Drivetrain› Automatic Transmissions and Components

Circle D Specialties

245mm Pro Series 4L80E Torque Converter

$999.00

SKU: 05-10-04-MD2

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Circle D Specialties 245mm Pro Series 4L80E Torque Converter is a high-performance automatic transmission component. It features a 245mm diameter and is available in stall speeds ranging from 3200 to 4600 rpm. This converter is furnace brazed, hand TIG welded, and includes Torrington bearings, a billet front, and a billet piston for durability.
Show original supplier description
The Circle D Specialties 245mm Pro Series 4L80E Torque Converter is a custom-built performance component designed for GM 4L80E transmissions. This converter features a 245mm diameter, with available stall speeds ranging from 3200 to 4600 rpm, and can be configured with non-lockup, single-disk lock-up, or 3-disk lock-up options. Construction highlights include furnace brazing for strength, hand TIG welding for precision, and the use of Torrington bearings. Each unit is meticulously hand-assembled to exacting tolerances. This is a custom-manufactured product with a typical lead time of 4-6 weeks. While specific vehicle fitment is not detailed here, it is designed for 4L80E transmissions.

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

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Specifications

BrandCircle D Specialties
Part Number05-10-04-MD2
CategoryDrivetrain

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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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