MODULATOR PLUG (TH400, TH350)

The Coan Racing COA‑22045 Modulator Plug is a high-quality service component designed for use with TH400 and TH350 transmissions. Precision-machined and manufactured in the USA, this plug replaces the factory modulator valve, providing racers and rebuilders with a reliable means of sealing the modulator port and maintaining proper line pressure control.

It fits seamlessly into valve bodies, offering a simple, drop-in solution to replace worn or missing components and restore precise hydraulic modulation in performance and street applications.