MITSUBISHI MQ718259 Crankshaft

( Manufacturer Part Number: MQ718259 ), ( Part Type: Crankshaft ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 2022 2023 ), ( Parts Included: Only Part Reference 31 On The Diagram Is Included )

Review MITSUBISHI Genuine Crankshaft fits OUTLANDER 2022–2023

The **Mitsubishi MQ718259 crankshaft** is a precision-engineered, high-performance component designed to meet the rigorous demands of modern automotive and industrial applications, particularly within Mitsubishi s lineup of gasoline-powered engines. Crafted from a proprietary alloy steel blend, this crankshaft exemplifies durability, strength, and reliability, ensuring optimal power transmission and longevity under extreme operating conditions. The MQ718259 features a robust main journal and crankpin design, optimized for smooth operation and minimal vibration, which is critical for maintaining engine efficiency and reducing wear on connected components such as bearings, rods, and pistons. Its counterweights are strategically balanced to mitigate torsional forces, enhancing overall engine stability and reducing fatigue over time. The crankshaft s surface undergoes a meticulous heat-treatment process, including induction hardening and nitriding, to achieve a hardness of approximately 50-55 Rockwell C, providing exceptional resistance to abrasion, corrosion, and thermal stress. This treatment also ensures a fine, uniform case depth, balancing hardness with toughness to prevent premature cracking or deformation. The MQ718259 is meticulously machined to tight tolerances, with precision-ground journals and crankpins to minimize friction and maximize lubrication efficiency, contributing to fuel economy and reduced emissions. Whether integrated into a high-revving sports engine or a dependable daily driver, this crankshaft delivers consistent performance, making it an indispensable part of Mitsubishi s commitment to engineering excellence. Its compatibility with a range of engine displacements underscores its versatility, catering to both performance enthusiasts seeking enhanced power output and mechanics prioritizing durability and ease of maintenance.

**Pros and Cons of Buying a Mitsubishi MQ718259 Crankshaft**

The Mitsubishi MQ718259 crankshaft is a critical component for the 2.4L 4G63 engine, commonly found in models like the Mitsubishi Lancer, Eclipse, and Galant. Below is a detailed analysis of its advantages and disadvantages.

### **Pros**

1. **High Quality and Durability**

The MQ718259 crankshaft is manufactured by Mitsubishi, a reputable automaker known for producing reliable engine components. It is designed to withstand the stress of high-performance applications, including forced induction (turbocharging or supercharging), provided the engine is properly maintained.

2. **Compatibility and Availability**

This crankshaft is widely compatible with aftermarket engine builds, particularly for the 4G63 engine family. It is a common replacement part for engines that have suffered from crankshaft failure due to wear, bending, or cracks. The part is readily available from both OEM and aftermarket suppliers, ensuring ease of procurement.

3. **Performance Potential**

When paired with a balanced engine setup (e.g., upgraded pistons, rods, and bearings), the MQ718259 crankshaft can support higher RPM and torque levels. Many enthusiasts use this crankshaft as a foundation for building high-performance engines, especially in naturally aspirated or mildly turbocharged applications.

4. **Cost-Effective for Replacement**

Compared to building an entirely new engine, replacing just the crankshaft is significantly more affordable. The cost of the crankshaft itself is relatively low, especially when sourced from reputable aftermarket suppliers. This makes it a practical solution for restoring an engine to working condition without a full rebuild.

5. **Widely Documented and Supported**

The 4G63 engine community is extensive, with ample resources available online for troubleshooting, modifications, and upgrades. This means that finding technical guidance, forums, and experienced builders who have worked with this crankshaft is straightforward.

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### **Cons**

1. **Potential for Weakness Under Extreme Stress**

While the MQ718259 crankshaft is robust for stock and mildly modified applications, it is not designed for extreme high-performance builds (e.g., aggressive turbocharging, nitrous oxide, or extreme forced induction). Under such conditions, the crankshaft may fail prematurely due to fatigue or stress fractures, especially if the rest of the engine components (e.g., rods, bearings) are not upgraded accordingly.

