ALLISON 6311402344 Transmission 106 2100HS

( Brand: Allison ), ( Manufacturer Part Number: 6311402344 ), ( Items Included: Torque Converter ), ( Vintage Part: No ), ( Type: Automatic Transmission ), ( Vin Donor: 1fvacwdu8ghhn5864 ), ( Manufacturer Warranty: 3 Months ), ( Country Of Origin: United States ), ( Salesperson: Ca )

Review ALLISON Oem Transmission Assembly #6311402344 Freightliner 106 fits M2 2017

The **Allison Transmission 6311402344** is a high-performance, fully electronic transmission designed specifically for the **2017 Freightliner M2 106** and **M2 2100HS** models, engineered to deliver unmatched durability, efficiency, and reliability in demanding commercial trucking applications. This transmission is a **6-speed automatic** with a **torque converter** and **Eaton s proven Allison technology**, optimized to handle the rigorous demands of long-haul freight, regional hauling, and heavy-duty over-the-road operations. Built with a robust **cast aluminum housing** and precision-machined internal components, the 6311402344 ensures seamless power transfer while minimizing wear and tear, even under extreme loads and prolonged operation. Its **electronic control module (ECM)** integrates seamlessly with the truck s onboard diagnostics, providing real-time monitoring of transmission health, shift quality, and fuel efficiency critical features for fleet managers looking to maximize uptime and reduce maintenance costs.

One of the standout features of this transmission is its **adaptive shift logic**, which dynamically adjusts shift points based on load, speed, and driving conditions, enhancing both comfort and fuel economy. The **6311402344** also incorporates **Allison s TorqueContr** technology, which optimizes torque delivery for smoother acceleration and reduced stress on the drivetrain, particularly beneficial in heavy-duty applications where sudden load changes are common. Additionally, the transmission is equipped with **Allison s exclusive ShiftAssist**, a feature that enhances shift quality by reducing jerkiness and improving overall ride comfort for the driver. For enhanced protection, it includes **Allison s TorqueGuard**, which prevents damage from sudden overloads by automatically adjusting shift points to protect the transmission from excessive stress.

Designed for **long-term reliability**, the 6311402344 utilizes **high-strength materials** and **precision-engineered gears**, ensuring minimal friction and heat buildup, which extends the life of the transmission and reduces the need for costly repairs. The transmission s **compact yet robust design** allows for easy installation in the Freightliner M2 s drivetrain configuration, while its **sealed and filtered lubrication system** keeps internal components clean and well-lubricated, even in dusty or harsh operating environments. Compatible with **Allison s advanced transmission fluids**, such as **Allison TES 380**, this unit is engineered to perform optimally in extreme temperatures, from freezing cold to scorching heat, ensuring consistent operation regardless of climate conditions.

For fleet operators and independent truckers, the **Allison 6311402344** represents a **cost-effective, high-performance solution** that balances durability with efficiency. Whether hauling heavy freight across interstates or navigating urban delivery routes, this transmission delivers **superior shift responsiveness, fuel savings, and reduced maintenance intervals**, making it an ideal choice for those who demand the best in commercial trucking reliability. With **Allison s reputation for innovation and engineering excellence**, this transmission is not just a component it s a **critical asset** that helps keep your Freightliner M2 106 or 2100HS running at peak performance for years to come.

### **Pros and Cons of Buying a 2017 Freightliner M2 106 with Allison 6311402344 Transmission (2100HS)**

#### **Pros**

1. **Reliability of the Allison Transmission (6311402344)**

- The **Allison 2100HS** is a well-regarded heavy-duty transmission designed for durability in long-haul and regional trucking applications. It is known for smooth shifting, strong torque handling, and robust construction.

- The **6311402344** part number refers to a specific transmission model, likely a **6-speed automatic** with **electronic control (EEC)** and **hydraulic shifting**, which provides better fuel efficiency and reduced wear compared to older mechanical transmissions.

- Allison transmissions are widely used in Class 8 trucks and are backed by a strong service network, making repairs and maintenance more accessible.

2. **Freightliner M2 106 Chassis Strength**

- The **M2 106** is a **medium-duty to heavy-duty** truck chassis built for durability, making it suitable for **regional hauling, construction, or specialized applications**.

- It features a **strong frame, robust suspension, and reliable drivetrain components**, which can handle heavy loads and rough road conditions better than some lighter-duty trucks.

- The **106-inch wheelbase** provides a good balance between maneuverability and payload capacity, making it versatile for different payloads.

3. **Fuel Efficiency Improvements (2017 Model Year)**

- The **2017 model year** likely includes **emissions-compliant engines** (such as the **Cummins ISB6.7 or Detroit DD15**), which are more fuel-efficient than older models while still delivering strong torque.

- The **Allison 2100HS** is optimized for **better fuel economy** compared to older transmissions, reducing operating costs over time.

4. **Resale Value and Market Availability**

- Freightliner trucks, especially those with **Allison transmissions**, hold their value reasonably well in the used market due to their reputation for reliability.

- The **M2 106** is a common chassis, meaning **parts and labor costs** are widely available, reducing downtime for repairs.

5. **Versatility in Applications**

- The **M2 106** can be configured for **dry van, flatbed, refrigerated, or specialized trailers**, making it a flexible purchase for businesses with varying needs.

- The **Allison transmission s torque converter lockup** helps improve fuel efficiency in steady-speed applications, such as long-haul trucking.

---

#### **Cons**

1. **Age of the Vehicle (2017 Model Year)**

- At **7-8 years old**, this truck is **approaching the end of its optimal lifespan**, especially if it has **high mileage (typically 500,000 miles)**.

