DACCO 27146SGHW Auto Trans Torque Converter

( Brand: Dacco ), ( Manufacturer Part Number: 27146SGHW ), ( Part Type: Torque Tran Converter ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Automatic Transmission Torque Converter Fitment Note ), ( Years: 2014 2016 2015 2007 2008 2009 2010 2011 2012 2013 2017 2018 2019 ), ( Application: Gmc Sierra 1500 Auto Trans Torque Converter ), ( Product Name 2: Automatic Transmission Torque Converter ), ( Cs-sku: 400 )

Review DACCO Gmc Auto Trans Torque Converter fits SIERRA 1500 2007–2020

The **DACCO 27146SGHW Torque Converter** is a high-performance, direct-fit replacement designed specifically for **2007 2020 GMC Sierra 1500 models** equipped with an **automatic transmission**, ensuring seamless integration and optimal performance under demanding driving conditions. Engineered to meet or exceed OEM specifications, this torque converter is built with precision-crafted components to deliver superior power transfer, enhanced efficiency, and extended longevity compared to standard aftermarket alternatives. The **2014 and 2016 model years** are particularly well-supported, as this converter is optimized for the **6L90 6-speed automatic transmission**, a common powertrain in these trucks, ensuring compatibility with both **V8 and V6 engines** without compromising on fit or function.

Constructed from **high-grade steel and durable alloys**, the DACCO 27146SGHW features a **robust stamped housing** that resists warping and wear, while its **precision-machined impeller and turbine blades** maximize fluid dynamics for smoother shifts and improved torque response. The converter incorporates a **clutch pack with optimized friction material**, designed to handle the aggressive demands of towing, hauling, and high-performance driving while minimizing heat buildup. This attention to detail ensures that the converter maintains consistent engagement and disengagement, reducing transmission strain and preventing premature failure even under heavy loads.

For added durability, the DACCO torque converter includes a **sealed front cover** to prevent fluid leakage and contamination, while its **balanced shaft design** minimizes vibration and noise, providing a quieter, more refined driving experience. Whether you're using your GMC Sierra for **daily commuting, off-road adventures, or heavy-duty towing**, this converter is engineered to withstand the rigors of modern driving while delivering the responsiveness and reliability expected from a premium aftermarket part. Backed by DACCO s reputation for quality and backed by a **warranty for peace of mind**, this torque converter is an ideal choice for truck owners seeking a **direct, no-compromise replacement** that restores factory-like performance without the hassle of custom fitting.

### **Pros and Cons of Buying a Dacco 27146SGHW Torque Converter for a 2007 2020 GMC Sierra 1500 (Auto Transmission)**

1. **Compatibility** The Dacco 27146SGHW is specifically designed for GM 6L90 and 6L80 transmissions, which are standard in most 2007 2020 GMC Sierra 1500 models with automatic transmissions. This ensures a proper fit without modification.

2. **Improved Performance** A high-quality aftermarket torque converter can enhance acceleration, especially in heavy-duty applications, by improving stall speed and torque multiplication. This can be beneficial for towing or hauling.

3. **Durability** Dacco is a reputable brand known for manufacturing robust torque converters that can withstand high stress, reducing the risk of failure compared to OEM units in extreme conditions.

4. **Cost-Effective Upgrade** Replacing an aging or failing OEM torque converter with a Dacco unit is often more affordable than a full transmission rebuild, making it a practical solution for common transmission issues like slipping or rough shifting.

5. **Easier Installation** Since it s a direct replacement, installation is straightforward for those with basic mechanical skills or when done by a professional. No major transmission modifications are required.

6. **Extended Lifespan** A well-built torque converter like the Dacco can last significantly longer than an OEM part, reducing long-term maintenance costs and the likelihood of transmission-related problems.

7. **Better Heat Dissipation** Some aftermarket converters are designed with improved cooling properties, which can help prevent overheating in demanding driving conditions.

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1. **Potential Learning Curve** If you re not experienced with transmission work, improper installation (e.g., incorrect alignment or torque specs) could lead to further damage or premature failure.

