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2018-23 Mustang Circle D Pro Series Torque Converter - 10R80 - 3800 RPM Stall 5.0 by Circle D Specialties


2018-23 Mustang Circle D Pro Series Torque Converter - 10R80  - 3800 RPM Stall 5.0
2018-23 Mustang Circle D Pro Series Torque Converter - 10R80  - 3800 RPM Stall 5.0
2018-23 Mustang Circle D Pro Series Torque Converter - 10R80  - 3800 RPM Stall 5.0
2018-23 Mustang Circle D Pro Series Torque Converter - 10R80  - 3800 RPM Stall 5.0
2018-23 Mustang Circle D Pro Series Torque Converter - 10R80  - 3800 RPM Stall 5.0
2018-23 Mustang Circle D Pro Series Torque Converter - 10R80  - 3800 RPM Stall 5.0

Launch your NA-powered 10R80-equipped 2018-2023 Mustang 5.0 in its powerband with help from this Circle D Specialties 4000 RPM stall converter.

Item #CIR-4618043X287
MPN# 46-18-04-3X287

Everyday Low Price: $2,795.00

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LMR showroom & will call pickup service will be closed beginning Monday 9/21/26 for renovations until further notice. Need help? Contact Us.

 Benefits

  • Precision Balanced
  • Retains Lock-up Feature
  • Higher Launch RPM Range
  • Furnace Brazed

 Features

  • 3800-4200RPM Stall Speed
  • Hand TIG Welded
  • Billet Front & Piston
  • Torrington Bearings

 What's in the Box

  • (1) Torque Converter

Circle D Pro Series Torque Converter - 10R80 - 245mm
Unlock more consistent and powerful launches with the Circle D Specialties 3800-4200 stall converter for NA-powered 10R80-equipped 2018-2023 Mustang 5.0s. Designed as part of Circle D’s Pro Series, this converter is built for serious street and strip performance, offering exceptional strength, durability, and precision. With a 3800-4200 stall speed, it’s perfectly matched for naturally aspirated setups focused on maximum effort, high-revving power, and lightweight performance. By allowing the engine to reach a higher RPM range before engagement, this converter helps your Mustang launch harder and more consistently, whether you’re tearing up the drag strip or dominating the streets.

Pro Series Features
Pro Series converters feature a 245mm diameter with furnace brazed internals for increased torque handling and strength. The billet front cover and piston, paired with Torrington bearings, ensure a long lifespan and provide smooth operation. Using 100 square inches of clutch lining to deliver outstanding WOT lock-up performance with a flanged impeller hub for anti-flex reinforcement. Each unit is hand TIG-welded and hand-assembled to exacting tolerances for consistent, race-ready performance.


Circle D Specialties Warranty - Click Here -

  • Ford Mustang - 2018, 2019, 2020, 2021, 2022, 2023
  • Engines: 5.0
Fitment Notice
  • Fits 2018-2023 Mustang 5.0 NA applications only.
  • Not recommended for Boosted applications.

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About This Brand


Circle D Specialties

Circle D Specialties - Our Performance Moves Us!
Circle D Specialties mission is to make exceptional torque converters while providing unparalleled knowledge and outstanding customer service. They are driven to continually improve and raise the bar with their products, relentlessly pursuing perfection. Circle D Specialties founded in 1976 as Circle D Automotive in Houston, Texas. The company evolved from a general auto repair shop to specializing in transmissions, its name originated from the founder's circle track racing days. The business expanded to manufacture OE-style torque converters in 1984, leading to the creation of Circle D Specialties. In 2004, their son and his wife bought the company, shifting its focus to bring state of the art torque converter technology. Their manufacturing facility allows them to take purpose built drag racing torque converters to previously unheard of levels of performance. This technology trickles down into their products for the street car enthusiast as well. With the powerful combination of CFD modeling software, SolidWorks design, 5-axis CNC-machining, & comprehensive data analysis all done in-house at their Houston, Texas facility. Circle D Specialties has the ability to custom tailor & tune torque converters to the highest degree for each unique combination.

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