4N-7692 crankshaft for CAT 3304 7.0L engine. Fits D4E dozer, 951C loader, 120G grader. Forged steel with induction-hardened journals. Stock ready for shipment
Product Categories:
Product Tags:
Send us a message
The Ruich Value 4N-7692 rotating assembly is an OEM-spec forged steel crankshaft engineered for the Caterpillar 3304 4-cylinder engine. Featuring induction-hardened journals, it provides a direct-fit replacement for CAT D4E, 951C, and 120G equipment. In stock and ready for global workshop supply.
When executing an excavator engine rebuild on classic earthmoving machinery, technicians demand metallurgy capable of surviving decades of intense mechanical shock. The OEM 4N-7692 rotating assembly is the core foundational component for legendary equipment, including primary CAT D4E crankshaft applications. Ruich Value supplies this precision forged steel crankshaft manufactured to uphold Caterpillar’s rigid QDR (Quality, Durability, and Reliability) standards. Our 3304 crankshaft provides the immense torsional rigidity necessary to keep aging dozer and grader fleets operational in the most severe construction and forestry environments.
Operators of vintage equipment frequently battle severe bottom-end failures. Excessive crankshaft end-play due to worn thrust bearings is prevalent in older hydraulic systems, while continuous heavy grading or pushing induces fatigue cracking around the journal fillets. Our forged steel replacements directly combat these issues through advanced induction hardened journals. This specific thermal process creates a highly wear-resistant surface layer that resists scoring and maintains optimal hydrodynamic oil film clearances, dramatically extending the lifespan of your 3304 engine block.
As a leading supplier of wholesale Caterpillar crankshaft solutions, we prioritize exact dimensional accuracy and robust legacy support. This unit perfectly replaces multiple supersessions, including 2W-7457 and 7N-3406, providing a versatile solution. Whether you are servicing a D4E dozer crankshaft, a 951C loader crankshaft, or a 120G grader crankshaft, our factory-direct distribution guarantees you receive genuine OEM-quality components to restore peak torque output without incurring exorbitant dealer markups.
| Parameter | Technical Detail |
|---|---|
| Primary OEM Number | 4N-7692 / 4N7692 |
| Cross-Reference | 2W-7457, 7N-3406 |
| Engine Compatibility | Caterpillar 3304 / 3304T (4-Cylinder, 7.0L) |
| Main Journal Diameter | 88.90 mm (3.500 in) |
| Rod Journal Diameter | 76.20 mm (3.000 in) |
| Engine Stroke | 152.40 mm (6.000 in) |
| Material Grade | Forged High-Strength Alloy Steel |
| Process Technology | Fillet & Journal Induction Hardening |
Explore our comprehensive inventory of Caterpillar rotating assemblies, spanning from classic 3300-series blocks to modern ACERT engines. Explore our complete Caterpillar Engine Parts Catalog for matching cylinder heads, camshafts, 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 | D4E / D4D | 1977–1984 (Single Source) | CAT 3304 | Crawler Dozer |
| Caterpillar | 951C / 955L | 1970–1981 (Single Source) | CAT 3304 | Track Loader |
| Caterpillar | 120G | 1974–1996 (Single Source) | CAT 3304 | Motor Grader |
| Caterpillar | 941 / 941B | 1968–1981 (Single Source) | CAT 3304 | Traxcavator |
Answer: No, they are not interchangeable. While the Caterpillar 3304 crankshaft engine is essentially a 4-cylinder version of the 6-cylinder 3306—sharing the exact same bore (120.65mm) and stroke (152.4mm)—the crankshafts themselves differ in length and the number of rod/main journals. The 4N-7692 is exclusively for the 4-cylinder 3304 block.
Diagnosis: Thrust washer failure due to end-play neglect is a highly destructive issue. Excessive crankshaft end-play allows the shaft to shift horizontally, which can obliterate the main bearings and score the engine block’s thrust surfaces. Solution: Before finalizing the engine assembly, place a dial indicator on the nose of the crank. Push the shaft fully rearward, zero the gauge, and pry it fully forward. The clearance must fall within the manufacturer’s specified limits (typically 0.15mm – 0.50mm). Always use new thrust washers.
Diagnosis: Fatigue cracking under heavy load usually begins at the journal fillets (the critical curved transition between the journal and the crank web). This area absorbs the highest stress concentration during intense pushing or grading cycles. Solution: Our 4N-7692 shafts utilize localized induction hardening specifically in these fillet areas. This advanced heat treatment induces compressive stress on the steel surface, dramatically increasing the metal’s resistance to microscopic fatigue fractures.
📱 WhatsApp: +86 13889277673
📧 Email: [email protected]
⚡ Fast response | Factory direct | Global shipping | ISO 9001 Certified
Custom crankshaft manufacturing available based on samples or drawings. OEM/ODM capabilities.
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business