Drivetrain Automatic Transmissions and Components

Sun Coast Converters

Suncoast Converters 9 (245mm) High Performance Converter COA-20400-1

$1,841.93

SKU: S02K COA-20400-1

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In Stock
Ships by Jun 10
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Description

The Coan Racing COA-20400-1 9″ (245mm) High Performance Converter is a precision-engineered torque converter designed for serious racers using TH350 and TH400 transmissions. At a compact 9-inch size, this converter provides an aggressive stall profile and impressive torque multiplication in a smaller package, perfect for eliminating excess rotating mass while maximizing launch response. As part of Coan’s High Performance series, it features durable components with reinforcement welds in critical areas to endure high RPM and torque conditions. Designed for durability, the COA-20400-1 resists stator ballooning and maintains hydraulic efficiency even under extreme use, ensuring consistent pump clearances and engagement. It's tough internal components and compact form make it ideal for drag, circle track, or other performance applications where size, reliability, and power delivery matter most.

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Specifications

BrandSun Coast Converters
Part NumberS02K COA-20400-1

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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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