CIRCLE D SPECIALTIES 07-13-04-4C Rpm Pro Torque Converter 6L80E 3600-3800 245MM

( Brand: Circle D Specialties ), ( Manufacturer Part Number: 07-13-04-4C ), ( Part Type: Torque Converter ), ( Manufacturer Warranty: 1 Year ), ( Stall Speed: 3600-3800 ), ( Universal Fitment: No ), ( Country Of Origin: United States ), ( Performance Part: Yes )

Review CIRCLE D SPECIALTIES Circlespecialties 3600-3800 Rpm 245mm Pro Series Torque Converter

The **Circle Specialties 07-13-04-4C 6L80E Torque Converter** is a high-performance, precision-engineered unit designed specifically for Ford s legendary 6-speed automatic transmission, the 6L80E, making it an indispensable component for enthusiasts and professional mechanics seeking superior power delivery and durability. Built to exacting standards, this torque converter features a robust **4-clutch (4C) design**, which enhances torque multiplication and smooth engagement, ensuring seamless power transfer from the engine to the drivetrain even under the most demanding conditions. The **3600 3800 RPM stall speed range** strikes an optimal balance between responsiveness and efficiency, allowing for aggressive launches while maintaining reliability in both street and track applications. With a **245mm (9.65-inch) diameter**, this converter offers a generous stall torque capacity, making it ideal for high-horsepower applications, including naturally aspirated and forced-induction engines, without compromising on durability.

Crafted from premium materials, the **07-13-04-4C** incorporates a **high-strength aluminum housing** reinforced with precision-machined components to withstand extreme torque loads and prolonged use under heavy loads. The **6L80E-specific stator and pump assembly** ensures seamless fluid flow, reducing slippage and improving overall efficiency, while the **optimized turbine and impeller design** minimizes drag and maximizes power transfer. This torque converter is particularly well-suited for **Ford vehicles from model years 2007 to 2013**, including the F-150, Mustang, Expedition, and other platforms equipped with the 6L80E transmission, though its robust construction makes it a versatile choice for aftermarket builds and performance upgrades. Whether paired with a supercharged EcoBoost engine, a turbocharged V8, or a high-revving naturally aspirated setup, this converter delivers **exceptional torque multiplication, improved shift quality, and enhanced acceleration**, making it a standout choice for those pushing the limits of their vehicle s performance.

Beyond its technical prowess, the **Circle Specialties 07-13-04-4C** is engineered with **ease of installation** in mind, featuring a **direct bolt-on compatibility** with the 6L80E transmission, reducing installation time and potential for error. The converter s **precisely balanced components** and **high-quality seals** ensure longevity, even under extreme conditions, while its **durable clutch packs** and **reinforced housing** provide confidence in both daily driving and spirited performance applications. Whether you're a professional tuner fine-tuning a high-output engine or a weekend warrior looking to unlock the full potential of their truck or muscle car, this torque converter represents a **cutting-edge solution** that bridges the gap between stock reliability and extreme performance. With Circle Specialties reputation for **innovation and precision**, the **07-13-04-4C 6L80E torque converter** stands as a **must-have upgrade** for anyone serious about maximizing power, responsiveness, and drivability in their Ford-powered vehicle.

### **Pros and Cons of buying a Circle Specialties 07-13-04-4C 6L80E 3600-3800 RPM Pro Torque Converter**

1. **Compatibility with Ford 6L80E Transmission** This torque converter is specifically designed for the Ford 6L80E automatic transmission, ensuring proper fitment and performance. The 6L80E is widely used in trucks, SUVs, and some muscle cars, making this converter a versatile choice for those vehicles.

2. **Optimized for 3600-3800 RPM Stall Speed** The 3600-3800 RPM stall speed is ideal for performance applications, particularly in trucks and towing setups. A higher stall speed improves acceleration, launch performance, and overall drivability, especially when paired with a performance engine or a heavy-duty application.

3. **Pro-Grade Construction** Circle Specialties is known for high-quality torque converters, and this model appears to be built with durable materials, including a robust stator and clutch assembly. The use of a "Pro" designation suggests enhanced performance and reliability compared to stock or basic aftermarket converters.

4. **Improved Towing and Hauling Capabilities** For vehicles used for towing or hauling, a torque converter with a higher stall speed can reduce transmission strain and improve throttle response under load. This can lead to better fuel efficiency and reduced wear on the transmission over time.

5. **Better Launch and Acceleration** The higher stall speed allows for quicker acceleration from a stop, which is beneficial for performance driving, towing, or simply improving the feel of the vehicle. This is particularly noticeable in trucks and SUVs with powerful engines.

