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Drivetrain› Automatic Transmissions and Components

Coan Engineering

280mm Pro Street Torque Converter for GM TH350/TH400

$736.61 $566.93 Save $169.68

SKU: COA20211-4

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In Stock
Ships by Aug 3
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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Coan COA-20211-4 is a 280mm Pro Street torque converter engineered for GM TH350 and TH400 automatic transmissions. This unit features an 11-inch diameter and a 10.750-inch bolt circle, making it suitable for a wide range of street performance applications. As a Pro Street torque converter, the COA-20211-4 is designed to offer a balance between off-the-line acceleration and street drivability. Coan Engineering, a manufacturer of USA-made transmissions, torque converters, and components since 1976, produces this converter with a focus on performance and reliability for demanding applications.

MIA's Description

The Coan COA-20211-4 is a 280mm Pro Street torque converter designed for GM TH350 and TH400 transmissions. It features an 11-inch diameter and a 10.750-inch bolt circle. This torque converter is intended for street performance applications.

Fitment

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Specifications

BrandCoan Engineering
Part NumberCOA20211-4
CategoryDrivetrain

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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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