DACCO 78771JHPX Auto Trans Torque Converter
fits make: Infiniti. year: 2006–2010.
( Brand: Dacco ), ( Manufacturer Part Number: 78771JHPX ), ( Part Type: Torque Tran Converter ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Automatic Transmission Torque Converter Fitment Note ), ( Years: 2006 2007 2008 2009 2010 ), ( Application: Infiniti M35 Auto Trans Torque Converter ), ( Product Name 2: Automatic Transmission Torque Converter ), ( Cs-sku: 400 ), ( Country Of Origin: China )
Review DACCO Infiniti Auto Trans Torque Converter fits M35 2006–2010
The **DACCO 78771JH-PX Torque Converter** is a high-performance, direct-fit replacement designed specifically for the **2006 2010 Infiniti M35** with an **automatic transmission**, ensuring seamless power transfer and optimal drivetrain efficiency. Engineered to meet or exceed OEM specifications, this torque converter features a **robust, high-capacity impeller and turbine assembly**, constructed from durable materials to withstand the intense heat and torque demands of the M35 s powerful V6 engine. The **precision-machined stator and one-way clutch** enhance fluid circulation, improving throttle response and fuel economy while reducing transmission wear over time. Its **smooth engagement and disengagement** characteristics are achieved through a **high-quality fluid coupling system**, which minimizes slippage and maximizes power delivery, making it ideal for both daily driving and spirited acceleration. The **tightly sealed housing** prevents fluid leakage, ensuring longevity and reliability, while the **compatible bolt pattern and mounting points** guarantee a perfect fit without modification. Whether you're restoring an original M35 or upgrading an existing transmission, this torque converter delivers **superior performance, durability, and compatibility**, restoring the vehicle s factory-intended driving dynamics with ease.
### **Pros and Cons of Buying a DACCO 78771JH-PX Torque Converter (2006 2010 Infiniti M35, Automatic Transmission)**
#### **Pros**
1. **OEM Quality and Fitment**
- The DACCO 78771JH-PX is an aftermarket torque converter designed to match the specifications of the original unit used in the 2006 2010 Infiniti M35. It is built to the same torque capacity and stall speed tolerances, ensuring proper performance and drivability.
2. **Improved Durability and Performance**
- Many aftermarket torque converters, including DACCO units, are engineered with stronger materials and better balancing than stock converters. This can reduce slippage, improve acceleration, and extend the life of the transmission fluid and clutch pack.
3. **Compatibility with Upgrades**
- If you plan to modify your M35 (e.g., forced induction, larger flywheel, or performance tuning), a high-quality torque converter like the DACCO can handle increased torque loads better than the stock unit, reducing the risk of failure.
4. **Cost-Effective Replacement**
- Replacing a worn-out stock torque converter with a DACCO unit is often more affordable than purchasing a full transmission or a rebuilt unit. It s also a simpler repair compared to transmission overhauls.
5. **Warranty and Reliability**
- DACCO is a reputable brand in the aftermarket performance parts industry, offering warranties on their torque converters. A well-maintained DACCO unit should last as long as, if not longer than, the stock converter in ideal conditions.
6. **Easier Installation**
- Since it is a direct replacement, installing the DACCO torque converter requires minimal additional modifications. It can be swapped in without needing a full transmission rebuild, saving time and labor costs.
7. **Better Fluid Flow and Cooling**
- Some aftermarket torque converters are designed with improved impeller and stator designs, which can enhance fluid circulation and cooling, reducing the risk of overheating in aggressive driving conditions.
---
#### **Cons**
1. **Potential for Improper Stall Speed**
- While DACCO converters are generally well-tuned, some aftermarket units may not match the exact stall speed of the stock converter. If the stall speed is too high, it can cause harsh shifting or stalling under load. If too low, it may result in sluggish acceleration. Tuning (via ECU or transmission control module adjustments) may be necessary.
2. **Quality Control Variability**
- Like all aftermarket parts, there is a risk of receiving a poorly manufactured or mismatched unit, especially if purchased from a less reputable seller. Always buy from authorized dealers or trusted online retailers to minimize this risk.
3. **Requires Proper Fluid and Maintenance**
- A torque converter, even a high-quality one, relies on clean transmission fluid to function properly. Neglecting fluid changes or using low-quality fluid can reduce its lifespan. The DACCO converter may require more frequent fluid changes if used in performance applications.
4. **Possible Voiding of Warranty**
- If your M35 is under factory warranty, installing an aftermarket torque converter may void the transmission warranty. Always check with the dealership or manufacturer before proceeding.
5. **Installation Risks**
- While straightforward, improper installation (e.g., misalignment, incorrect torque specs) can lead to premature failure. If you re not experienced with transmission work, it s best to have it installed by a professional.
6. **Limited Long-Term Data**
- Unlike OEM parts, aftermarket torque converters may not have decades of real-world data on longevity, especially in extreme conditions (e.g., heavy towing, aggressive driving, or high-performance modifications).
7. **Potential for Overheating in Extreme Use**
- If the vehicle is frequently driven in stop-and-go traffic or subjected to high torque loads without proper cooling, the torque converter (and transmission) may overheat. This is more of a general transmission issue than a specific flaw with the DACCO unit but is worth considering.
