MITSUBISHI 1115A220 Engine Connecting Rod Bolt

( Manufacturer Part Number: 1115A220 ), ( Part Type: Engine Rod Bolt ), ( Genuine Oem: Yes ), ( Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 ), ( Replaces Part Number: Md371803 )

Review MITSUBISHI Genuine Engine Connecting Rod Bolt fits 2002–2012

The **Mitsubishi 1115A220 engine connecting rod bolt** is a precision-engineered fasteners designed specifically for the high-performance and reliability demands of the Mitsubishi 1115A220 inline-four gasoline engine, commonly found in models like the Mitsubishi Eclipse, Lancer, and Galant. Crafted from high-grade **alloy steel** with a **quenched and tempered** heat treatment process, these bolts are engineered to withstand extreme mechanical stress, thermal cycling, and high compression forces encountered during engine operation. Each bolt features a **fine-threaded design** with a **12-point drive socket head**, ensuring optimal torque distribution and minimizing the risk of stripping or deformation under heavy loads. The **chromated finish** provides excellent corrosion resistance, protecting against moisture, salt, and environmental contaminants that could compromise structural integrity over time. With a **specific torque specification** (typically around **60 70 ft-lbs** for proper installation), these bolts are critical for maintaining proper rod-to-crankshaft alignment, preventing catastrophic failure due to bolt stretch or loosening. Their **high tensile strength** and **fatigue resistance** make them ideal for both original equipment applications and high-mileage rebuilds, where durability and precision are paramount. Whether used in a stock engine or a modified performance setup, these connecting rod bolts ensure the reliability and longevity of the Mitsubishi 1115A220 powerplant, delivering the performance and dependability expected from Mitsubishi s engineering standards.

### Pros and Cons of Buying a Mitsubishi 11G:15A220 Engine Connecting Rod Bolt

The **Mitsubishi 11G:15A220** engine is a popular inline-four unit known for its reliability, performance, and widespread use in vehicles like the Mitsubishi Lancer, Eclipse, and Galant. The **connecting rod bolts** are critical components that secure the connecting rods to the crankshaft, ensuring proper engine function. Below is an analysis of the pros and cons of purchasing aftermarket or replacement connecting rod bolts for this engine.

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### **Pros of Purchasing Connecting Rod Bolts**

1. **Enhanced Durability and Strength**

Aftermarket or high-quality OEM replacement bolts are often made from superior materials (e.g., forged steel, high-strength alloys) compared to standard bolts. This reduces the risk of bolt stretch, breakage, or loosening under high stress, which is critical in high-performance or heavily modified engines.

2. **Improved Reliability**

Original equipment bolts can degrade over time due to heat, vibration, and stress, especially in high-performance applications. Replacing them with aftermarket bolts designed for higher torque ratings or corrosion resistance can prevent catastrophic engine failure (e.g., rod bolt failure leading to a blown engine).

3. **Compatibility with Modifications**

If you are tuning your engine (e.g., forced induction, turbocharging, or increased power output), stock bolts may not be sufficient. Aftermarket bolts are often rated for higher torque and can handle the increased stress from modifications without failing.

4. **Corrosion Resistance**

Some aftermarket bolts are treated with anti-seize compounds or coated to resist corrosion, which is beneficial in environments with high humidity or salt exposure. This extends the lifespan of the bolts and reduces maintenance needs.

5. **Easier Installation and Removal**

High-quality bolts often come with clear installation instructions and may include features like serrated heads or torque indicators to ensure proper tightening. This simplifies the installation process compared to worn or stripped stock bolts.

6. **Cost-Effective Long-Term Solution**

While aftermarket bolts may have a higher upfront cost than OEM bolts, they can save money in the long run by preventing costly engine damage from bolt failure. Regular replacement of bolts is a small price compared to a rebuilt engine.

7. **Access to Specialized Parts**

Some aftermarket suppliers offer bolts with unique features, such as **torque-to-yield** properties (where the bolt stretches slightly under load to absorb stress) or **pre-loaded** bolts that are tightened to a specific tension before installation. These features can improve engine reliability in demanding applications.

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### **Cons of Purchasing Connecting Rod Bolts**

1. **Higher Initial Cost**

Aftermarket bolts, especially those from reputable brands, are often more expensive than OEM bolts. For budget-conscious buyers, this can be a significant drawback, especially if multiple bolts need replacement.

2. **Potential for Incompatibility**

Not all aftermarket bolts are guaranteed to fit perfectly with the 11G:15A220 engine. Some may require additional washers, spacers, or modifications to the engine block. Using the wrong size or type of bolt can lead to improper seating or damage to the engine components.

3. **Risk of Over-Tightening**

High-strength bolts require precise torque specifications. Over-tightening can strip threads, damage the crankshaft or rod, or cause premature bolt failure. Under-tightening, on the other hand, can lead to loosening under load. This requires careful attention during installation.

