Transmission Components

Coan direct drum assembly for GM TH400 transmissions. Features a 36-element super sprag, 5-clutch intermediate design, made from steel with a natural finish, designed for drag racing builds. Ensures maximum holding power and durability in...

Coan direct clutch hub and forward pressure plate for GM TH400 transmissions. Made from billet steel for durability, designed for drag racing builds to ensure reliable clutch engagement. Enhances power transfer in high-performance TH400 racing setups...

Coan direct drum assembly for GM TH400 transmissions. Features a 5-clutch design, made from 7075 billet aluminum, includes intermediate hub and pressure plate, designed for drag racing builds. Enhances clutch capacity and durability in high-performance...

Coan input shaft for GM TH400 transmissions, compatible with OEM drum. Features a 300M alloy steel construction with larger splines, designed for drag racing builds to handle extreme torque. Ensures reliable power transfer in high-performance TH400...

Coan main shaft for GM TH400 transmissions. Features a 300M alloy steel construction with rolled splines for added strength, designed for drag racing builds to handle high torque. Ensures reliable power transfer and durability in high-performance TH400...

Coan output shaft bearing kit for GM TH400 transmissions. Includes needle roller bearings and shim, designed for street or racing builds to reduce friction and ensure proper alignment. Enhances durability and performance in high-performance TH400 setups...

Coan Hi-Flo transmission filter for GM TH400 transmissions, 1967-up. Designed for street or racing builds to ensure maximum fluid flow and filtration, preventing debris buildup. Enhances transmission longevity and performance in high-performance TH400...

Coan gasket and seal kit for GM TH400 transmissions. Includes gaskets, O-rings, and seals, designed for street or racing builds to ensure a leak-free rebuild. Provides essential sealing components for maintaining TH400 performance in high-performance...

Coan sealing rings for GM TH400 transmissions, forward/direct drum (race). Made from composite material for aluminum drums, designed for drag racing builds to prevent fluid leaks. Ensures reliable sealing in high-performance TH400 setups. Sold as each.

Coan fluid pressure regulating spring for GM TH400 transmissions. Supports up to 220 psi, designed for street or racing builds to optimize transmission line pressure. Ensures consistent shifting and clutch engagement in high-performance TH400...

Coan master overhaul kit for GM TH400 transmissions. Includes clutches, steels, gaskets, and seals, designed for street or racing builds to provide a complete rebuild solution. Ensures reliable performance and durability in high-performance TH400 setups...

Coan Instant Reaction transbrake kit for GM TH400 transmissions. Includes springs, solenoid, and valve, made from aluminum for lightweight performance, designed for drag racing builds. Provides fast transbrake engagement for quicker reaction times in...