---
### **Conclusion**
The **DACCO 78771JH-PX torque converter** is a solid aftermarket option for the 2006 2010 Infiniti M35, offering improved durability, better performance, and cost-effectiveness compared to the stock unit. It is particularly beneficial for drivers who plan to modify their vehicles or want a more robust replacement for a failing original converter.
However, it is not without drawbacks. The primary concerns revolve around ensuring proper stall speed, maintaining the transmission fluid, and verifying the quality of the unit at purchase. For most owners, the benefits outweigh the risks, especially if installed and maintained correctly.
---
### **Recommendation**
If you are replacing a worn-out torque converter in your M35 or upgrading for performance, the **DACCO 78771JH-PX is a strong choice**. Here s how to proceed:
1. **Verify Compatibility** Double-check that this specific part number matches your vehicle s transmission (Jatco JF5060E in the M35).
2. **Purchase from a Trusted Source** Buy from an authorized DACCO dealer or a well-reviewed online retailer to ensure authenticity and quality.
3. **Consider Tuning** If you notice harsh shifting or stall speed issues after installation, consult a transmission specialist or tuner to adjust the converter s performance via the transmission control module.
4. **Use High-Quality Fluid** Switch to a premium transmission fluid (e.g., Mobil 1 Synthetic, Valvoline MaxLife) and follow the manufacturer s recommended change intervals.
5. **Professional Installation** If you re not experienced with transmission work, have the converter installed by a mechanic familiar with Jatco transmissions.
6. **Monitor Performance** Keep an eye on transmission behavior (shifting, overheating, fluid condition) and address any issues promptly.
For most M35 owners, the DACCO torque converter will provide a noticeable improvement in drivability and longevity, making it a worthwhile investment. However, if you re on a tight budget or prefer minimal risk, a rebuilt stock converter from a transmission shop could also be a viable alternative.
Details:
specifications torquconv:
- for makes: Infiniti
- for years: 2006-2010
- brand: Dacco
- mpn: 78771jhpx
- part type: Torque Tran Converter
- manufacturer warranty: 12 Month Warranty
- notes: Automatic Transmission Torque Converter Fitment Note
- years: 2006 2007 2008 2009 2010
- application: Infiniti M35 Auto Trans Torque Converter
- product name 2: Automatic Transmission Torque Converter
- cs-sku: 400
- country of origin: China
payments torquconv:
- wallet: Apple-pay
- other
- credit card: Discover
general torquconv:
- Car Truck Parts Accessories > Transmission Drivetrain > Torque Converters
- condition: Used
returns torquconv:
- paid by: Buyer
- policy: Returns Accepted
- time: 30 Days
offer torquconv:
- options: Ship-to-home
- sold: 0
- availability: In Stock
- quantity: 1
- started: March 11, 2026
shipping torquconv:
- cost: $0.00
- transit: 2-6 Days
- service: FedEx Ground / FedEx Home Delivery, USPS Ground Advantage, FedEx 2Day
- carrier: FedEx, USPS
- type: Fixed
- class: Standard, Expedited
seller torquconv:
- # reviews: 3890
- city: Independence, Oregon
- rating: 99.5%
Dacco 78771JHPX Is Similar To:
- 359 Dacco Remanufactured Auto Trans 847338020238 (36.8% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(October 24th, 2017)
- 390 Dacco Automatic Transmission Torque 847338020481 (40.7% similar) Every converter goes through the following five-step process to ensure highest level of quality. 22LBS how does Dacco build a quality torque converter. Automatic transmission torque converter by Dacco. Final inspection functional testing for leaks, run out, end play and balance:custom built leak ...(December 30th, 2017)
- 400 Dacco Automatic Transmission Torque 847338020511 (40.7% similar) How does Dacco build a quality torque converter. Every converter goes through the following five-step process to ensure highest level of quality. Final inspection functional testing for leaks, run out, end play and balance:custom built leak check machines require human machine approval to pass with ...(December 30th, 2017)
- 514 Dacco Remanufactured Auto Trans 847338020542 (36.8% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(October 21st, 2017)
- 520aa Dacco Transmission Parts Torque Converter (49.6% similar) Orders take hours processing time. Typically all parts have a 1 year manufacturer limited warranty...(May 22nd, 2018)
- 524 Dacco Remanufactured Auto Trans 847338020580 (36.8% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(November 27th, 2017)
- 526 Dacco Remanufactured Auto Trans 847338020597 (36.8% similar) Shipping labels may only be applied to a separate, outer box. Vehicles sold outside of the USA may be different, even if they have same make and model name...(November 27th, 2017)
- 564 Dacco Remanufactured Auto Trans 847338020696 (36.8% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(September 10th, 2017)
- 568 Dacco Remanufactured Auto Trans 847338020740 (36.8% similar) Vehicles sold outside of the USA may be different, even if they have same make and model name. Shipping labels may only be applied to a separate, outer box...(October 21st, 2017)
- 582y-90 Dacco Torque Converter Dodge Neon (41.1% similar) 60 bolt CIRCLE4 mounting pads 90 degrees, 10MM x Dacco 582Y-90 torque converter re-manufactured by DACCO10 DIAMETER8. 5MILLED flats on hub pilot 0LQUESTIONS. I can only help if the vehicle is original and not been modified...(September 2nd, 2018)
- 583ws Dacco Transmission Parts Torque (35% similar) Typically all parts have a 1 year manufacturer limited warranty. Orders take hours processing time...(September 16th, 2017)
