221-9360 crankshaft for CAT C15 15.2L engine. Fits 385C excavator, D8T dozer, Peterbilt 379. 625HP-rated forged steel. Wholesale distribution ready
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The Ruich Value 221-9360 is a heavy-duty forged steel crankshaft engineered for the Caterpillar C15 15.2L ACERT engine. Rated for up to 625HP, it serves as a high-precision rotating assembly for CAT 385C excavators, D8T dozers, and Peterbilt 379 trucks. Ready for wholesale distribution.
The Caterpillar C15 15.2L diesel engine is known as the “King of the Road,” delivering relentless power for iconic heavy-haulers like the Peterbilt 379 and massive earthmovers such as the 385C. At the mechanical center of this 625HP-rated platform is the Caterpillar C15 crankshaft. Ruich Value supplies the OEM-spec 221-9360 rotating assembly, forged from high-tensile alloy steel to withstand the extreme cylinder pressures and torque spikes characteristic of the twin-turbo ACERT system in 385C excavator crankshaft operations.
Continuous heavy-duty operation exposes bottom-end components to torsional vibration damper failure. If the harmonic balancer loses its efficacy, the resulting crankshaft resonance leads to journal fatigue cracking and eventual bearing spin. Our heavy duty forged crankshaft addresses these failure modes through precision fillet induction hardening on all main and rod journals. This metallurgy ensures the Peterbilt 379 crankshaft maintains the exact oil film thickness and structural rigidity required for long-distance highway duty and extreme mining environments.
Ruich Value is a leading partner in the wholesale distribution of Caterpillar engine components. Every 221-9360 unit, which cross-references to IV-1606 and 337-0201, is CNC micro-polished to an Ra 0.2 finish and dynamically balanced. Whether maintaining a D8T dozer crankshaft in a remote quarry or performing a high-standard engine rebuild for a Class 8 truck, our factory-direct inventory ensures your C15 powerplant achieves its maximum design life with Caterpillar’s hallmark durability.
| Parameter | Technical Value |
|---|---|
| Primary OEM Number | 221-9360 / 2219360 |
| Main Journal Diameter | 120.65 mm (4.750 in) |
| Rod Journal Diameter | 90.00 mm (3.543 in) |
| Engine Stroke | 171.45 mm (6.750 in) |
| Engine Compatibility | CAT C15 / C15 ACERT / 3406E |
| Material Grade | Heavy Duty Forged Steel |
| Cross-Reference | IV-1606 / 337-0201 |
Our heavy-duty rotating assembly catalog covers the complete high-horsepower Caterpillar family. Explore our complete Caterpillar Engine Parts Catalog for matching cylinder heads, main bearing sets, and master overhaul kits.
| Engine Model | OEM Ref. Number | Material Spec | Primary Application (Famous Models) |
|---|---|---|---|
| S4K | 4W-3989 5I-7777 | Casting / Forging | Excavators: CAT E110B, E120B Loaders: CAT 910E |
| S4KT | 5I-7844 135-2419 | Forging (Rec.) | Excavators: CAT 312, 312B, 312C |
| S6K | 5I-7670 (Mitsu: 34320-10010) | Casting / Forging | Excavators: CAT E200B, 320, 320L Graders: 120B |
| S6KT / 3066 | 5I-7671 125-3005 205-0672 | Forging | Excavators: CAT 320B, 320C, 323C (The "Gold Standard" for 320 series) |
| C6.4 / 320D | 261-1544 294-1749 | Forging | Excavators: CAT 320D, 320D L, 323D |
| 3306 | 4N-7693 2W-7458 | Forging (OEM) | Dozers: CAT D6C, D6D, D7G Graders: 12G, 140G Trucks: Many International/Freightliner trucks |
| 3304 | 4N-7692 | Forging | CAT D4E, 951C, 955L, 120G (Same family as 3306) |
| 3204 | 1W-9002 / 7N-1300 | Casting/Forging | CAT D3, 931, 943, 953 (Smaller Engine) |
| C13 | 313-3997 243-2895 | Forging | Trucks: Kenworth T800, Peterbilt 379 Excavators: CAT 345C, 349D |
| C7 | 271-5658 224-3255 | Forging | Trucks: Ford F650/F750, GMC TopKick Loaders: CAT 950H, 962H Excavators: 324D, 325D |
| C9 | 282-7958 160-8199 212-8566 | Forging | Excavators: CAT 330C, 330D, 336D Dozers: CAT D6R, D6T |
| C15 | 221-9360 337-0201 IV-1606 | Forging | Trucks: King of the Road (Peterbilt 389, Kenworth W900) Dozers: CAT D8T Excavators: 365C, 385C |
| C18 | 222-3236 260-0677 | Forging | Generators: CAT C18 Gensets Loaders: CAT 988H Marine: CAT C18 Marine Propulsion |
| C4.2 | 238-3449 (Perkins 1104D base) | Casting / Forging | Excavators: CAT 312D, 314D, 315D |
| 3406E | 101-3228 4P-9055 | Forging | Trucks: 1990s Era Heavy Trucks Dozers: CAT D8R, D9R Loaders: 980G |
| Make | Machine Model | Year Range | Engine | Application |
|---|---|---|---|---|
| Caterpillar | 385C / 390D Excavators | 2004–2014 | C15 ACERT | Heavy Excavator |
| Caterpillar | D8T / D8R Dozers | 2004–2016 | C15 ACERT | Crawler Dozer |
| Peterbilt | 379 / 389 Models | 1987–2007 | Caterpillar C15 | Class 8 Truck |
| Kenworth | W900 / T800 Models | 1990–2007 | Caterpillar C15 | Heavy Haul Truck |
The 15.2L engine generates immense torsional pulses. The viscous vibration damper has a limited operational life (approx. 500,000 miles). If the internal fluid thickens, it can no longer absorb these pulses, leading to journal snapping or fatigue. Replacing the damper whenever installing a new 221-9360 crankshaft is critical preventative maintenance to protect your rotating assembly investment.
Generally, yes. The C15 evolved from the 3406E 5EK/6NZ architecture, and the 221-9360 is the heavy-duty forged version that supersedes many early 3406E numbers. However, you must verify the engine serial number prefix, as later ACERT blocks may have different snout or sensor gear arrangements. We recommend verifying fitment via your engine arrangement (AR) number before installation.
Fatigue failure is usually initiated by oil film breakdown or torsional resonance. If oil pressure drops due to pump wear, the bearing shell can seize to the journal, causing it to spin in the block. Our precision-ground journals ensure exact oil clearances, while induction hardening provides the surface toughness needed to resist metal-on-metal damage during high-load startup cycles.
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Custom crankshaft manufacturing available based on samples or drawings.
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