2. **Requires Professional Installation**

Installing a crankshaft is a complex process that demands precision. Improper installation such as incorrect bearing clearance, misalignment, or failure to follow torque specifications can lead to catastrophic engine failure. This necessitates either professional installation or extensive mechanical expertise.

3. **Depreciation and Long-Term Reliability Concerns**

Older engine designs, like the 4G63, are not as refined as modern counterparts. While the MQ718259 crankshaft itself may be durable, the overall engine architecture can be prone to issues such as oil leaks, timing chain wear, or cylinder head problems. These secondary issues may require additional investments to keep the engine running reliably over time.

4. **Limited Longevity in High-Mileage or Abused Engines**

If the original engine was neglected (e.g., poor maintenance, lack of oil changes, or running on low-quality fuel), the crankshaft may already be damaged or have reduced lifespan. In such cases, simply replacing the crankshaft without addressing other engine wear (e.g., rods, bearings, camshaft) may not yield long-term reliability.

5. **Aftermarket Quality Variability**

While many aftermarket suppliers offer the MQ718259 crankshaft, not all parts are created equal. Some cheaper or counterfeit crankshafts may lack the precision machining, heat treatment, or balancing required for optimal performance. It is critical to source the part from a trusted manufacturer or dealer to avoid quality issues.

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### **Conclusion**

The Mitsubishi MQ718259 crankshaft is a solid choice for restoring or upgrading a 2.4L 4G63 engine, particularly for stock or mildly modified applications. Its durability, compatibility, and availability make it a practical and cost-effective solution for many enthusiasts. However, it is not a "one-size-fits-all" component for extreme performance builds, and its long-term reliability depends heavily on proper installation, supporting engine modifications, and ongoing maintenance.

For most users, this crankshaft is a worthwhile investment if the engine is otherwise in good condition or being rebuilt with compatible components. Those planning aggressive modifications should consider upgrading to a stronger crankshaft (e.g., a forged or high-performance aftermarket alternative) to ensure longevity and reliability.

---

### **Recommendation**

The MQ718259 crankshaft is an excellent replacement if the engine is otherwise sound. Pair it with fresh bearings, rods, and proper lubrication to maximize its lifespan. Ensure installation is done by a professional or someone with experience in crankshaft replacement.

If you plan to push the engine beyond stock specifications, consider upgrading to a **forged crankshaft** (e.g., from manufacturers like JE, Scat, or Crane) or a high-quality aftermarket counterpart designed for forced induction. These cranks are stronger, more resistant to fatigue, and better suited for extreme stress.

Before purchasing the crankshaft, inspect the rest of the engine components (rods, bearings, camshaft, timing chain). If other parts are worn or damaged, address them simultaneously to avoid premature failure of the new crankshaft.

Always buy the MQ718259 crankshaft from a trusted dealer or manufacturer to avoid counterfeit or low-quality parts. Check reviews, certifications, and warranties before making a purchase.

Regardless of the crankshaft, ensure the engine receives regular oil changes, proper cooling, and timely maintenance. Running the engine with poor oil quality or neglecting other components will reduce the crankshaft s lifespan.

The Mitsubishi MQ718259 crankshaft is a **good choice for stock or lightly modified 4G63 engines**, but it is not ideal for extreme performance builds without additional upgrades. For most enthusiasts, it offers a balance of reliability and cost-effectiveness, provided it is installed and supported correctly.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Electrical parts are not returnable. Parts must be resalable and in the original packaging.

part #: mq718259 prices

• $1029.15-$1194.09

specifications cranshafengin:

• for models: Outlander
• for makes: Mitsubishi
• for years: 2022-2023
• mpn: Mq718259
• part type: Crankshaft
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• year: 2022 2023
• parts included: Only Part Reference 31 On The Diagram Is Included

shipping cranshafengin:

• cost: $52.43
• type: Fixed
• transit: 4-11 Days
• carrier: FedEx
• class: Standard
• service: FedEx Ground / FedEx Home Delivery

seller cranshafengin:

• # reviews: 1072
• city: Elkton, Maryland
• rating: 99.4%

offer cranshafengin:

• sold: 0
• started: February 10, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1

payments cranshafengin:

• wallet: Google-pay
• other
• credit card: Diners-club

returns cranshafengin:

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

general cranshafengin:

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

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