MITSUBISHI MN120339 Connector Hose

( Manufacturer Part Number: MN120339 ), ( Part Type: Hose ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 2004 2005 2006 2007 2008 2009 2010 2011 2012 ), ( Parts Included: Only Part Reference 14 On The Diagram Is Included )

Review MITSUBISHI Genuine Connector Hose fits 2004–2012

The **Mitsubishi MN120339 Connector Hose** is a precision-engineered automotive component designed to ensure seamless fluid transfer within Mitsubishi vehicles, particularly those equipped with advanced cooling, power steering, or hydraulic systems. Crafted from high-quality, durable materials, this hose features a robust **reinforced rubber construction** with a reinforced spiral wire braid, providing exceptional resistance to heat, oil, and environmental degradation. The wire reinforcement enhances structural integrity, preventing kinking, collapsing, or excessive flexing under pressure, which is critical for maintaining optimal system performance and longevity. Engineered to meet Mitsubishi s strict OEM specifications, this hose is compatible with a range of models, including select versions of the **Mitsubishi Lancer, Outlander, ASX, and Pajero**, ensuring a perfect fit with minimal risk of leaks or failures.

The hose s **smooth, tapered design** facilitates efficient fluid flow while reducing turbulence, which helps minimize wear on associated components like pumps and seals. Its **black, weather-resistant outer layer** is formulated to withstand exposure to UV radiation, ozone, and harsh climatic conditions, ensuring reliable operation in both urban and off-road environments. The **secure, interference-fit connection** at both ends typically featuring a **clamp-style or snap-fit design** guarantees a tight seal, preventing fluid leaks that could compromise system efficiency or lead to costly repairs. Whether integrated into the engine bay, under the hood, or within the vehicle s undercarriage, this hose is built to endure the demands of daily driving, providing peace of mind for drivers who prioritize performance and durability.

For technicians and DIY enthusiasts, the **MN120339 Connector Hose** offers a hassle-free replacement option, as it is designed to drop into place with ease, often requiring no additional tools beyond basic hand tools for installation. Its compatibility with Mitsubishi s hydraulic and cooling systems underscores its importance in maintaining optimal vehicle operation, from smooth power steering response to consistent engine cooling. By choosing this genuine or high-quality aftermarket alternative, owners can avoid the pitfalls of inferior, brittle, or poorly fitted hoses that may fail prematurely, leading to potential engine damage or steering malfunctions. Ultimately, the **Mitsubishi MN120339 Connector Hose** represents a blend of engineering precision and practical reliability, ensuring that Mitsubishi vehicles continue to perform at their best for years to come.

**Pros and Cons of buying a Mitsubishi MN120339 Connector Hose**

The **Mitsubishi MN120339** is a replacement hose used primarily in the cooling system of certain Mitsubishi vehicles, such as the Lancer, ASX, and Outlander models. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **OEM Quality and Compatibility**

The MN120339 is an original equipment manufacturer (OEM) part or a high-quality aftermarket alternative designed to match Mitsubishi s specifications. This ensures a proper fit and function, reducing the risk of leaks or performance issues.

2. **Reliability and Durability**

Mitsubishi s engineering standards typically result in durable hoses that can withstand the thermal and pressure stresses of a cooling system. A genuine or well-manufactured aftermarket version should last as long as the original, provided it is installed correctly.

3. **Prevents Cooling System Failures**

A failing or cracked hose can lead to coolant leaks, overheating, or even engine damage. Replacing a worn MN120339 hose proactively prevents these costly repairs and extends the lifespan of the engine.

4. **Easy Installation**

The hose is relatively straightforward to replace, especially if you have basic mechanical skills. Most vehicles require only basic tools, and the process typically takes less than an hour. Many online guides and videos provide step-by-step assistance.

5. **Cost-Effective Compared to Engine Damage**

While the part itself is reasonably priced (typically between $20 $50, depending on brand and retailer), replacing it early is far cheaper than dealing with engine overheating or coolant system failures, which can cost thousands in repairs.

6. **Widely Available**

The MN120339 is a common part, so it can be found at most auto parts stores (O Reilly, AutoZone, Advance Auto, etc.), online retailers (Amazon, RockAuto, eBay), and Mitsubishi dealerships. This makes sourcing the part convenient.

7. **Compatibility with Upgrades**

If you ve modified your vehicle s cooling system (e.g., upgraded radiator, water pump, or thermostat), replacing the hose ensures all components work together efficiently.

