1. Engine Crankshafts Products
  2. sku: 20286590937666762
  3. MOPAR CRS103603580

MOPAR CRS103603580 Crankshaft Block

fits make: Dodge, Mopar.

Crs103603580 Mopar Dodge Crankshaft Small Block 360

( Brand: Mopar ), ( Manufacturer Part Number: CRS103603580 ), ( Part Type: Crankshaft Block ), ( Manufacturer Warranty: 1 Year ), ( Items Included: Bolts ), ( Material: Steel ), ( Vintage Part: Yes )

Review MOPAR Dodge Crankshaft Small Block fits 360

The **Mopar CRS103603580 Dodge Crankshaft Block 360** is a meticulously engineered, high-performance replacement crankshaft designed specifically for the iconic 360-cubic-inch V8 engines found in select Dodge models, including the legendary **Dodge Charger, Challenger, and Durango** from the 2011 2013 model years. Crafted from **forged 4340 alloy steel**, this crankshaft is built to withstand the extreme stresses of high-performance driving, offering superior durability and reliability compared to standard cast components. The **ground and polished journals** ensure smooth operation, reducing friction and minimizing wear on the engine s bearings, while the **precision-machined counterweights** help balance the rotating assembly, enhancing overall engine smoothness and longevity. This crankshaft features **five main bearing journals** and **seven rod journals**, all designed to handle the torque demands of both street and mild performance applications, making it an excellent choice for enthusiasts looking to restore or upgrade their 360 V8. Whether you're rebuilding a classic muscle car, restoring a daily driver, or preparing a high-mileage engine for continued service, the **Mopar CRS103603580** delivers the strength and precision needed to keep your engine running strong for thousands more miles. Backed by Mopar s reputation for quality and compatibility, this part is a direct-fit replacement, ensuring a seamless installation with minimal modifications required.

The **Mopar CRS103603580** is a replacement crankshaft for the **Dodge 360 V8 engine**, commonly found in vehicles like the **Dodge Charger, Challenger, and Durango** from the early 2000s. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Mopar CRS103603580 Crankshaft**

1. **OEM Quality and Fitment**

- This is a genuine Mopar (Chrysler) part, meaning it is designed to match the original specifications of the 360 V8 engine. It should fit perfectly without requiring extensive modifications, reducing the risk of compatibility issues.

2. **Durability and Performance**

- The 360 V8 crankshaft is built to handle high RPMs and torque, making it suitable for both stock and mildly modified engines. If the original crank was worn or damaged, replacing it with a new one can restore power output and longevity.

3. **Warranty Coverage**

- Mopar parts often come with a warranty (typically 12 months or 12,000 miles), providing peace of mind against defects in materials or workmanship. This is especially useful if the crankshaft fails prematurely.

4. **Ease of Installation**

- Since it is an OEM part, installation should be straightforward if you have experience with engine work or if you re working with a mechanic familiar with the 360 V8. The crankshaft is a critical component, but the process is well-documented for this engine family.

5. **Compatibility with Aftermarket Upgrades**

- If you plan to modify your engine (e.g., forced induction, bigger valves, or a performance cam), a fresh crankshaft ensures a solid foundation for those upgrades. It can also help prevent catastrophic failure from stress induced by modifications.

6. **Reliability for High-Mileage Engines**

- For older 360 V8 engines with high mileage, a replacement crankshaft can eliminate issues like excessive vibration, oil consumption, or poor compression caused by a worn main journal or rod bearings.

7. **Support for Classic and Modified Applications**

- The 360 V8 is a popular engine in classic muscle cars and modern muscle cars (e.g., Dodge Challenger SRT8). A new crankshaft is a cost-effective way to keep these engines running reliably without resorting to rebuilt or used parts with unknown histories.

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### **Cons of buying a Mopar CRS103603580 Crankshaft**

1. **Cost Relative to Alternatives**

- The Mopar crankshaft is not the cheapest option on the market. Prices typically range from **$300 to $600**, depending on the retailer and whether it s new or refurbished. For budget-conscious buyers, aftermarket or used cranks (from reputable sources) may be more affordable, though with trade-offs in quality and warranty.

2. **Limited Availability of Specialized Versions**

- If you re running a heavily modified engine (e.g., big-block displacement, extreme forced induction, or custom balancing), the stock Mopar crank may not be ideal. In such cases, aftermarket cranks (e.g., from **Crankshafts.com, Eagle, or JE**) offer custom options like forged construction, larger journals, or balanced weights for specific applications.

