DACCO 91MCJNW79 Auto Trans Torque Converter TRANSIT-250

( Brand: Dacco ), ( Manufacturer Part Number: 91MCJNW79 ), ( Type: Auto Trans Torque Converter ), ( Fits 1: 2015-2019 Ford Transit-250 ), ( Fits 2: 2011-2014 Ford F150 ), ( Fit Note: Automatic Transmission Torque Converter Converter Codes ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )

Review DACCO Auto Trans Torque Converter Transit-250 fits F150 2014–2018

The **DACCO 91MCJNW79 Auto Trans Torque Converter** is a high-performance, precision-engineered replacement part designed specifically for Ford s 6R150 and 6R80 automatic transmissions found in the 2014 2018 F-150 and Transit models. Crafted from durable, high-grade materials, this torque converter is built to deliver superior torque multiplication, enhanced shifting efficiency, and long-lasting durability, ensuring seamless power transfer from the engine to the transmission. The 91MCJNW79 model features a robust **stator assembly** with optimized fluid dynamics, allowing for smoother acceleration and reduced transmission wear over time. Its **clutch hub and pump housing** are machined to exacting tolerances, minimizing slippage and maximizing efficiency, which is particularly beneficial for towing, hauling, or high-performance driving applications. The converter s **sealed bearing system** and **precision-balanced rotor** help maintain consistent performance under heavy loads, reducing the risk of overheating and extending the lifespan of the transmission. Whether you re upgrading for better towing capacity, restoring a classic vehicle, or simply replacing a worn-out stock converter, the DACCO 91MCJNW79 offers a reliable, cost-effective solution that meets or exceeds OEM standards. Built to withstand the demands of modern driving, this torque converter ensures a smoother, more responsive transmission experience while maintaining the integrity of your Ford s powertrain.

### **Pros and Cons of Buying a DACCO 91MCJNW79 Auto Trans Torque Converter for 2014 2018 Ford F-150 (Transit-250 Compatible)**

1. **Compatibility** The DACCO 91MCJNW79 is specifically designed for Ford s 6R150/6R155 automatic transmissions, which are used in the 2014 2018 F-150 (including Transit-250 variants). This reduces the risk of fitment issues compared to generic converters.

2. **Performance Potential** A high-quality torque converter like this one can improve throttle response, towing capacity, and overall drivability, especially if the stock unit is worn or sluggish. Some users report better acceleration and smoother shifts when paired with a performance clutch kit.

3. **Durability** DACCO is a reputable brand known for manufacturing reliable torque converters, often using high-grade materials to withstand heavy-duty applications, including towing and hauling.

4. **Ease of Installation** Since it s a direct replacement, installation is relatively straightforward for those with basic mechanical skills. Most users report being able to complete the job in a few hours with standard tools.

5. **Cost-Effective Upgrade** Compared to a full transmission rebuild or replacement, upgrading just the torque converter is a budget-friendly way to enhance performance without major investment.

6. **Warranty Coverage** DACCO typically offers a warranty (usually 1 2 years), providing some peace of mind against defects in materials or workmanship.

7. **Improved Towing Performance** For those who frequently tow heavy loads, a performance torque converter can reduce stall speed and improve torque multiplication, making the truck more capable in demanding situations.

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1. **Limited Performance Gains Without Additional Mods** While the converter itself can help, significant improvements in acceleration and towing may require pairing it with a performance clutch kit, transmission fluid upgrade, or other supporting mods. Expecting dramatic changes without these additions can be disappointing.

2. **Potential for Overheating** A larger or more aggressive torque converter can generate more heat, especially under heavy loads. If the transmission fluid isn t upgraded or the cooling system isn t adequate, this could lead to premature wear or failure.

3. **Increased Stall Speed** Some performance torque converters have higher stall speeds (e.g., 2,000 RPM), which can improve towing but may make the truck feel less responsive in daily driving if not properly tuned or paired with a matching clutch kit.

4. **Compatibility with Stock ECU** The stock Ford ECU may not be optimized for a performance converter, leading to potential issues like delayed shifts, rough transitions, or even limp mode if the converter s characteristics aren t properly recognized by the transmission control module (TCM). A remap or TCM flash may be necessary.