---

### **Cons**

1. **Potential for Counterfeit or Low-Quality Parts**

Some aftermarket versions of the MN120339 may be counterfeit or poorly made, leading to premature failure. Buying from reputable sellers (e.g., RockAuto, genuine Mitsubishi parts, or well-reviewed brands like Genuine Parts Company) mitigates this risk.

2. **Risk of Overlooking Underlying Issues**

If the hose failure is due to a larger problem (e.g., a failing water pump, clogged radiator, or coolant leak elsewhere), replacing just the hose may not solve the root cause. A thorough inspection of the cooling system is advisable.

3. **Installation Challenges**

While the hose is relatively simple to replace, some vehicles may require draining the coolant system, which can be messy. Additionally, if the hose is located in a tight or hard-to-reach area, installation may be more difficult, especially for inexperienced DIYers.

4. **Cost of Additional Materials**

- Coolant (if draining the system)

- Hose clamps (if the old ones are damaged)

- Anti-seize compound (to prevent corrosion on threads)

- Basic tools (sockets, wrenches, pliers)

These extras can add to the overall cost.

5. **Warranty Voidance (If Purchased from Non-OEM Sources)**

If your vehicle is still under warranty, using non-OEM parts may void certain coverage. Always check with your dealership or insurance provider before proceeding.

6. **Environmental Concerns**

Coolant is hazardous and must be disposed of properly. If you re not experienced with coolant handling, consider taking the vehicle to a shop for the replacement to avoid spills or improper disposal.

---

### **Conclusion**

The **Mitsubishi MN120339 connector hose** is a critical yet relatively inexpensive component that, when replaced in a timely manner, prevents significant engine damage and costly repairs. The benefits of using a high-quality, compatible hose such as improved reliability, ease of installation, and long-term engine protection far outweigh the minor drawbacks, provided you source the part responsibly and address any underlying issues in the cooling system.

For most drivers, the **pros significantly outweigh the cons**, making this a straightforward and prudent maintenance task. However, if you re unsure about the installation process or suspect deeper problems, consulting a professional mechanic is the safest option.

---

### **Recommendation**

1. **Purchase the Part from a Trusted Source**

Buy the MN120339 from a reputable seller like **RockAuto, Genuine Parts Company, or your local Mitsubishi dealership** to ensure authenticity and quality. Avoid suspiciously cheap deals that may indicate counterfeit goods.

2. **Prepare Properly Before Installation**

- Gather all necessary tools and materials (coolant, clamps, anti-seize, etc.).

- Have a coolant recovery container ready if draining the system.

- Review a **vehicle-specific repair guide** (e.g., from Haynes or Chilton) or watch a **detailed YouTube tutorial** for your exact model.

3. **Inspect the Cooling System While the Hose is Removed**

Check for signs of corrosion, leaks, or wear on the water pump, radiator, hoses, and clamps. Replace any other compromised parts to prevent future issues.

4. **Follow Proper Installation Procedures**

- Ensure the new hose is securely clamped and not twisted.

- Use anti-seize on threaded connections to prevent seizing.

- Refill the coolant system with the correct type (check your owner s manual for specifications).

5. **Consider Professional Help if Needed**

If you re uncomfortable with the process or lack mechanical experience, a **mobile mechanic or dealership** can perform the replacement quickly and correctly.

6. **Monitor for Leaks Post-Installation**

After starting the engine, check for coolant leaks around the hose connections. If any are detected, tighten clamps or recheck the installation.

By following these steps, you ll maximize the lifespan of your cooling system and minimize the risk of future problems. The MN120339 replacement is a **simple yet essential maintenance task** that pays dividends in engine longevity and reliability.

Details:

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

part #: mn120339 prices

• $43.52-$75.44

specifications fueltanksysteme:

• for makes: Mitsubishi
• for years: 2004-2012
• mpn: Mn120339
• part type: Hose
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• year: 2004 2005 2006 2007 2008 2009 2010 2011 2012
• parts included: Only Part Reference 14 On The Diagram Is Included

general fueltanksysteme:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

seller fueltanksysteme:

• # reviews: 747
• city: Bay City, Michigan
• rating: 99.5%

offer fueltanksysteme:

• options: Ship-to-home
• availability: In Stock
• started: February 21, 2026
• sold: 0
• quantity: 4

payments fueltanksysteme:

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

returns fueltanksysteme:

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

shipping fueltanksysteme:

• cost: $0.00
• service: Standard
• transit: 4-9 Days
• type: Fixed
• class: Standard

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