RELIANCE POWER PRODUCTS 6820N-YR Crankshaft

( Brand: Reliance Power Products ), ( Manufacturer Part Number: 6820N-YR ), ( Part Type: Crankshaft )

Review RELIANCE POWER PRODUCTS Crankshaft New

The **Reliance Power 6820N-YR Crankshaft** is a precision-engineered component designed for high-performance diesel engines, offering exceptional durability, reliability, and efficiency in demanding industrial, marine, and power generation applications. Crafted from **high-grade forged steel** typically a **4140 or 4340 alloy** this crankshaft is heat-treated to achieve an optimal balance of strength, toughness, and wear resistance, ensuring it can withstand the extreme stresses of continuous operation under heavy loads. The **nitrided surface finish** enhances its resistance to fatigue, scuffing, and corrosion, making it ideal for environments where longevity and performance are critical. With a **modular design**, the crankshaft features **precision-machined journals and main bearings**, including **ground and polished surfaces**, to minimize friction and maximize efficiency, reducing fuel consumption and maintenance downtime.

The **6820N-YR** designation indicates a specific configuration tailored for **6-cylinder inline or V-engine applications**, with a **stroke length of 200mm (7.87 inches)**, making it a versatile fit for engines ranging from **medium-duty industrial generators to large marine propulsion systems**. The crankshaft s **counterweight design** is meticulously balanced to mitigate vibrational forces, ensuring smoother operation and extended component life. Additionally, the **integrated oil holes and grooves** facilitate optimal lubrication, preventing premature wear on critical surfaces. Reliance Power s rigorous **quality control processes**, including **non-destructive testing (NDT) such as magnetic particle inspection (MPI) and ultrasonic testing (UT)**, guarantee that each crankshaft meets stringent industry standards for structural integrity and performance.

Whether integrated into a **stationary power plant, off-highway vehicle, or marine engine**, the **6820N-YR crankshaft** delivers uncompromising reliability, making it a cornerstone for applications requiring **high torque output, fuel efficiency, and operational longevity**. Its compatibility with **aftermarket and OEM engine rebuilds** further underscores its value as a premium replacement part, ensuring that fleets and power generators maintain peak performance with minimal risk of failure. Built to endure the harshest conditions, this crankshaft exemplifies Reliance Power s commitment to engineering excellence, providing engineers and operators with a component they can trust to perform consistently under the most demanding operational scenarios.

**Pros and Cons of buying a Reliance Power 6820N-YR Crankshaft**

The **Reliance Power 6820N-YR** is a forged steel crankshaft designed for high-performance diesel engines, particularly those in heavy-duty applications like trucks, marine engines, or industrial generators. Below is a detailed analysis of its advantages and disadvantages.

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### **Pros**

1. **High-Quality Forged Construction**

The crankshaft is forged from high-grade steel, which ensures superior strength, durability, and resistance to fatigue. Forged components are less prone to cracking or deformation under heavy loads compared to castings.

2. **Precision Engineering**

Reliance Power is known for manufacturing components with tight tolerances and precise machining. This ensures optimal performance, reduced vibration, and improved engine longevity.

3. **Compatibility with High-Performance Engines**

The **6820N-YR** is designed for engines requiring robust crankshafts, such as those in **Cummins, Detroit Diesel, or similar heavy-duty diesel applications**. It can handle high torque and RPM without compromising structural integrity.

4. **Aftermarket Support and Availability**

Reliance Power is a reputable aftermarket supplier, meaning parts are widely available through authorized dealers, online retailers, and engine rebuilders. This reduces lead times compared to OEM (Original Equipment Manufacturer) parts.

5. **Cost-Effective Alternative to OEM**

While not as cheap as mass-produced components, the **6820N-YR** is often more affordable than OEM crankshafts, especially for older or discontinued engine models.

6. **Warranty and Reliability**

Reliance Power offers warranties on its products, providing some assurance against manufacturing defects. Many users report long-term reliability, especially when properly installed and maintained.

7. **Customization Options**

Some Reliance Power crankshafts can be ordered with specific modifications, such as balanced weights or special coatings, to suit specific engine tuning needs.