- **Wear and tear** on major components (engine, transmission, drivetrain, suspension) may be more pronounced, increasing the risk of **unexpected breakdowns**.

- **Electronic systems** (EEC, ABS, engine control modules) may become outdated, requiring **software updates or compatibility issues** with newer diagnostics tools.

2. **Potential for High Maintenance Costs**

- **Transmission (Allison 2100HS):** While durable, **fluid changes, shift solenoids, and torque converter issues** can become costly over time. Some owners report **electronic control module failures** requiring replacement.

- **Engine:** Older **Cummins ISB6.7 or Detroit DD15** engines may develop **carbon buildup, turbocharger wear, or fuel system issues**, especially if maintenance records are incomplete.

- **Suspension & Steering:** **Air ride systems, shocks, and tie rods** may need replacement, increasing operational costs.

- **Brakes & Exhaust:** **Brake linings, drums, and exhaust manifolds** are common wear items that may need frequent replacement.

3. **Fuel and Emissions Compliance Risks**

- The **2017 model year** may still be **EPA 2010 or 2013 compliant**, meaning it could face **future emissions regulations** that may require **expensive retrofits** (e.g., **DEF system upgrades, DPF cleaning, or engine remanufacturing**).

- **Diesel exhaust fluid (DEF) requirements** have become more stringent, and older trucks may struggle with **DEF consumption rates**, adding operational costs.

4. **Driver Comfort and Modern Features**

- **Cabin technology** may be **outdated** compared to newer models (e.g., lack of **advanced telematics, driver-assist features, or ergonomic seating**).

- **Noise and vibration levels** could be higher than in newer trucks, affecting driver fatigue over long hauls.

- **Infotainment and connectivity** options are likely **limited**, which may be a drawback for fleet managers tracking real-time performance.

5. **Financing and Depreciation Concerns**

- **Used truck financing** for a **7-year-old vehicle** may come with **higher interest rates** or **shorter loan terms** due to perceived risk.

- **Depreciation** will continue, meaning the truck s value will drop further over time, reducing long-term ROI.

- **Insurance costs** may be higher than for a newer truck, especially if the vehicle has **high mileage or a history of accidents**.

6. **Potential for Hidden Mechanical Issues**

- Without a **full service history**, there is a risk of **undisclosed repairs** (e.g., **transmission rebuilds, engine overhauls, or frame cracks**).

- **Rust and structural integrity** should be inspected, especially if the truck was operated in **salted or humid climates**.

- **Electrical gremlins** (e.g., **faulty sensors, wiring harness failures**) are common in older trucks and can be difficult to diagnose.

---

### **Conclusion**

- You are looking for a **reliable, medium-heavy-duty truck** for **regional hauling or specialized work**.

- The truck has **low to moderate mileage (under 400,000 miles)** and a **complete service history**.

- You are willing to **budget for potential maintenance and upgrades** in the next few years.

- The **purchase price is significantly lower** than a newer model, allowing for better initial ROI.

- The truck has **high mileage (500,000 miles)** or **unknown maintenance history**, the **risk of costly repairs increases**.

- You need **modern fuel efficiency, emissions compliance, or advanced driver aids**, a newer truck may be more suitable.

- Your budget allows for **a newer model**, investing in a **2020 Freightliner with updated Allison transmission (e.g., 2100HS or 2100HS ) and emissions-compliant engine** would reduce long-term risks.

---

### **Recommendation**

- **Get a pre-purchase inspection (PPI) from a trusted truck mechanic** to assess **transmission condition, engine health, and structural integrity**.

- **Verify service records** for **transmission fluid changes, engine maintenance, and major repairs**.

- **Negotiate the price** based on **mileage, condition, and any needed repairs** (aim for **$30,000 $50,000** depending on location and demand).

- **Budget for a reserve fund** (10 15% of purchase price) for **unexpected repairs** in the first year.

- A **2020 2023 Freightliner M2 with an Allison 2100HS transmission** offers **better fuel efficiency, emissions compliance, and longer warranty coverage**.

- If financing, **leasing or a longer-term loan** may be more cost-effective than buying used.

- **Ideal for:** A **fleet owner or operator** who needs a **reliable, medium-duty workhorse** for **local or regional routes** where **high mileage isn t a primary concern**.

- **Avoid if:** You require **long-haul efficiency, minimal maintenance, or plan to keep the truck for 10 years**.

This truck can be a **good value purchase** if **properly inspected and maintained**, but it is **not a long-term "set it and forget it" solution**. If budget allows, a **newer model with updated technology** would offer **lower risk and better efficiency** in the long run.

Details:

1:Allison model Or Serial Number. All parts are used unless noted otherwise and may have scratches or imperfections. All parts come with a 90 day warranty.

part #: 6311402344 prices

• $308.79-$2350.00

specifications autotransmissionsgo:

• for models: M2
• for makes: Freightliner, Allison
• for years: 2017
• brand: Allison
• mpn: 6311402344
• items included: Torque Converter
• vintage part: No
• type: Automatic Transmission
• vin donor: 1fvacwdu8ghhn5864
• manufacturer warranty: 3 Months
• country of origin: United States
• salesperson: Ca

offer autotransmissionsgo:

• quantity: 1
• started: June 5, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home

general autotransmissionsgo:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

shipping autotransmissionsgo:

returns autotransmissionsgo:

• policy: No Returns

seller autotransmissionsgo:

• # reviews: 782
• rating: 100.0%
• city: Wagener, South Carolina

payments autotransmissionsgo:

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

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