KOMATSU YM119623-21700 Crankshaft

( Manufacturer Part Number: YM119623-21700 ), ( Part Type: Crankshaft )

Review KOMATSU Crankshaft New Oem

The **Komatsu YM119623-21700 Crankshaft** is a precision-engineered, high-performance component designed exclusively for Komatsu heavy-duty diesel engines, specifically tailored to models requiring this exact part number for optimal functionality and longevity. Crafted from a proprietary alloy steel blend, this crankshaft is forged to exacting standards, ensuring superior strength, durability, and resistance to fatigue under extreme operational stresses. The part features a meticulously balanced design, with precision-machined main and crankpin journals that minimize vibration and wear, thereby extending the lifespan of the engine s bearings and other critical components. The surface hardness is carefully controlled through a heat-treatment process, providing an ideal balance between toughness and wear resistance, which is essential for withstanding the high torque and cyclic loading inherent in industrial and construction applications.

This crankshaft is engineered to meet or exceed OEM specifications, guaranteeing seamless compatibility with the engine s internal mechanisms, including the connecting rods, bearings, and timing components. The part s design incorporates fillets and radii optimized for stress distribution, reducing the risk of premature failure in demanding environments such as mining, marine, or power generation settings. Additionally, the crankshaft s counterweights are precisely balanced to mitigate torsional vibrations, a critical factor in maintaining smooth operation and reducing the strain on the engine s drivetrain. For maintenance and repair professionals, this part is a direct replacement, ensuring that engines fitted with the YM119623-21700 crankshaft will perform reliably, even under the most arduous conditions.

When installed, the Komatsu YM119623-21700 crankshaft contributes to enhanced fuel efficiency and reduced emissions by optimizing engine performance, as its smooth operation minimizes energy loss due to friction and mechanical inefficiencies. This component is a testament to Komatsu s commitment to engineering reliability into every critical part, making it an indispensable element for operators who demand peak performance from their heavy machinery. Whether used in new engine builds or as a high-quality replacement, this crankshaft is a cornerstone of dependable power, ensuring that engines remain operational for extended periods with minimal downtime.

### **Pros and Cons of Buying a Used Komatsu YM119623-21700 Crankshaft**

1. **Cost Savings** A used crankshaft is significantly cheaper than a new OEM part, making it a practical choice for budget-conscious operators.

2. **Immediate Availability** Used parts are often available for quick purchase, reducing downtime compared to waiting for a new part from the manufacturer.

3. **Proven Performance** If sourced from a reliable machine with proper maintenance records, a used crankshaft may still function well, especially if it has been rebuilt or inspected.

4. **Compatibility** Since it is an exact replacement part, it will fit the engine without modification, ensuring proper operation.

5. **Access to Specialized Parts** Some Komatsu components, especially older or discontinued models, are harder to find new, making used parts a viable alternative.

1. **Unknown Service History** Without full maintenance records, there is no guarantee of the crankshaft s remaining lifespan or potential hidden damage (e.g., cracks, wear, or past repairs).

2. **Risk of Premature Failure** A worn or improperly maintained crankshaft could fail unexpectedly, leading to costly engine damage or unplanned downtime.

3. **Limited Warranty or No Warranty** Used parts typically come with no warranty, meaning the buyer bears all risks of failure or defects.

4. **Potential for Counterfeit or Mismatched Parts** There is a risk of purchasing a non-genuine or incorrectly labeled part, which could cause compatibility issues.

5. **Higher Long-Term Costs** If the crankshaft fails soon after installation, replacement costs (including labor) may outweigh the initial savings of buying used.

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### **Conclusion**

Buying a used Komatsu YM119623-21700 crankshaft can be a cost-effective solution for operators facing tight budgets or urgent part needs. However, the risks of unknown condition, lack of warranty, and potential early failure must be carefully weighed. If the part is sourced from a trusted supplier with inspection reports, documentation, or a reputable rebuild service, the risk can be mitigated. For critical applications where reliability is non-negotiable, a new or remanufactured part may be the safer long-term investment.

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### **Recommendation**

- **If budget is tight and the part is sourced from a verified supplier** (e.g., a well-known used machinery dealer with inspection certifications), a used crankshaft can be a reasonable choice **but only if paired with a thorough pre-purchase inspection** (ultrasonic testing, magnetic particle inspection, or visual inspection for cracks).

- **If reliability and warranty coverage are priorities**, opt for a **new or remanufactured OEM crankshaft** from Komatsu or an authorized service center. Remanufactured parts often come with warranties and undergo rigorous quality checks.

- **Consider a rebuild option** some engine shops offer crankshaft rebuilds with warranties, which may be more cost-effective than buying used while ensuring better longevity.

- **Avoid purchasing from unverified sources** always request maintenance history, inspection reports, or a rebuild certificate to minimize risk.

Ultimately, the decision depends on the urgency of the need, available budget, and the operator s risk tolerance. For heavy-duty machinery like Komatsu engines, erring on the side of caution whether through a new part or a professionally inspected used one is often the best approach.

Details:

Buyer should verify this is the exact part needed before purchasing.

part #: ym11962321700 prices

• $619.31-$932.43

specifications cranshafengin:

• for makes: Komatsu
• mpn: Ym119623-21700
• part type: Crankshaft

offer cranshafengin:

• best offers: True
• started: May 13, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock

shipping cranshafengin:

• type: Fixed
• cost: $21.95
• service: Standard
• transit: 2-6 Days
• class: Standard

seller cranshafengin:

• city: Columbus, Wisconsin
• # reviews: 16307
• rating: 99.8%

returns cranshafengin:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

payments cranshafengin:

• wallet: Paypal
• credit card: Visa
• other

general cranshafengin:

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

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