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Cummins 6BT Crankshaft (Primary) for 5.9L engines, OEM 3907804 (Secondary). Forged steel construction for durability, suited to marine, industrial, and on-road applications. China Cummins crankshaft manufacturer supplying wholesale replacement for professional rebuilds.
Engineered for Cummins 6B/6BT/6BTA 5.9L platforms, this crankshaft ensures reliable rotation, reduced vibration, and long service life. Ideal for distributors, repair facilities, and fleet operators needing exact-fit aftermarket replacements.
| Specification | Details |
|---|---|
| Engine Fitment | Cummins 6B / 6BT / 6BTA 5.9L |
| OEM Part Numbers | 3907804 (primary) |
| Material | Forged steel |
| Condition | New Aftermarket |
| Weight | ≈49.5 kg |
| Key Features | • High-strength forging • Seven main bearings support • Ready for professional overhauls |
| Equipment Make | Model | Years/Use | Replaces OEM |
|---|---|---|---|
| Cummins | 6B/6BT/6BTA (5.9L) | 1989–1998 typical | 3907804 |
| Industrial | Generators / Pumps | 5.9L applications | 3907804 |
| Marine | 6BT Marine | Various builds | 3907804 |
| Construction | Loaders / Excavators | 5.9L installs | 3907804 |
We also supply Cummins 4BT, 6CT/6CTA, M11, NT855, K19/KTA19 crankshafts for wholesale and export.
| Cummins Engine Model | Core Displacement (L) | Serial | Associated Models (for Cross-Reference) | Key Applications |
|---|---|---|---|---|
| B3.3 | 3.3 | B / ISB / QSB Series (Light & Mid-Range) | B3.3 (M16/18) | Skid Steer, Excavator, Forklift, Gen-Set |
| 4BT/3.9 | 3.9 | B / ISB / QSB Series (Light & Mid-Range) | 4BT3.9, 4BTA | Diesel Conversion Swap, Jeep Swap, Ford Van, Step Van |
| ISB4.5 / B4.5 | 4.5 | B / ISB / QSB Series (Light & Mid-Range) | 4ISBE, 4ISDE, ISB 4.5L Euro V | Medium-Duty Truck, Bus, Delivery Vehicle |
| 4H | 4.0 | H Series (Mid-Range) | 4H / 4HJ / 4HT | John Deere Excavators (200D/210D), Caterpillar Skid Steers (226B/232B), Komatsu Forklifts (FG20T-25), |
| 6BT / B5.9 | 5.9 | B / ISB / QSB Series (Light & Mid-Range) | 6BT5.9, 12 Valve (12V), 3965010 | Dodge Ram 1500/2500/3500 (1989-2002), Agricultural Tractor |
| ISB6.7 / QSB6.7 | 6.7 | B / ISB / QSB Series (Light & Mid-Range) | 6ISBE, 6ISDE, ISB 6.7L Euro V | Dodge Ram 2500/3500 (2007.5+), School Bus, Fire Truck |
| 6CT / ISC 8.3 | 8.3 | C / ISC / QSC Series (Mid-Range Heavy-Duty) | 6CTA, C8.3, 6D114 | Freightliner, Fire Apparatus, Motorhome (RV), Dozer |
| ISL8.9 / QSL9 | 8.9 | L / ISL / QSL Series (Heavy-Duty) | ISL, ISB 8.9L | Heavy-Duty Bus, RV Coach, Crane, Volvo/Kenworth Truck |
| M11 / ISM / QSM11 | 10.8 | M / ISM / QSM Series | - | Road Truck, Semi-Truck, Haul Truck, Gen-Set |
| NT855 | 14 | N / NT Series (Classic Mechanical) | N14, NH220 (Earlier), D85 | Peterbilt, Kenworth, Classic Truck, Heavy Equipment |
| K19 / QSK19 | 19 | K / QSK Series (High Horsepower) | KTA19, KT19 | Mining, Marine Propulsion, Drill Rig, Power Generation |
| K38 / QSK38 | 38 | K / QSK Series (High Horsepower) | KTA38, KAT38, GTA38 | Large Mining Excavator, Off-Highway, Gen-Set |
| ISF2.8 / ISF3.8 | 2.8 / 3.8 | F / ISF Series (Light Commercial) | - | Foton, GAZelle, Light Commercial Van |
| A2300 | 2.3 | A Series (Small Utility) | - | Small Gen-Set, Utility Equipment |
| ISL9 / QSL9 (6L/9.3L) | 8.9 / 9.3 | L / ISL / QSL Series | L9, ISL 9.3L Euro V/VI | Dongfeng Trucks (DFL4251), Shantui Bulldozers (SD32D), |
| NH220 | 14 | N / NT Series (Classic Mechanical) | NT855, N14, NH220 | Peterbilt 359, Kenworth W900, Classic Truck, Heavy Equipment, Vintage Tractor |
Consistent quality control and knowledgeable support for rebuilders and fleets seeking reliable 5.9L replacements.
For wholesale inquiries or technical support, please contact us: Email [email protected] or WhatsApp +86 13889277673. Our sales team responds promptly to distributor and fleet requests.
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For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business
