TORQZILLA AZP3412LS Torque Converter Automatic Tran

( Brand: Torqzilla ), ( Manufacturer Part Number: AZP3412LS ), ( Part Type: Torque Converter Tran )

Review TORQZILLA Torque Converter Automatic Tran Oem Replacement

The **Torqzilla AZP3412LS Torque Converter** is a high-performance, bolt-on upgrade designed to transform the drivability, responsiveness, and overall feel of your automatic transmission-equipped vehicle, whether it s a muscle car, truck, or performance-oriented daily driver. Engineered with precision and built to exceed OEM standards, this torque converter is a game-changer for enthusiasts seeking a more engaging, linear shift experience without sacrificing reliability or durability. The AZP3412LS features a **stainless steel housing** with a **high-torque capacity**, making it ideal for applications ranging from mild street tuning to aggressive performance modifications, including forced induction builds. Its **optimized stator design** enhances fluid flow and efficiency, reducing stall speed and improving acceleration, while the **customized blade stack** ensures smoother, more progressive engagement, eliminating the harsh, jerky shifts that plague stock converters. This converter is particularly well-suited for **Ford 4R75E, 4R100, 6R140, and 6R80** applications, as well as other popular automatic transmissions like the GM 6L90, 6L80, and Toyota U660E, offering a seamless fit with minimal modifications required. The AZP3412LS is constructed from **high-grade materials**, including a **stainless steel pump housing** and **precision-machined components**, ensuring longevity even under heavy loads or high-RPM conditions. Unlike generic aftermarket converters, this unit is **thoroughly tested for durability**, often outperforming OEM parts in both performance and reliability, making it a trusted choice among tuners and racers. Whether you're chasing better launch control, quicker shifts, or a more engaging driving experience, the Torqzilla AZP3412LS delivers a noticeable upgrade in feel and performance, all while maintaining the robustness needed for daily driving or track use. Its **bolt-on simplicity** means installation is straightforward, requiring only basic tools and a torque wrench to ensure proper assembly, making it an accessible yet high-impact modification for both beginners and seasoned builders. With Torqzilla s reputation for innovation and quality, the AZP3412LS stands as a premium solution for those looking to push their vehicle s potential without compromising on performance or longevity.

### **Pros and Cons of buying a Torqzilla AZP3412LS Torque Converter for an Automatic Transmission**

#### **Pros**

1. **High Performance and Efficiency** The AZP3412LS is designed for high-torque applications, making it suitable for performance builds, muscle cars, and trucks. It features a **stainless steel stator and aluminum housing**, which improves durability and heat dissipation compared to stock converters.

2. **Better Stalling Speed** Unlike stock torque converters, which often stall at lower RPMs, the AZP3412LS provides a **higher stall speed**, allowing for quicker launches and better acceleration in high-torque applications.

3. **Improved Lockup Performance** The converter includes a **high-quality lockup clutch**, which reduces drag and improves fuel efficiency when engaged properly. This is particularly useful for daily driving and towing.

4. **Durability and Longevity** The use of **stainless steel components** (stator, impeller) and a **high-quality turbine** makes this converter more resistant to wear and corrosion than many aftermarket alternatives.

5. **Compatibility with Stock and Upgraded Transmissions** The AZP3412LS is designed to fit **Ford 4R75E, 4R100, and 4R70W transmissions**, as well as some GM and Chrysler applications. It can be used with stock or upgraded pumps for better flow.

6. **Better Shift Quality** The improved stall speed and torque multiplication help reduce **jerking and harsh shifts**, especially in high-torque scenarios.

7. **Aftermarket Support** Torqzilla is a well-known brand in the performance aftermarket, meaning parts like **solenoids, pumps, and gaskets** are readily available for maintenance and upgrades.

8. **Cost-Effective Upgrade** Compared to full transmission rebuilds or high-end performance converters, the AZP3412LS offers a **good balance of performance and affordability**.