3. **Installation Complexity**

- Replacing a crankshaft requires **disassembling the entire lower end of the engine**, including removing the oil pan, main bearings, and connecting rods. This is a labor-intensive job that may not be suitable for DIYers without mechanical experience. Hiring a mechanic will add to the cost (typically **$500 $1,500** depending on shop rates and engine condition).

4. **Potential for Additional Repairs**

- If the engine was neglected before the crankshaft failure, other components (e.g., bearings, rods, or the block itself) may also be worn. A new crankshaft alone won t fix these issues, so a **full engine rebuild** might be necessary, increasing total expenses.

5. **Weight Considerations**

- The stock Mopar crank is cast, which means it s heavier than some aftermarket forged cranks. While this isn t a major issue for most applications, high-performance builds (especially those with extreme RPM goals) may benefit from the reduced reciprocating mass of a forged crank.

6. **Lead Times and Stock Availability**

- Mopar parts can sometimes have **longer lead times**, especially for older engine models. If you need the part urgently, you may need to order from a specialty supplier or consider a used crank as a temporary solution.

7. **No Guarantee of Original Performance**

- While the Mopar crank is reliable, it is not inherently "better" than the original if the failure was due to poor maintenance (e.g., lack of oil changes, incorrect oil viscosity, or excessive heat). Replacing it without addressing root causes may not fully restore the engine s health.

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### **Conclusion**

The **Mopar CRS103603580 crankshaft** is a solid choice for **replacing a failed or worn crankshaft in a 360 V8 engine**, especially if you prioritize **OEM quality, warranty coverage, and ease of fitment**. It is well-suited for **stock or mildly modified engines** where reliability and longevity are key. However, it may not be the best option for **high-performance builds, extreme modifications, or budget-conscious buyers**, as aftermarket or used alternatives could offer cost savings or specialized benefits.

If your engine is otherwise in good condition and you re looking for a **direct replacement with minimal risk**, the Mopar part is a dependable selection. If you re planning **aggressive modifications** or need a **lighter, stronger crank**, exploring aftermarket options (e.g., forged cranks) may be worth the investment.

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### **Recommendation**

- **Buy the Mopar CRS103603580 if:**

- You need a **direct OEM replacement** for a failed crankshaft.

- Your engine is **stock or lightly modified**, and you want a **warrantied, reliable part**.

- You re comfortable with **engine disassembly** or have a trusted mechanic to handle the installation.

- You want to **avoid the uncertainty of used or aftermarket parts** with unknown histories.

- **Consider alternatives if:**

- You re on a **tight budget** and can find a **high-quality used crank** (from a reputable source like **Crankshafts.com or a trusted junkyard**).

- You re building a **high-performance engine** and need a **forged crank** for durability and reduced weight.

- Your engine has **other major wear issues** (e.g., rods, bearings, or block damage), in which case a **full rebuild** may be more cost-effective in the long run.

**Final Verdict:** For most **stock or mildly modified 360 V8 applications**, the Mopar crankshaft is a **strong, reliable choice**. Just ensure you address any **underlying engine issues** and budget for **installation labor** if needed. If you re pushing the engine to extreme limits, research aftermarket options to see if they offer a better fit for your goals.

Details:

The Dodge Mopar Crankshaft Small block 360 is a vintage performance part made of steel, specifically designed for small engines.

part #: crs103603580 price

  • $375.00

specifications cranshafengin:

  • for makes: Dodge, Mopar
  • brand: Mopar
  • mpn: Crs103603580
  • part type: Crankshaft Block
  • manufacturer warranty: 1 Year
  • items included: Bolts
  • material: Steel
  • vintage part: Yes

offer cranshafengin:

  • availability: In Stock
  • sold: 0
  • best offers: True
  • options: Ship-to-home
  • quantity: 1
  • started: May 11, 2026

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  • city: Grants Pass, Oregon
  • # reviews: 123
  • rating: 100.0%

general cranshafengin:

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

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shipping cranshafengin:

  • cost: $105.02
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  • class: Standard
  • type: Calculated
  • carrier: USPS
for makes: dodge, mopar, part type: crankshaft block, manufacturer warranty: 1 year, items included: bolts, vintage part: yes,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, material: steel, sku: 20286590937666762,
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1 offer $375.00 USD
  • New. Offer #1 priced at $375.00 + $105.02 shipping estimate = $480.02* total. The Dodge Mopar Crankshaft Small block 360 is a vintage performance part made of steel, specifically designed for small block 360 engines.+$105.02 shipping

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