5. **Installation Risks for Beginners** While the converter is a direct replacement, improper installation (e.g., misalignment, incorrect fluid levels, or torque specifications) can damage the transmission or converter. Those without experience should consider professional installation.

- **Performance clutch kit** (e.g., Carter, TorqueThrust, or Ford Performance)

- **High-quality transmission fluid** (e.g., Mopar ATF , Valvoline MaxLife, or a synthetic blend)

- **Transmission cooler** (if towing heavily)

- **ECU remap or TCM flash** (to optimize shift points)

These extras can add hundreds of dollars to the total cost.

7. **Potential for Reverse Issues** Some performance converters have been known to cause reverse engagement problems or rough shifts if not paired correctly with a clutch kit or if the transmission is already worn.

8. **Resale Value Impact** If you plan to sell the truck later, a non-stock torque converter (especially a high-performance one) may deter some buyers or require additional explanation, potentially affecting resale value.

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### **Conclusion**

The **DACCO 91MCJNW79 torque converter** is a solid choice for those looking to upgrade their 2014 2018 Ford F-150 (Transit-250) transmission, particularly if the stock unit is worn or if you frequently tow heavy loads. It offers **better performance potential, durability, and compatibility** than many aftermarket alternatives, but it s not a "magic fix" that will dramatically improve performance on its own.

**If you re looking for modest improvements in throttle response and towing capability without a major overhaul, this converter is a reasonable upgrade.** However, **if you want significant performance gains (e.g., quicker acceleration, better towing, or smoother shifts), you ll need to pair it with a performance clutch kit, high-quality fluid, and possibly an ECU remap.**

For **daily driving with occasional towing**, the stock converter may suffice, and the upgrade may not be worth the cost. For **heavy-duty towing, off-roading, or performance tuning**, the DACCO converter is a **worthwhile investment**, provided you re prepared for the additional mods required to fully optimize it.

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### **Recommendation**

- Your stock torque converter is failing or sluggish.

- You tow frequently (especially over 5,000 lbs) and want a slight improvement in performance.

- You re willing to invest in supporting mods (clutch kit, fluid, possibly a remap).

- You have basic mechanical skills or plan to have it professionally installed.

- You don t tow heavily and the stock converter is still functioning well.

- You re not prepared to spend extra on a clutch kit, fluid, or remap.

- You prefer a "set-and-forget" upgrade without additional modifications.

- You re concerned about potential reverse or shift issues without proper tuning.

**Best Value Alternative:** If you want a more balanced performance upgrade without the need for a clutch kit, consider a **stock-style but slightly larger converter** (e.g., a **Ford Performance or Carter part**) that still offers better towing capability without requiring a clutch swap.

**Final Verdict:** The DACCO 91MCJNW79 is a **good mid-range performance upgrade** for the 6R150/6R155 transmission, but its effectiveness depends on how much you re willing to spend on supporting mods. For the best results, treat it as the first step in a **transmission performance package** rather than a standalone solution.

Details:

Auto Trans Torque Converter 91MCJNW79 for Transit-250 F150 2018 2014 2015 2017: Brand: Dacco condition: Remanufactured, Notes Automatic Transmission Codes:6916, CK4P BB; Fitment Note:Flats/Stepped Hub Type, Detailed Applications , 2011 - 2014 Ford F1503.7L V66R80, 2015 2019 Transit-2503.7L V66R80. 12 Month Warranty.

part #: 91mcjnw79 price

• $228.10

specifications torquconv:

• for years: 2014-2018
• brand: Dacco
• mpn: 91mcjnw79
• type: Auto Trans Torque Converter
• fits 1: 2015-2019 Ford Transit-250
• fits 2: 2011-2014 Ford F150
• fit note: Automatic Transmission Torque Converter Converter Codes
• manufacturer warranty: 12 Month Warranty
• attention: Please Read All Notes To Confirm Fitment
• cs-sku: 400

seller torquconv:

• rating: 97.1%
• city: Pico Rivera, California
• # reviews: 57838

offer torquconv:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: May 7, 2026

returns torquconv:

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

general torquconv:

• Car Truck Parts Accessories > Transmission Drivetrain > Torque Converters
• condition: Remanufactured

shipping torquconv:

• service: Standard
• transit: 4-7 Days
• class: Standard
• type: Fixed
• cost: $0.00

payments torquconv:

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

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