Drivetrain› Automatic Transmissions and Components

Circle D Specialties

258mm Pro Series Torque Converter

$1,199.00

SKU: 02-12-05

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 GM 258mm Pro Series torque converter is designed for the GM 4L60E LT Style transmission. This converter features a 258mm diameter and offers stall speeds ranging from 2800 to 3700 RPM. It is constructed with a furnace-brazed turbine, hand TIG-welded turbine hub, and billet front and billet piston.
Show original supplier description
The Circle D Specialties GM 258mm Pro Series torque converter is engineered to enhance the performance of GM 4L60E LT Style transmissions, including those found in C5 Corvettes. Key features include a 258mm (10 1/4-inch) diameter and a versatile stall speed range of 2800-3700 RPM, suitable for various performance applications. It also features a billet front and billet piston for increased strength. The deep groove ball bearing design contributes to longer clutch life, while the flanged impeller hub provides anti-flex durability. Each unit is hand-assembled to exacting tolerances, ensuring reliable performance.

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 Number02-12-05
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.

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