Drivetrain› Automatic Transmissions and Components

Circle D Specialties

4R70 Pro Series 265mm Torque Converter

$1,199.00

SKU: 30-12-06-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 4R70 Pro Series Torque Converter is a 265mm performance converter designed for heavy-duty applications. It features 100 square inches of clutch lining for Wide Open Throttle (WOT) lock-up.

Construction includes furnace brazing, hand TIG welding, and Torrington bearings. The converter is built with billet front and billet piston materials, and a flanged impeller hub for enhanced durability. It is hand-assembled to exacting tolerances.
Show original supplier description
The Circle D Specialties 4R70 Pro Series Torque Converter is a 265mm performance converter engineered for heavy-duty applications, suitable for towing, off-roading, or daily driving with power adder trucks. It boasts 100 square inches of clutch lining for robust Wide Open Throttle (WOT) lock-up capability. Constructed with premium materials, this torque converter features furnace brazed fins, hand TIG welded seams, and durable Torrington bearings. Each unit is meticulously hand-assembled to ensure it meets exacting tolerances. This converter offers a range of customizable options, including stall speeds from Ask CDS up to 3200-3400 RPM, and lock-up configurations such as Single Disk Lock Up or 3 Disk Lock Up. Additionally, customers can choose between Stock or Mechanical Diode sprag options to tailor performance to their specific needs. Please note that this is a custom-manufactured product with an estimated lead time of 4-6 weeks for production.

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

Don’t gamble
on fit.

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 Number30-12-06-MD2
CategoryDrivetrain

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy