PART: C3925560 | VIBRATION DAMPERS | CUMMINS | 6C | DAMPER, 6C (3912681) | C3925560 | 3 |
| CUMMINS 6CTA / ISC PUMP – WATER PART: 3286293 | WATER PUMPS | CUMMINS | 6CTA / ISC | PUMP – WATER | 3286293 | 7.82 |
| CUMMINS 6CTA / ISC PUMP – WATER PART: 4089647 | WATER PUMPS | CUMMINS | 6CTA / ISC | PUMP – WATER | 4089647 | 7.82 |
| CUMMINS 6CTA 8.3L PUMP – WATER PART: 3800974 | WATER PUMPS | CUMMINS | 6CTA 8.3L | PUMP – WATER | 3800974 | 7.15 |
| CUMMINS 6BT / 6CT PUMP, SEAWATER 6B/6C PART: C3866493 | WATER PUMPS | CUMMINS | 6BT / 6CT | PUMP, SEAWATER 6B/6C | C3866493 | 5 |
| CUMMINS 6C PUMP, WATER C SERIES LONG NOSE HARDENED PULLEY PART: C3800976 | WATER PUMPS | CUMMINS | 6C | PUMP, WATER C SERIES LONG NOSE HARDENED PULLEY | C3800976 | 9.2 |
Fitment note: Part numbers are lookup references, not proof of fitment. Confirm the engine serial number (ESN), CPL, complete model, application and the number on the removed component before ordering.
How to Turn a Table Number into a Correct Order
- Read the engine plate: record the complete model, ESN and CPL instead of submitting only “6CTA 8.3.”
- Check the removed component: photograph every stamped, cast, etched or nameplate number.
- Identify the application: construction, generator, marine and vehicle installations can use different accessory and cooling arrangements.
- Confirm the physical configuration: compare mounting, ports, voltage, rotation, dimensions and connectors as relevant.
- Resolve superseded numbers: verify that the replacement path applies to the same ESN/CPL and component package.
Need a Cummins 6CT or 6CTA 8.3 part checked?
Send the table number together with the engine plate, removed-part photos and equipment model. A cross-reference is useful only after the engine configuration is confirmed.
