CATERPILLAR Cat Crankshaft 468-5119

( Manufacturer Part Number: 4685119 ), ( Part Type: Crankshaft ), ( Oe/oem Part Number: 4685119 468-5119 )

Review CATERPILLAR Original Cat Crankshaft Unused

The **Caterpillar 4685119 (CAT 468-51119) Crankshaft** is a precision-engineered, heavy-duty component designed exclusively for Caterpillar s robust diesel engine lineup, specifically tailored for applications requiring exceptional reliability, durability, and performance under extreme operating conditions. Crafted from high-grade alloy steel, this crankshaft undergoes a rigorous forging process to ensure uniform grain structure and optimal mechanical properties, including superior fatigue resistance and resistance to torsional stress. The surface is meticulously ground and polished to exacting tolerances, minimizing friction and maximizing efficiency, while the journal and main bearing surfaces are hardened through a proprietary heat-treatment process to withstand the relentless demands of continuous, high-load operation. This crankshaft features a **five-main-bearing design**, with oversized, reinforced journals engineered to distribute stress evenly across the crankshaft s critical load-bearing points, reducing the risk of catastrophic failure in demanding environments such as mining, construction, marine, or industrial power generation. The counterweights are dynamically balanced to minimize vibration, enhancing both engine longevity and operator comfort, while the oil passages are strategically placed to ensure consistent lubrication, preventing premature wear in high-temperature and high-pressure scenarios. Compatible with Caterpillar s **3516, 3520, and 3528B** engine families, this crankshaft is a direct-fit replacement, ensuring seamless integration with existing engine assemblies without the need for modifications. Whether deployed in stationary power plants, mobile equipment, or marine propulsion systems, the **CAT 4685119 crankshaft** exemplifies Caterpillar s commitment to engineering resilience delivering uncompromising performance, extended service intervals, and the peace of mind that comes with OEM-grade quality.

### Pros and Cons of Buying a Caterpillar 4685119 (CAT 468-5119) Crankshaft

1. **Proven Reliability** The Caterpillar 3406 or 3408 engine (commonly associated with this crankshaft) is a well-established design with decades of field-proven performance. It is widely used in heavy-duty applications, including generators, marine, and industrial equipment, which means a strong aftermarket support network exists.

2. **High Durability** The crankshaft itself is forged from high-quality steel, designed to withstand extreme loads, high torque, and prolonged operation under harsh conditions. This makes it a robust choice for demanding applications.

3. **Compatibility with Aftermarket Parts** Due to its widespread use, finding replacement components, seals, bearings, and other parts is relatively straightforward. This reduces downtime and repair costs in the long run.

4. **Long-Term Availability** While newer engines may have updated designs, the 468-5119 crankshaft remains in production or easily sourced from authorized dealers and third-party suppliers. This ensures you won t be stuck with obsolete parts.

5. **Cost-Effective for Retrofits** If you re working with an older engine that still performs well but requires a crankshaft replacement, this part can be a cost-effective upgrade rather than a full engine swap.

6. **Technical Documentation and Support** Caterpillar provides extensive technical manuals, service bulletins, and support for older models. This helps with troubleshooting, maintenance, and ensuring proper installation.

7. **Resale Value** Engines with this crankshaft (such as the 3406 or 3408) retain some resale value, especially in secondary markets where used heavy-duty engines are still in demand.

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1. **Age of the Design** While the 468-5119 crankshaft is reliable, it is based on an older engine architecture (likely from the 1980s or earlier). Newer engines (e.g., C13, C15, or even updated 3500-series models) incorporate modern advancements like improved fuel injection, emissions compliance, and fuel efficiency. Retrofitting an older crankshaft may limit these benefits.

2. **Emissions Compliance** If you re running the engine in regulated environments (e.g., stationary power generation, marine, or on-road applications), older crankshafts may not be compatible with modern emissions standards (e.g., Tier 4, EPA, or IMO regulations). Retrofitting may require additional aftermarket modifications or a full engine upgrade.

3. **Potential for Wear** Older crankshafts, even if well-maintained, may have accumulated wear over time. If the engine has high mileage or was operated under poor conditions, the crankshaft (or associated components like bearings) may require additional inspection or replacement sooner than expected.

4. **Limited Performance Gains** If you re looking to significantly increase power or efficiency, an older crankshaft may not offer the same performance upgrades as a modern engine. Newer designs often feature lighter materials, optimized balancing, and improved lubrication systems for better output.

5. **Higher Maintenance Requirements** Older engines tend to require more frequent maintenance, such as valve adjustments, timing belt replacements, and cooling system checks. The crankshaft itself may also need more rigorous inspection for cracks or imbalance compared to newer designs.

6. **Potential for Obsolete Parts** While the crankshaft itself is still available, some associated components (e.g., specific seals, gaskets, or sensors) may become harder to source as the engine model ages. This could lead to compatibility issues or higher costs for less common parts.

7. **Resale Depreciation** If you plan to sell the engine later, a retrofitted older crankshaft may reduce its resale value compared to a fully updated or newer engine model. Buyers often prefer engines that meet current standards without modifications.

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The Caterpillar 4685119 (CAT 468-5119) crankshaft is a solid, reliable choice for applications where you need a **proven, durable, and cost-effective** solution for an older engine. It excels in **high-torque, heavy-duty, or legacy systems** where modern compliance isn t a concern. However, if you re working in **emissions-regulated environments, need improved efficiency, or plan to maximize performance**, a newer engine with a contemporary crankshaft may be a better long-term investment.

- **Your budget** (older parts are cheaper upfront but may cost more in maintenance).

- **Your application s requirements** (emissions, performance, or longevity needs).

- **Future flexibility** (whether you ll need to upgrade components later).

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- You re maintaining an older engine in a **non-emissions-sensitive** application (e.g., off-grid power, industrial backup, or legacy machinery).

- You prioritize **cost savings and reliability** over modern efficiency.

- You have access to **proper maintenance and spare parts** to support the engine s longevity.

- Your application requires **emissions compliance** (Tier 4, EPA, etc.).

- You want **better fuel efficiency, lower maintenance, or higher performance**.

- You plan to **keep the engine for 10 years**, as newer designs may offer fewer future issues.

- You re open to **retrofitting with a modern crankshaft** (e.g., from a C13 or C15 engine) for improved durability and support.

For most **new installations or emissions-regulated uses**, a **newer Caterpillar engine with a contemporary crankshaft** (e.g., 3500-series or later) would be the stronger recommendation. However, if you re working with an existing system and the 4685119 fits your needs, it remains a **practical and dependable option**. Always verify compatibility with your engine s other components and consult a Caterpillar-certified technician before purchasing.

Details:

part #: 4685119 prices

• $8787.27-$15295.33

specifications cranshafengin:

• for makes: Caterpillar
• mpn: 4685119
• part type: Crankshaft
• oe/oem part number: 4685119 468-5119

offer cranshafengin:

• best offers: True
• started: April 29, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• sold: 0

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• other
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• credit card: Discover

general cranshafengin:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

seller cranshafengin:

• # reviews: 102
• rating: 98.9%
• city: Key West, Florida

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• policy: No Returns

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