The 3029341 Cummins NH220 crankshaft is forged from premium steel for “Small Cam” NT855 engines. Its high-strength design resists fatigue fractures and ensures long service life.
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The Cummins NH220 / NT855 crankshaft (OEM: 3029341) is a Forged Steel component designed for “Small Cam” engines.
It offers superior resistance to fatigue compared to cast iron alternatives and fits vintage equipment including Kenworth trucks and Euclid dumpers.
In stock for global export.
Unlike cheaper cast alternatives that are prone to snapping under high torque, our forged crankshafts undergo rigorous heat treatment and micro-polishing. This ensures they can withstand the punishing environment of heavy-duty industrial use while maintaining precise oil film clearance to protect your bearings. Restore your legendary Cummins engine with a crankshaft that matches its reputation for toughness.
| Specification | Value |
|---|---|
| Product Type | Crankshaft |
| Engine Model | Cummins NH220 / NT855 |
| Engine Version | Small Cam (Pre-1976 approx.) |
| Material | Forged Steel (42CrMo) |
| Main Journal | Standard OEM Size |
| Rod Journal | Standard OEM Size |
| OEM Reference | 3029341, 3608833, 3096362 |
| Cross Reference | Small Cam Crank, NH220 Shaft |
| Process | Forged & Induction Hardened |
| Engine Model | Application Field | Typical Equipment Brands & Models |
|---|---|---|
| Cummins NH220 | Trucking (Vintage) | Classic Kenworth, Peterbilt, International Harvester Trucks |
| Cummins NT855 (Small Cam) | Mining / Construction | Euclid Dump Trucks, Manitowoc Cranes, Older Dozers |
| Cummins NTC855 | Power Generation | Standby Gensets, Marine Auxiliary Power |
Ruich Value supplies a dedicated range of Cummins engine parts, including new aftermarket and remanufactured replacements. Our coverage includes popular engine families such as the 6BT/6BTA, 4BT, ISB, ISX, and NT855 series. For a complete catalog of our Cummins crankshafts, please contact our sales team.
| 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 |
While both fit the 855 block architecture, Small Cam engines (like the NH220 and early NT855) use specific timing gears and vibration dampers. The 3029341 crankshaft is designed specifically for the Small Cam version. Big Cam engines typically use different part numbers (e.g., 3608833 supersessions) with different nose configurations. Always check your CPL (Control Parts List) number before ordering.
The NH220/855 engines are high-torque workhorses. Forged steel provides significantly higher tensile strength and fatigue resistance compared to cast iron. This is critical for preventing catastrophic breakage under heavy loads, such as in mining dump trucks or marine applications.
The crankshaft is sold as a bare unit (including oil gallery plugs). Main bearings and connecting rod bearings are sold separately. We recommend using Tri-Metal heavy-duty bearings when installing a new forged crankshaft to ensure maximum longevity.
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