2. **Mixed Reviews on Fitment** While the Dacco is designed for GM 6L90/6L80 transmissions, some users report minor fitment issues, such as slight clearance concerns with certain transmission housings. Double-checking your specific model year and trim is essential.

3. **Cost Compared to OEM** While cheaper than a full rebuild, a Dacco torque converter is still an investment (typically $300 $600 depending on the source). If the transmission has other issues, this may not be a standalone fix.

4. **Warranty Considerations** Some GM dealerships or transmission specialists may void warranties if aftermarket parts are installed, especially if the vehicle is still under factory coverage.

5. **Not a Cure-All** If the transmission has internal damage (e.g., worn clutches, solenoids, or fluid issues), replacing just the torque converter may not resolve shifting problems. A full diagnostic is recommended before purchase.

6. **Quality Variability** While Dacco is generally reliable, counterfeit or low-quality knockoffs may circulate in the aftermarket. Purchasing from a trusted dealer or authorized seller is crucial to avoid subpar performance.

7. **Potential for Overkill** For light-duty applications (e.g., daily driving without heavy towing), the benefits of an aftermarket converter may not be noticeable, making the upgrade less justified.

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### **Conclusion and Recommendation**

The **Dacco 27146SGHW torque converter** is a solid choice for owners of a **2007 2020 GMC Sierra 1500 with a 6L90 or 6L80 automatic transmission**, particularly if you experience:

- Slipping or weak acceleration.

- Rough shifting or delayed engagement.

- A failing or worn-out OEM converter.

- Heavy towing or off-road use where extra torque multiplication is beneficial.

- **Proceed with purchase** if you ve confirmed the converter matches your transmission type (verify with your vehicle s VIN or transmission model) and are addressing a specific issue (e.g., a known bad converter).

- **Get a professional installation** if you lack experience with transmission work to avoid misalignment or damage.

- **Check for leaks or other transmission symptoms** before buying if the transmission has internal issues, a converter replacement alone may not fix the problem.

- **Buy from a reputable source** (e.g., RockAuto, Summit Racing, or a trusted local parts store) to avoid counterfeit or damaged units.

- **Consider a transmission fluid flush** alongside the converter replacement, as old fluid can accelerate wear.

**Final Verdict:** For the right application, the Dacco converter offers a **cost-effective, performance-enhancing upgrade** that can extend the life of your transmission. However, it s not a universal fix always diagnose the root cause of transmission issues before investing. If your transmission is otherwise healthy, this is a worthwhile upgrade. If it s failing in multiple areas, weigh the cost against a full rebuild or remanufactured transmission.

Details:

Parts Geek - For 2007 2020 GMC Sierra 1500 Auto Trans Torque Converter 27146SGHW 2014 2016: Review Fitment Notes to Ensure Proper Fit condition: Remanufactured Brand: Dacco Notes: Automatic Transmission Note:Includes Heavy Duty Billet Cover 12 Month Warranty Vehicle: Engine: Transmission: 2009 2020 15005.3L V86L80, 2009 - 2013 15004.8L 15004.3L V66L80, 2009 15006.0L 2007 - 2018 15006.2L V86L80.

part #: 27146sghw price

• $453.08

specifications torquconv:

• for models: 1500, Sierra
• for makes: Gmc
• for years: 2007-2020
• brand: Dacco
• mpn: 27146sghw
• part type: Torque Tran Converter
• manufacturer warranty: 12 Month Warranty
• notes: Automatic Transmission Torque Converter Fitment Note
• years: 2014 2016 2015 2007 2008 2009 2010 2011 2012 2013 2017 2018 2019
• application: Gmc Sierra 1500 Auto Trans Torque Converter
• product name 2: Automatic Transmission Torque Converter
• cs-sku: 400

offer torquconv:

• started: April 14, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock

seller torquconv:

• city: Rockville Centre, New York
• # reviews: 328288
• rating: 98.8%

returns torquconv:

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

payments torquconv:

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

shipping torquconv:

• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• class: Standard
• transit: 2-6 Days
• cost: $0.00
• carrier: FedEx

general torquconv:

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

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