Product Overview
The Sealco 20-i21110 Trailer ABS ECU Valve Kit replaces earlier WABCO and Sealco units such as 21-1-10.
It’s a 2S/1M (Two Sensor / One Modulator) system designed for single-axle or tandem-axle trailers where one modulator manages both sides through two wheel sensors.
This kit includes the ECU/modulator, power cable, and sensor extension cables — providing a complete, ready-to-install ABS control package that simplifies service and ensures FMVSS-121-compliant braking control.
Ideal for dry van, dump, and flatbed trailers, the 20-i21110 features sealed connectors and a bottom-mount harness port for moisture protection.
