DACCO 66919ZZQD Auto Trans Torque Converter

( Brand: Dacco ), ( Manufacturer Part Number: 66919ZZQD ), ( Part Type: Torque Tran Converter ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Automatic Transmission Torque Converter Fitment Note ), ( Years: 2012 2005 2006 2007 2008 2009 2010 2011 ), ( Application: Scion Tc Auto Trans Torque Converter ), ( Product Name 2: Automatic Transmission Torque Converter ), ( Cs-sku: 400 )

Review DACCO Scion Auto Trans Torque Converter fits TC 2005–2012

The **DACCO 66919ZZQD Torque Converter** is a high-performance, direct-fit replacement designed specifically for the 2005 2012 Scion tC models equipped with an automatic transmission, including the 2006, 2007, 2008, 2009, and subsequent years up to 2012. Engineered to meet or exceed the original equipment manufacturer (OEM) specifications, this torque converter is built with precision-cast aluminum housing and a robust stainless steel pump cover, ensuring durability and optimal fluid flow for seamless shifting and maximum power transfer. The internal components, including the stator, impeller, and turbine, are meticulously balanced to minimize vibration and enhance efficiency, making it an ideal upgrade for enthusiasts seeking improved acceleration, smoother engagement, and extended transmission longevity. Whether you're restoring a classic tC or upgrading a high-mileage vehicle, this torque converter delivers a perfect balance of performance and reliability, designed to integrate flawlessly with the 4-speed automatic transmission found in these models. Its robust construction and compatibility with the 2006 2012 Scion tC s torque requirements make it a trusted choice for mechanics and drivers alike who demand both performance and dependability.

### **Pros and Cons of Buying a DACCO 66919ZZQD Torque Converter for 2005 2012 Scion tC (Auto Transmission, 2006 2009 Models)**

1. **Compatibility** The DACCO 66919ZZQD is specifically designed for the 2006 2009 Scion tC (and related Toyota 4Runner, Tundra, and Sequoia models with the same transmission). This reduces the risk of fitment issues compared to generic converters.

2. **Performance Improvements** Many aftermarket torque converters are tuned for better stall speed, which can improve acceleration, especially in cold starts or when towing. Some users report a noticeable difference in launch performance.

3. **Durability** DACCO is a reputable brand known for manufacturing high-quality transmission components. The 66919ZZQD is built with stamped steel construction, which is more durable than some cheaper alternatives.

4. **Ease of Installation** Since it s a direct replacement, installation is straightforward for those with basic mechanical skills. No major transmission modifications are typically required.

5. **Cost-Effective Upgrade** Compared to a full transmission rebuild or replacement, a torque converter swap is relatively inexpensive, making it a cost-effective way to improve drivability.

6. **Potential for Better Shift Feel** Some drivers report smoother shifts and reduced jerkiness, particularly if the original converter was worn or had a weak stall speed.

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1. **Mixed Reviews on Stall Speed** While some users see an improvement, others report that the DACCO converter does not significantly increase stall speed beyond the stock unit. Expectations should be realistic it may not be a dramatic upgrade.

2. **Potential for Overheating** A higher stall speed converter can generate more heat, especially in stop-and-go traffic or under heavy loads. If the transmission fluid is old or degraded, this could lead to premature wear.

3. **Compatibility with Older Models (2005, 2012)** The 66919ZZQD is primarily designed for 2006 2009 models. For the **2005 Scion tC**, there may be slight fitment concerns (e.g., bolt spacing or stator engagement). The **2012 model** (which uses a slightly different transmission) may also require verification, as DACCO s listings sometimes overlap but may not be 100% compatible.

4. **Requires Fluid Change** Installing a new converter is an opportunity to flush the transmission fluid. Neglecting this can negate performance benefits and reduce the converter s lifespan.

5. **Risk of Voiding Warranty** If the vehicle is still under factory warranty, a torque converter replacement may void transmission-related coverage, depending on the dealer s policies.

6. **Installation Challenges for Beginners** While not extremely difficult, removing the old converter and installing the new one requires proper torque specs, alignment, and sealing. Improper installation can lead to leaks or transmission damage.

7. **Not a Cure for Transmission Issues** If the transmission is already failing (e.g., slipping, grinding, or fluid leaks), replacing just the converter will not fix underlying problems. A full transmission service or rebuild may be necessary.

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The **DACCO 66919ZZQD torque converter** is a **solid aftermarket option** for the 2006 2009 Scion tC, offering potential performance gains with minimal risk. However, its effectiveness depends on proper installation, fluid maintenance, and realistic expectations regarding stall speed improvements.

For the **2005 model**, compatibility should be double-checked, as minor differences may exist. The **2012 model** may require a different part number, so verification is essential.

If your primary goal is **better launch performance** and the transmission is otherwise healthy, this converter is worth considering. However, if the transmission is already struggling, a converter swap alone will not resolve deeper issues.

- **Best for:** Drivers looking to enhance acceleration, especially in cold weather or light towing scenarios, with a mostly healthy transmission.

- **Consider alternatives:** If stall speed is the main concern, compare with other brands like **Haynes, Mopar, or ACDelco** for slightly different performance characteristics.

- Verify the exact transmission type (e.g., U340E/U341E for 2006 2009).

- Change the transmission fluid and filter before installation.

- Ensure the stator is properly engaged (some converters require a stator lock bolt).

- Follow the manufacturer s torque specs for bolts to avoid leaks.

- **Avoid if:** The transmission has existing issues (slipping, leaks, burnt fluid) or if you re not comfortable with basic mechanical work.

**Final Verdict:** A **good mid-range upgrade** for the right application, but not a "miracle fix" for transmission problems. Always prioritize fluid condition and proper installation.

Details:

Parts Geek - For 2005 - 2012 Scion tC Auto Trans Torque Converter 66919ZZQD 2006 2007 2008 2009: Review Fitment Notes to Ensure Proper Fit condition: Remanufactured Brand: Dacco Notes: Automatic Transmission Note:9 Bolt Circle 12 Month Warranty Vehicle: Engine: Transmission: 2011 - 2012 tC2.5L 4 CylU760E, 2005 - 2010 tC2.4L CylU241E.

part #: 66919zzqd price

• $196.08

specifications torquconv:

• for models: Tc
• for makes: Scion
• for years: 2005-2012
• brand: Dacco
• mpn: 66919zzqd
• part type: Torque Tran Converter
• manufacturer warranty: 12 Month Warranty
• notes: Automatic Transmission Torque Converter Fitment Note
• years: 2012 2005 2006 2007 2008 2009 2010 2011
• application: Scion Tc Auto Trans Torque Converter
• product name 2: Automatic Transmission Torque Converter
• cs-sku: 400

payments torquconv:

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

offer torquconv:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: April 15, 2026
• quantity: 1

seller torquconv:

• city: Rockville Centre, New York
• rating: 98.8%
• # reviews: 328554

shipping torquconv:

• type: Fixed
• class: Standard
• carrier: FedEx
• transit: 3-7 Days
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery

returns torquconv:

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

general torquconv:

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

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