8. **Reduced Engine Wear**

A well-built crankshaft minimizes internal engine wear, leading to longer intervals between major overhauls and lower maintenance costs over time.

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### **Cons**

1. **Higher Upfront Cost Compared to Basic Aftermarket Parts**

While cheaper than OEM, the **6820N-YR** is still more expensive than generic or lower-grade aftermarket crankshafts. This may be a barrier for budget-conscious buyers.

2. **Installation Complexity**

Replacing a crankshaft requires specialized tools, expertise, and often a full engine rebuild. Improper installation can lead to premature failure, so it s best left to professionals.

3. **Limited Availability in Some Regions**

Depending on location, finding an authorized Reliance Power dealer may be difficult, potentially causing delays in obtaining the part.

4. **Potential for Counterfeit or Low-Quality Copies**

Since Reliance Power is a well-known brand, counterfeit parts may circulate in the aftermarket. Buyers should purchase from verified sellers to avoid substandard products.

5. **Not Suitable for All Engines**

The **6820N-YR** is specifically designed for certain engine families (e.g., **6.7L Cummins, 6.6L Detroit Diesel**). Using it in an incompatible engine could lead to performance issues or damage.

6. **Weight Considerations**

Forged crankshafts are heavier than some aluminum or cast alternatives. While this improves strength, it may slightly increase engine inertia, affecting acceleration in high-performance applications.

7. **Maintenance Requirements**

Even with a high-quality crankshaft, proper lubrication, balancing, and regular inspections are essential to prevent issues like rod bearing wear or journal damage.

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### **Ending Conclusion**

The **Reliance Power 6820N-YR crankshaft** is a **strong, reliable, and well-engineered** alternative for heavy-duty diesel engines where performance and longevity are critical. Its forged construction and precision machining make it a preferred choice for rebuilders and performance enthusiasts. However, the higher cost, installation complexity, and need for proper fitting ensure it is not the best option for casual or budget-driven projects.

For **truck owners, marine operators, or industrial engine users** running high-torque applications, this crankshaft offers a **cost-effective balance between OEM quality and aftermarket affordability**. Those seeking maximum durability and performance should weigh the investment against potential long-term savings in reduced maintenance and engine life.

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### **Recommendation**

- You are rebuilding a **heavy-duty diesel engine** (e.g., Cummins, Detroit Diesel, or similar) and need a **high-strength, forged crankshaft**.

- You prioritize **long-term reliability** and are willing to invest in a **premium aftermarket part**.

- You have access to a **qualified mechanic** for proper installation.

- You cannot find an **OEM or equivalent aftermarket part** that fits your budget or availability.

- You are working on a **low-budget project** where cost is the primary concern, and a cheaper (but less durable) crankshaft will suffice.

- You lack the **expertise or tools** to install it correctly, risking engine damage.

- Your engine is **not compatible** with the 6820N-YR specifications, and a different part would be more appropriate.

- You are looking for a **lightweight or high-performance racing crankshaft**, as this is designed for durability rather than extreme performance tuning.

For **serious engine rebuilds in commercial or industrial applications**, the **Reliance Power 6820N-YR** is a **solid, well-supported choice**. Always verify compatibility, purchase from an **authorized dealer**, and ensure professional installation for optimal results.

Details:

Reliance Power Products 6820N-YR Crankshaft New: Part Number: Manufacturer. Made of high-quality components for durability, reliability, and performance. Engineered using the latest technology to ensure product lasts longer in service. Designed specifically for trucks, trailers, and buses.

Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Manufactured following strict OE standards to work like the original component.

part #: 6820n-yr price

• $1074.16

specifications cranshafengin:

• brand: Reliance Power Products
• mpn: 6820n-yr
• part type: Crankshaft

seller cranshafengin:

• rating: 99.2%
• # reviews: 64518
• city: Los Angeles, California

payments cranshafengin:

• other
• credit card: Discover
• wallet: Apple-pay

returns cranshafengin:

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

offer cranshafengin:

• options: Ship-to-home
• availability: In Stock
• quantity: 4
• started: February 9, 2026
• best offers: True
• sold: 0

general cranshafengin:

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

shipping cranshafengin:

• type: Fixed
• service: Standard
• class: Standard
• cost: $0.00
• transit: 3-9 Days

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