Drivetrain› Automatic Transmissions and Components

Circle D Specialties

258mm Pro Series 10L90 Torque Converter

$2,249.00

SKU: 29-13-05

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 258mm Pro Series 10L90 Torque Converter is a performance upgrade designed for 2019+ GM L87 builds. It features a billet front and billet piston for enhanced durability.

This converter is hand-assembled and includes key components like Torrington bearings, a flanged impeller hub for anti-flex durability, and furnace brazing. It is available with various stall speed options to match different engine and power-adder setups.
Show original supplier description
The Circle D Specialties GM 258mm Pro Series 10L90 Torque Converter is a custom-manufactured product designed to enhance the performance of 2019+ GM L87 engine applications, offering options to accommodate a variety of setups while maintaining pleasant street driving characteristics. Constructed with premium components, this torque converter features a billet front and billet piston, Torrington bearings, and a flanged impeller hub for superior anti-flex durability. It is furnace brazed and hand TIG welded on the turbine hub. This converter is specifically engineered for GM 6.2L V8 L87 engine applications, including the 2019+ Chevrolet Silverado 1500 and GMC Sierra 1500 (with GM 8-Speed Automatic MQ3 transmission), as well as 2021+ Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, GMC Yukon, and GMC Yukon XL models (with GM 10-Speed Automatic MQC transmission). Circle D Specialties offers a wide range of stall speed options, from 2800-3000 RPM up to 4800-5000 RPM, allowing for customization based on specific engine, power-adder, and vehicle configurations. Most converters are built-to-order, with current lead times around 3-4 weeks.

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 Number29-13-05
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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