Cummins 6BT, 6BTA & 6BTAA 5.9 Parts
6-cylinder B-series parts hub
Find Cummins 6BT, 6BTA and 6BTAA 5.9 parts by repair job.
Use this hub to reach engine overhaul, cylinder, fuel, turbocharger, cooling and starting parts for mechanical Cummins 5.9L B-series engines. Start with the original part number whenever possible. If it is missing, match from the engine serial number (ESN), CPL, full model suffix and application.
Identify the 5.9L B-Series Version First
Six cylinders and 5.9 liters narrow the engine family, but they do not identify every component. Injection equipment, turbocharger arrangement, cooling parts, cylinder-head configuration and accessories can change with the complete engine model, CPL and application.
| Model name seen in parts records | What it identifies | What must still be matched |
|---|---|---|
| 6B / 6B5.9 | Six-cylinder 5.9L B-series base designation | Aspiration, application, ESN/CPL and original number |
| 6BT / 6BT5.9 | Turbocharged 5.9L B-series configuration | Power rating, fuel pump, turbo tag, accessory drive and cooling arrangement |
| 6BTA / 6BTA5.9 | Turbocharged and aftercooled 5.9L configuration | Aftercooling system, rating suffix, equipment application and parts record |
| 6BTAA / 6BTAA5.9 | A 5.9L B-series designation used on higher-output and application-specific listings | Complete suffix such as C, G or GM, rating, ESN/CPL and installed configuration |
Shop Cummins 6BT Parts by Repair System
Overhaul and Rebuild
Plan a complete repair around bore condition, piston specification, bearing sizes, gasket selection and the engine CPL.
Cylinder and Valvetrain
Shop complete or bare cylinder heads, blocks, camshafts and related components by casting or replacement number.
Rotating Assembly
Crankshafts and connecting rods require exact journal, gear and application verification; a shared B-series name is not sufficient.
Mechanical Fuel System
Use the complete injection-pump code and injector number. VE, P7100 and application-specific industrial pumps are different purchasing routes.
Injection Pumps | Injectors and Nozzles
Lift and Transfer Pumps
Turbocharger and Air System
Match the turbo identification tag, complete engine model, exhaust orientation and application. HX35/HX35W wording alone is too broad.
Cooling System
Thermostat and cooling parts vary across industrial 6BT, Dodge 12-valve, ISB and QSB applications. Match the coolant-circuit part, not the 5.9L name.
Starting and Electrical
Confirm 12V or 24V, tooth count, mounting pattern, rotation and original starter number before ordering.
Complete Engine Assemblies
Browse construction, generator and marine engine categories when the project requires a complete or replacement engine rather than components.
Featured 6BT and 6BTA Parts in the Current Catalog
These 12 in-stock listings provide a cross-section of cooling, starting, cylinder, rotating, turbocharger and fuel-system parts. They are examples of the available range, not a universal service package.
Start with the Repair Scope
| Repair scope | Parts normally reviewed together | Critical matching information |
|---|---|---|
| Complete overhaul | Pistons/liners, rings, bearings, gasket sets and related wear parts | ESN, CPL, bore size, piston design and standard/undersize bearing requirement |
| Low compression or head damage | Cylinder head, valves, head gasket and head fasteners | Head casting/part number, valve configuration and engine application |
| Fuel-delivery repair | Injection pump, injectors/nozzles, lift pump and lines | Complete pump nameplate code, injector number, voltage and engine CPL |
| Low boost or turbo failure | Turbocharger, mounting gasket, oil lines and intake/exhaust connections | Turbo tag number, housing orientation, engine rating and application |
| Crankshaft or rod repair | Crankshaft, rods, main/rod bearings, thrust parts and seals | Journal measurements, gear arrangement and repair size after machining |
| Cooling-system service | Thermostat, housing/seal and related coolant components | Old number, opening-temperature marking, housing and engine generation |
| No-crank or slow-crank repair | Starter motor and related electrical connections | 12V/24V, teeth, mounting, rotation and old starter number |
Industrial 6BT, Dodge 12-Valve and ISB Are Separate Lookup Paths
Industrial 6BT / 6BTA / 6BTAA
Use the engine dataplate, CPL, full rating suffix and equipment application. Machine model alone can fail when equipment has been repowered.
Dodge/Ram 5.9L 12-Valve
Use truck model year, engine generation and the removed part. A 1998 truck needs extra care because the 12-valve/24-valve transition occurs in that model year.
ISB/QSB and 6.7L Families
Do not move a part from mechanical 6BT to ISB, QSB or B6.7 based only on a broad listing. Require an explicit cross-reference for the exact engine.
Cummins 6B, 6BT, 6BTA & 6BTAA 5.9L Parts Reference
Use this table for the mechanical Cummins B-series 5.9L family. Rows that also list a 4B, ISB or QSB application remain here only when the source record explicitly includes a 6B-series model.
| Product Description | Product Category | Manufacturer | Model | Product Subset | Part Number | Weight |
|---|---|---|---|---|---|---|
| CUMMINS 6BT (5.9L) AFTERCOOLER PART: 3910282 | AFTERCOOLERS | CUMMINS | 6BT (5.9L) | AFTERCOOLER | 3910282 | 1 |
| CUMMINS 6BT (5.9L) AFTERCOOLER PART: 3919806 | AFTERCOOLERS | CUMMINS | 6BT (5.9L) | AFTERCOOLER | 3919806 | 1 |
| CUMMINS 6BT COMPRESSOR – AIR PART: 3960069 | AIR COMPRESSORS | CUMMINS | 6BT | COMPRESSOR – AIR | 3960069 | 228 |
| CUMMINS 6B BRG, MAIN SET STD 6B PART: C3802070 | BEARINGS | CUMMINS | 6B | BRG, MAIN SET STD 6B | C3802070 | 2.87 |
| CUMMINS 6B BRG, MAIN SET 0.75MM 6B PART: C3802073 | BEARINGS | CUMMINS | 6B | BRG, MAIN SET 0.75MM 6B | C3802073 | 2.85 |
| CUMMINS 6B BRG, MAIN SET 0.50MM 6B PART: C3802072 | BEARINGS | CUMMINS | 6B | BRG, MAIN SET 0.50MM 6B | C3802072 | 2.75 |
| CUMMINS 6B BRG, MAIN SET 0.25MM 6B PART: C3802071 | BEARINGS | CUMMINS | 6B | BRG, MAIN SET 0.25MM 6B | C3802071 | 2.87 |
| CUMMINS 6BTA CAMSHAFT PART: 3929042 | CAMSHAFTS | CUMMINS | 6BTA | CAMSHAFT | 3929042 | 15.8 |
| CUMMINS 6BT CAMSHAFT, 6B (3929042) PART: C3914639 | CAMSHAFTS | CUMMINS | 6BT | CAMSHAFT, 6B (3929042) | C3914639 | 18.5 |
| CUMMINS 6B CON ROD, FRACTURE SPLIT, B SERIES PART: C4943979 | CONNECTING RODS | CUMMINS | 6B | CON ROD, FRACTURE SPLIT, B SERIES | C4943979 | 5 |
| CUMMINS 6BT CRANKSHAFT – BARE PART: 3907804 | CRANKSHAFTS | CUMMINS | 6BT | CRANKSHAFT – BARE | 3907804 | 175 |
| CUMMINS 6BT CRANKSHAFT 6B PART: C3907804 | CRANKSHAFTS | CUMMINS | 6BT | CRANKSHAFT 6B | C3907804 | 128 |
| CUMMINS 6BT HEAD – CYLINDER – BARE PART: 3917287 | CYLINDER HEADS | CUMMINS | 6BT | HEAD – CYLINDER – BARE | 3917287 | 140 |
| CUMMINS 6BT (5.9L) HEAD – CYLINDER PART: 3934730 | CYLINDER HEADS | CUMMINS | 6BT (5.9L) | HEAD – CYLINDER | 3934730 | 126 |