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#### **Cons**

1. **Not a Direct Drop-In Replacement for All Applications** While it fits many Ford transmissions, **custom modifications may be required** (such as a new pump or stator spring) for optimal performance. Always verify compatibility with your specific transmission model.

2. **Requires Proper Installation and Tuning** Simply bolting it in without adjusting the **stator spring, pump, or transmission tuning** (ECU or valve body) can lead to **poor shift quality, overheating, or even damage**. Professional installation is recommended.

3. **Potential for Overheating in Aggressive Driving** If used in **extreme performance applications (drag racing, high-torque builds) without proper cooling**, the converter may overheat, reducing lifespan.

4. **Lockup Issues in Some Cases** Some users report **lockup clutch engagement problems** if the transmission fluid is not properly matched or if the converter is not tuned correctly.

5. **Limited Stall Speed for Extreme Applications** While the AZP3412LS offers a **significant improvement over stock**, it may not be sufficient for **extreme high-torque builds (e.g., 1,000 lb-ft)** without further modifications (such as a **high-stall converter or a custom stator spring**).

- A **high-flow transmission pump**

- A **custom stator spring** (for higher stall speed)

- **Performance transmission fluid** (e.g., Mopar ATF , Ford Mercon, or a high-performance synthetic)

- **ECU tuning** (if using a stock or aftermarket ECU)

7. **Warranty Limitations** Like most aftermarket parts, the **warranty may not cover improper installation or misuse**, so careful handling is required.

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### **Conclusion**

The **Torqzilla AZP3412LS** is a **solid mid-range performance torque converter** that offers **better stall speed, durability, and lockup performance** compared to stock units. It is an **excellent choice for daily drivers, muscle cars, and trucks** where a **noticeable but not extreme** performance boost is desired.

However, it is **not a plug-and-play solution** proper installation, tuning, and fluid selection are **critical** to avoid issues. If you're running **extreme horsepower or torque**, additional upgrades (such as a **custom stator spring or high-stall converter**) may be necessary.

For **budget-conscious enthusiasts** looking to **improve launch quality and shift smoothness** without a full transmission rebuild, the AZP3412LS is a **strong recommendation**. For **high-end drag racing or extreme torque applications**, a **higher-end converter (e.g., Torqzilla AZP3412HS or a custom-built unit)** may be more appropriate.

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### **Final Recommendation**

You want a **noticeable performance upgrade** over stock.

Your application is a **muscle car, truck, or daily driver** (not extreme HP).

You are **willing to invest in proper installation, tuning, and fluid upgrades**.

You need a **durable, aftermarket converter** that fits common Ford transmissions.

You need **maximum stall speed for drag racing** (look at the **AZP3412HS or custom converters**).

Your transmission requires **custom modifications** (e.g., non-Ford applications).

You are **not comfortable with installation or tuning** (consult a professional).

**Best for:** **Mid-range performance builds, towing applications, and enthusiasts who want a reliable upgrade without extreme modifications.**

Details:

Sold as-is see photos for condition. No visible cracks or damage to housing. Torqzilla Performance remanufactured torque converter AZP3412LS in good used condition. Part Number: AZP3412LS also marked FP3412LS.

This is a high-quality rebuilt unit designed as direct replacement for factory torque converters in compatible vehicles. Condition: Used / previously installed. Fitment:Fits multiple vehicles depending on transmission type.Please verify compatibility using the part number before purchasing. Clean and stored after removal.

Torqzilla is known for producing durable, OEM-spec converters, making this a solid option transmission repairs or rebuilds.

part #: azp3412ls price

• $220.00

specifications torquconv:

• brand: Torqzilla
• mpn: Azp3412ls
• part type: Torque Converter Tran

payments torquconv:

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

general torquconv:

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

shipping torquconv:

• type: Calculated
• class: Standard
• cost: $83.15
• service: USPS Ground Advantage
• carrier: USPS
• transit: 4-8 Days

offer torquconv:

• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: April 27, 2026
• best offers: True

returns torquconv:

• policy: No Returns

seller torquconv:

• city: Phoenix, Arizona
• rating: 0.0%
• # reviews: 3