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Drivetrain› Automatic Transmissions and Components

Circle D Specialties

245mm Pro Series 4L80E Torque Converter

$2,549.00 $999.00 Save $1,550.00

SKU: 05-10-04

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Circle D Specialties GM 245mm Pro Series 4L80E Torque Converter is a custom manufactured product designed for enhanced performance. It features a 245mm diameter, furnace brazed construction, and hand TIG welded seams.

Available in a wide range of stall speeds from 3000-4600 rpm, this torque converter can be configured with non-lockup, single disk lock-up, or 3-disk lock-up options. Additional configurations include spragless and mechanical diode upgrades for further customization.
Show original supplier description
The Circle D Specialties GM 245mm Pro Series 4L80E Torque Converter is a custom-manufactured component engineered for high-performance applications. This torque converter boasts a 245mm (9 3/4 inch) diameter and is available in stall speeds ranging from 3000 to 4600 rpm, with custom options also available. Constructed for durability and performance, the Pro Series converter features furnace brazed seams, hand TIG welded construction, and Torrington bearings. It is equipped with a billet front cover and billet piston for enhanced strength and reliability. Customers can select from various configurations to match their specific needs. Options include non-lockup, single disk lock-up, and 3-disk lock-up designs. Further customization is possible with the availability of spragless (only on non-lockup) and mechanical diode upgrades, which can enhance performance and longevity.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCircle D Specialties
Part Number05-10-04
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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