| CUMMINS 6BT CYLINDER HEAD, W/VALVES 6B / NON-AFTERCOOLED PART: C3913381 | CYLINDER HEADS | CUMMINS | 6BT | CYLINDER HEAD, W/VALVES 6B / NON-AFTERCOOLED | C3913381 | 137 |
| CUMMINS 6BTA MANIFOLD – EXHAUST PART: 4020066 | EXHAUST MANIFOLD | CUMMINS | 6BTA | MANIFOLD – EXHAUST | 4020066 | 70 |
| CUMMINS 6B FLYWHEEL PART: 3908574 | FLYWHEELS | CUMMINS | 6B | FLYWHEEL | 3908574 | 45 |
| CUMMINS 6B FLYWHEEL PART: 3921263 | FLYWHEELS | CUMMINS | 6B | FLYWHEEL | 3921263 | 68 |
| CUMMINS 6BT FLYWHEEL PART: 3910370 | FLYWHEELS | CUMMINS | 6BT | FLYWHEEL | 3910370 | 66 |
| CUMMINS 6BT FLYWHEEL PART: 3910371 | FLYWHEELS | CUMMINS | 6BT | FLYWHEEL | 3910371 | 67 |
| CUMMINS 6B MANIFOLD – FUEL PART: 3909696 | FUEL MANIFOLD | CUMMINS | 6B | MANIFOLD – FUEL | 3909696 | 0.03 |
| CUMMINS 6BT GASKET – CYLINDER HEAD PART: 3958645 | GASKET SETS (CYLINDER HEAD) | CUMMINS | 6BT | GASKET – CYLINDER HEAD | 3958645 | 1 |
| CUMMINS 6B 5.9 GASKET, HEAD 6B PART: C3921394 | GASKET SETS (CYLINDER HEAD) | CUMMINS | 6B 5.9 | GASKET, HEAD 6B | C3921394 | 1.8 |
| CUMMINS 6B 5.9 GASKET, CYLINDER HEAD, ISB PART: C3977063 | GASKET SETS (CYLINDER HEAD) | CUMMINS | 6B 5.9 | GASKET, CYLINDER HEAD, ISB | C3977063 | 1.3 |
| CUMMINS 6B GASKET, BOTTOM SET 6B PART: C3802376 | GASKET SETS (LOWER ENGINE) | CUMMINS | 6B | GASKET, BOTTOM SET 6B | C3802376 | 5 |
| CUMMINS 6B 5.9 GASKET SET – UPPER ENG – .25MM PART: 3802364 | GASKET SETS (UPPER ENGINE) | CUMMINS | 6B 5.9 | GASKET SET – UPPER ENG – .25MM | 3802364 | 2.31 |
| CUMMINS 6B 5.9 GASKET SET – UPPER ENG – .25MM PART: 4089650 | GASKET SETS (UPPER ENGINE) | CUMMINS | 6B 5.9 | GASKET SET – UPPER ENG – .25MM | 4089650 | 2.5 |
| CUMMINS 6B 5.9 GASKET SET – UPPER ENGINE PART: 3804897 | GASKET SETS (UPPER ENGINE) | CUMMINS | 6B 5.9 | GASKET SET – UPPER ENGINE | 3804897 | 6 |
| CUMMINS 6B 5.9 / QSB 5.9 GASKET SET – UPPER ENGINE PART: 4089649 | GASKET SETS (UPPER ENGINE) | CUMMINS | 6B 5.9 / QSB 5.9 | GASKET SET – UPPER ENGINE | 4089649 | 2.31 |
| CUMMINS 6B GASKET, TOP SET 6B PART: C3802363 | GASKET SETS (UPPER ENGINE) | CUMMINS | 6B | GASKET, TOP SET 6B | C3802363 | 5 |
| CUMMINS 6BT 5.9 GASKET, TOP SET 6BT 5.9 QSB PART: C4089649 | GASKET SETS (UPPER ENGINE) | CUMMINS | 6BT 5.9 | GASKET, TOP SET 6BT 5.9 QSB | C4089649 | 5.1 |
| CUMMINS 6B 5.9 / 4B 3.9 GEAR, CRANKSHAFT B SERIES PART: C3901258 | GEARS | CUMMINS | 6B 5.9 / 4B 3.9 | GEAR, CRANKSHAFT B SERIES | C3901258 | 1.95 |