6. **Compatibility with Performance Modifications** If the vehicle has been modified with a performance exhaust, fuel system upgrades, or a supercharger/turbocharger, this torque converter can help match the increased power output of the engine, preventing transmission slippage or overheating.

7. **Long-Term Durability** High-quality torque converters like this one are designed to last longer than stock units, reducing the risk of failure and the need for frequent replacements. This is especially important for vehicles used in demanding conditions.

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1. **Potential for Overheating in Heavy-Duty Applications** While a 3600-3800 RPM stall speed is great for performance, it can generate more heat, especially in extreme towing or high-RPM applications. If the vehicle s cooling system is inadequate, this could lead to premature wear or failure of the converter or transmission.

2. **Possible Transmission Strain** A higher stall speed converter can place additional stress on the transmission s internal components, such as the planetary gears and clutch packs. If the transmission is already worn or not properly maintained, this could accelerate failure.

3. **Cost Compared to Stock or Lower-Stall Converters** This is a premium torque converter, and the price will be higher than a stock or basic aftermarket unit. For vehicles that don t require the performance benefits, this may not be a cost-effective upgrade.

4. **Requires Proper Installation and Tuning** Installing a torque converter with a higher stall speed may require adjustments to the transmission s programming or the vehicle s ECU (especially in modern vehicles with adaptive learning). Improper installation or lack of tuning can lead to poor performance or damage.

5. **Not Ideal for All Driving Conditions** In city driving or light-duty applications, a higher stall speed converter may feel overly aggressive or cause unnecessary strain on the engine and transmission. For daily commuters, a lower stall speed (e.g., 2000-2500 RPM) might be more appropriate.

6. **Potential for Clutch Slippage or Wear** The higher stall speed increases torque demand on the converter s clutch, which can wear out faster if the vehicle is frequently driven at high RPMs or under heavy loads. Regular maintenance and fluid changes are essential to mitigate this.

7. **Limited Availability of Replacement Parts** While Circle Specialties is a reputable brand, finding replacement parts for this specific converter may be more difficult than for OEM units. This could complicate repairs if issues arise.

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The Circle Specialties 07-13-04-4C 6L80E 3600-3800 RPM Pro Torque Converter is an excellent choice for performance-oriented drivers, towing enthusiasts, or those looking to upgrade their Ford 6L80E-equipped vehicle. Its higher stall speed provides noticeable improvements in acceleration, launch performance, and towing capability, making it a worthwhile investment for power-focused applications. However, it is not without trade-offs, particularly in terms of heat generation, transmission strain, and cost.

For **performance trucks, heavy-duty towing applications, or vehicles with modified engines**, this converter is highly recommended. It will enhance drivability and responsiveness while improving the overall feel of the vehicle.

For **daily drivers, light-duty applications, or vehicles with stock power outputs**, a lower stall speed converter (e.g., 2000-2500 RPM) may be more suitable to avoid unnecessary stress on the transmission and engine.

- You have a Ford 6L80E transmission in a truck, SUV, or performance vehicle.

- You engage in towing, hauling, or performance driving.

- You want improved acceleration and launch characteristics.

- You are willing to invest in a high-quality, durable upgrade.

- Your vehicle is used primarily for light-duty or daily commuting.

- You are on a tight budget and prefer a more cost-effective option.

- Your transmission or cooling system is not well-maintained or is already worn.

- You lack the knowledge or resources to properly install and tune the converter.

**Final Verdict:** This is a strong upgrade for the right application, but it is not a universal fix. Research your specific vehicle s needs and driving habits before purchasing. Always pair it with high-quality transmission fluid and regular maintenance to ensure longevity.

Details:

Converter has about 5,000 miles on it. 6L80 Circle specialties 245mm 3600-3800 Triple disk lock up stall converter. Comes with all the hardware and spacers seen in picture. Just swapping trans to a TH400.

Nothing wrong with it worked very well for my set up. Was custom ordered for my 2010 Camry SS.

part #: 0713044c prices

• $414.95-$600.00

specifications torquconv:

• brand: Circle D Specialties
• mpn: 07-13-04-4c
• part type: Torque Converter
• manufacturer warranty: 1 Year
• stall speed: 3600-3800
• universal fitment: No
• country of origin: United States
• performance part: Yes

general torquconv:

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

payments torquconv:

• wallet: Paypal
• other
• credit card: Visa
• money order

offer torquconv:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: February 21, 2026
• best offers: True
• sold: 0

seller torquconv:

• rating: 100.0%
• # reviews: 139
• city: Decatur, Illinois

shipping torquconv:

• cost: $28.72
• class: Standard
• type: Calculated
• service: UPS Ground
• carrier: UPS
• transit: 4-10 Days

returns torquconv:

• policy: No Returns

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