Product images and videos 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.
Drivetrain› Automatic Transmissions and Components
Circle D Specialties
GM 258mm Pro Series 2004R Torque Converter – 258mm Stall Options: 3600-3700 / Lock Up Option: Single Disk Lock Up
SKU: 03-12-05
Moderate — 2–4 hours
Overview
Show original supplier description
Converter Diameter - 258mm - 10 1/4"
Bolt Pattern - 3 x 10.75
- Furnace Brazed
- Hand TIG Welded Turbine Hub
- Torrington Bearings
- Billet Front and Billet Piston
- Deep Groove Ball Bearing Design for Longer Clutch Life
- Flanged Impeller Hub for Anti-Flex Durability
- Hand Assembled to Exacting Tolerances
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
| Brand | Circle D Specialties |
| Part Number | 03-12-05 |
| Category | Converters |
Videos
Shop Tour of Circle D Specialties and my new 245mm Pro Series Torque Converter
Torque Converter Install Guide - Circle D Specialties 24-13-05-2B - 16-18' Camaro SS
'Circle D Specialties' | Factory Tour in America
Silverado 6L80 6L90 Circle D Upgraded Torque Converter Install - Save 2014-2018 Sierra Transmission!
Torque Converters Explained with my Circle D Specialties 252mm Converter
What is a bolt together torque converter? CIRCLE D SPECIALTIES
Circle D 4200 stall converter regular driving
Short How Its Made: Circle D Torque Converters
About MOTORMIA
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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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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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