| CUMMINS 6B HOUSING – FLYWHEEL PART: 3931713 | HOUSINGS | CUMMINS | 6B | HOUSING – FLYWHEEL | 3931713 | 44 |
| CUMMINS 6BT 5.9L INJECTOR PART: 3802327 | INJECTORS | CUMMINS | 6BT 5.9L | INJECTOR | 3802327 | 0.5 |
| CUMMINS 6BTA KIT, GASKET LOWER, 6 ISB PART: C3800487 | INJECTORS | CUMMINS | 6BTA | KIT, GASKET LOWER, 6 ISB | C3800487 | 4 |
| CUMMINS 6B INFRAME KIT, ISB5.9 PART: IF3800781-6B | KITS (INFRAME/OVERHAUL) | CUMMINS | 6B | INFRAME KIT, ISB5.9 | IF3800781-6B | 45 |
| CUMMINS 6B INFRAME KIT, ISB5.9 PART: IF3800784-6B | KITS (INFRAME/OVERHAUL) | CUMMINS | 6B | INFRAME KIT, ISB5.9 | IF3800784-6B | 45 |
| CUMMINS 6B INFRAME KIT, ISB5.9 PART: IF3800785-6B | KITS (INFRAME/OVERHAUL) | CUMMINS | 6B | INFRAME KIT, ISB5.9 | IF3800785-6B | 45 |
| CUMMINS 6B OVERHAUL KIT – ISB5.9 PART: OH3800781-6B | KITS (INFRAME/OVERHAUL) | CUMMINS | 6B | OVERHAUL KIT – ISB5.9 | OH3800781-6B | 45 |
| CUMMINS 6B OVERHAUL KIT – ISB5.9 PART: OH3800784-6B | KITS (INFRAME/OVERHAUL) | CUMMINS | 6B | OVERHAUL KIT – ISB5.9 | OH3800784-6B | 45 |
| CUMMINS 6B OVERHAUL KIT – ISB5.9 PART: OH3800785-6B | KITS (INFRAME/OVERHAUL) | CUMMINS | 6B | OVERHAUL KIT – ISB5.9 | OH3800785-6B | 45 |
| CUMMINS 6B COMPLETE OVERHAUL KIT, 6B, PART: OH3802160-6B.010 | KITS (INFRAME/OVERHAUL) | CUMMINS | 6B | COMPLETE OVERHAUL KIT, 6B | OH3802160-6B.010 | 42 |
| CUMMINS 6B KIT – PISTON PART: 3802757 | KITS (PISTON) | CUMMINS | 6B | KIT – PISTON | 3802757 | 2.7 |
| CUMMINS 6BTA KIT, PISTON, ISB, STD PART: C3800781 | KITS (PISTON) | CUMMINS | 6BTA | KIT, PISTON, ISB, STD | C3800781 | 2.95 |
| CUMMINS 6BTA KIT, PISTON, ISB, STD PART: C3800838 | KITS (PISTON) | CUMMINS | 6BTA | KIT, PISTON, ISB, STD | C3800838 | 2.95 |
| CUMMINS 6BTA KIT, PISTON, ISB, 1.00mm PART: C3800842 | KITS (PISTON) | CUMMINS | 6BTA | KIT, PISTON, ISB, 1.00mm | C3800842 | 2.95 |
| CUMMINS 6BTA KIT, PISTON, ISB, 1.00 mm PART: C3800785 | KITS (PISTON) | CUMMINS | 6BTA | KIT, PISTON, ISB, 1.00 mm | C3800785 | 2.95 |
| CUMMINS 6BTA KIT, PISTON, ISB, 0.50mm PART: C3800841 | KITS (PISTON) | CUMMINS | 6BTA | KIT, PISTON, ISB, 0.50mm | C3800841 | 2.95 |
| CUMMINS 6BTA KIT, PISTON, ISB, 0.50 mm PART: C3800784 | KITS (PISTON) | CUMMINS | 6BTA | KIT, PISTON, ISB, 0.50 mm | C3800784 | 2.95 |
| CUMMINS 6B COOLER, OIL 7 PLATE 6B PART: C3957544 | OIL COOLERS | CUMMINS | 6B | COOLER, OIL 7 PLATE 6B | C3957544 | 6.2 |
| CUMMINS 6B COOLER, OIL 7 PLATE 6B PART: C3921558 | OIL COOLERS | CUMMINS | 6B | COOLER, OIL 7 PLATE 6B | C3921558 | 5.15 |
| CUMMINS 6BT PAN – OIL PART: 3915703 | OIL PANS | CUMMINS | 6BT | PAN – OIL | 3915703 | 12 |
| CUMMINS 6BTA | ISB SERIES PUMP – OIL PART: 4939586 | OIL PUMPS | CUMMINS | 6BTA | ISB SERIES | PUMP – OIL | 4939586 | 5 |
| CUMMINS 6B PUMP, OIL 6B (3906414) PART: C3926203 | OIL PUMPS | CUMMINS | 6B | PUMP, OIL 6B (3906414) | C3926203 | 5 |
| CUMMINS 6BTA / 6BT PUMP, OIL, ISB & QSB PART: C4939587 | OIL PUMPS | CUMMINS | 6BTA / 6BT | PUMP, OIL, ISB & QSB | C4939587 | 3.76 |
| CUMMINS 6B 5.9 RING SET, ISB, STD PART: C3804990 | RINGS | CUMMINS | 6B 5.9 | RING SET, ISB, STD | C3804990 | 0.3 |
| CUMMINS 6B 5.9 RING SET, ISB, 1.00mm PART: C3806203 | RINGS | CUMMINS | 6B 5.9 | RING SET, ISB, 1.00mm | C3806203 | 0.3 |
| CUMMINS 6B 5.9 RING SET, ISB, 0.50mm PART: C3806201 | RINGS | CUMMINS | 6B 5.9 | RING SET, ISB, 0.50mm | C3806201 | 0.3 |
| 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 6BT / 4BT PUMP, WATER, QSB4.5, 6.7 PART: C3800984 | WATER PUMPS | CUMMINS | 6BT / 4BT | PUMP, WATER, QSB4.5, 6.7 | C3800984 | 6.05 |
| CUMMINS 6BT / 6CT PUMP, SEAWATER 6B/6C PART: C3866493 | WATER PUMPS | CUMMINS | 6BT / 6CT | PUMP, SEAWATER 6B/6C | C3866493 | 5 |
| CUMMINS 6BTA / 4BT PUMP, WATER, ISB PART: C3286278 | WATER PUMPS | CUMMINS | 6BTA / 4BT | PUMP, WATER, ISB | C3286278 | 6.05 |
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.
Information That Produces a Useful 6BT Parts Quote
A clear request lets the parts team compare the correct catalog record instead of guessing from “Cummins 5.9.” Include:
- Engine identification: typed ESN and CPL plus a readable dataplate photo.
- Complete model: 6B, 6BT, 6BTA or 6BTAA with the rating suffix where present.
- Original part evidence: every stamped, cast, etched or nameplate number and photos from multiple angles.
- Application: machine, generator set, marine unit, truck or stationary-power model.
- Configuration details: voltage, dimensions, repair size, pump/turbo code or temperature marking as relevant.
- Quantity and destination: needed for availability, packaging and freight planning.
Need a specific Cummins 6BT part?
Send the number and engine details for a fitment check, or enter the relevant component category above when you already know the part family.
Related 5.9L resource: Cummins 5.9 Thermostat: 12V vs 24V vs 6.7L
