Modulator Plug With O-Ring

MODULATOR PLUG WITH O-RING

The Coan Racing COA‑12836 Modulator Plug with O‑Ring is a precision-machined closure component designed for the transmission modulator port used in GM Powerglide units. Crafted to exacting specifications, the plug includes a high‑quality elastomer O‑ring that seals against the case bore to prevent fluid leaks. Its durable construction withstands high-temperature environments and repeated service cycles, making it a reliable solution during routine rebuilds or performance tuning.

The COA‑12836 provides tight, leak-free sealing and helps maintain precise modulation control in demanding driving conditions.