4. **Quality Variability**

The aftermarket is not always consistent in quality. Some cheaper bolts may be made from lower-grade materials or lack proper heat treatment, leading to premature failure. It is essential to research brands and read reviews to ensure reliability.

5. **Installation Complexity**

Replacing connecting rod bolts requires disassembling the engine to some extent, which can be time-consuming and labor-intensive. This may not be feasible for DIYers without mechanical experience or proper tools (e.g., torque wrench, bolt stretcher).

6. **Warranty Concerns**

If the engine is still under warranty, installing aftermarket bolts may void the warranty, as manufacturers often require OEM parts for warranty coverage. This is a critical consideration for newer vehicles.

7. **Limited Availability of OEM Parts**

While aftermarket options are plentiful, OEM bolts may be harder to find, especially for older engine models. However, they are often a more reliable choice if the engine is not modified and the bolts are still in good condition.

8. **Potential for Misalignment**

If bolts are not installed symmetrically or with the correct torque, it can cause uneven stress on the crankshaft or rods, leading to vibration or premature wear. This requires careful attention to detail during installation.

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### **Conclusion**

The decision to purchase aftermarket or replacement connecting rod bolts for the **Mitsubishi 11G:15A220 engine** depends on your specific needs, budget, and engine condition. Here s a summary of the key factors:

- You are modifying the engine (e.g., forced induction, high RPM, or increased power output).

- You want to replace worn or degraded stock bolts to improve reliability.

- You are operating in harsh conditions (e.g., high humidity, salt exposure) and need corrosion-resistant bolts.

- You are willing to invest in higher-quality parts for long-term durability.

- Your engine is stock and not modified, and the bolts appear to be in good condition.

- You are on a tight budget and cannot afford aftermarket parts.

- Your vehicle is still under warranty, and the manufacturer requires OEM parts for coverage.

- You lack the mechanical experience or tools to properly install aftermarket bolts.

- You are looking for a cost-effective alternative to new OEM bolts and can verify their condition.

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### **Recommendation**

If your engine is not modified and the stock bolts are in good condition (no signs of stretch, corrosion, or damage), there is no urgent need to replace them. However, if you notice any issues (e.g., difficulty tightening, visible wear), replace them with **OEM bolts** or **high-quality aftermarket bolts** from reputable brands like **ARP, Torque Engineering, or Fel-Pro**.

- **ARP 9000 Series Bolts** (forged steel, high strength, torque-to-yield).

- **Torque Engineering Bolts** (pre-loaded, corrosion-resistant).

- **Fel-Pro High-Strength Bolts** (affordable alternative with good performance).

Always follow the manufacturer s torque specifications and installation guidelines.

If you cannot afford aftermarket bolts, consider **used OEM bolts** from a trusted source (e.g., junkyards or reputable online marketplaces). Ensure they are clean, free of corrosion, and have not been previously stretched. Avoid bolts that show signs of wear or damage.

If you are not experienced with engine disassembly, consider having a professional mechanic perform the installation. Improper tightening can lead to catastrophic engine failure, so precision is critical.

- Signs of stretch (bolts that are harder to tighten than usual).

- Corrosion or pitting.

- Cracks or deformities.

Replace bolts in pairs (or sets) to maintain balance and avoid uneven stress.

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### **Final Verdict**

For the **Mitsubishi 11G:15A220 engine**, **aftermarket high-strength bolts are the best choice for modified or high-performance applications**, while **OEM or used OEM bolts may suffice for stock engines** if they are in good condition. Always prioritize quality, proper installation, and adherence to torque specifications to ensure engine reliability. If in doubt, consult a mechanic or engine specialist to guide your decision.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Genuine Mitsubishi Engine Connecting Rod Bolt 1115A220: Parts: From 06/03/ 2002. Parts must be resalable and in the original packaging. Electrical parts are not returnable.

part #: 1115a220 prices

• $5.98-$13.89

specifications pistonrinro:

• for makes: Mitsubishi
• for years: 2002-2012
• mpn: 1115a220
• part type: Engine Rod Bolt
• genuine oem: Yes
• warranty: 1 Year
• fitment type: Direct Replacement
• year: 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
• replaces part number: Md371803

offer pistonrinro:

• sold: 0
• started: February 16, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 4

shipping pistonrinro:

• type: Fixed
• cost: $0.00
• transit: 4-8 Days
• service: Standard
• class: Standard

payments pistonrinro:

• other
• wallet: Google-pay
• credit card: Mastercard

general pistonrinro:

• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
• condition: New

returns pistonrinro:

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

seller pistonrinro:

• city: Bay City, Michigan
• rating: 99.5%
• # reviews: 740

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