Drivetrain› Automatic Transmissions and Components

Circle D Specialties

258mm Pro Series Torque Converter

$1,499.00

SKU: 08-13-05

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 258mm Pro Series torque converter is designed for the GM 6L80E transmission, specifically noted for C6 Vette applications. It features a 258mm diameter and is custom manufactured by Circle D Specialties. Key construction elements include furnace brazing, a hand TIG-welded turbine hub, and a billet front and billet piston.
Show original supplier description
The Circle D Specialties 258mm Pro Series torque converter is engineered for GM 6L80E transmissions, with specific mention of its suitability for C6 Vette applications. This high-performance unit features a 258mm (10 1/4") diameter and is custom manufactured to exacting tolerances by Circle D Specialties, including a 4-6 week production lead time. Construction highlights of this Pro Series torque converter include a furnace-brazed core, a hand TIG-welded turbine hub for enhanced durability, and a billet front with a billet piston. The triple-disk lockup design ensures efficient power transfer. This torque converter is available with custom stall speed options, ranging from 2800-3000 RPM up to 3600-3700 RPM, allowing for precise tuning to match specific engine builds and driving preferences. Buyers can select their desired stall speed and other configuration options during the build process.

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 Number08-13-05
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.

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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