
Pump AYC EVO 4-6
A restored Active Yaw Control (AYC) pump for the Lancer Evolution IV, V and VI — the hydraulic heart of the system that varies torque between the rear wheels through a corner. Each pump is stripped, ultrasonically cleaned and rebuilt with genuine replacement parts, then calibrated for pressure, flow and solenoid response and load-tested on the bench. This is a Stage 1 build: restored for improved performance and faster pressure build-up, which is what a worn AYC system tends to lose first. Supplied with a 12-month warranty and shipped worldwide.
Related units
Related articles

ACD Pump Restoration Process
What a full ACD/AYC pump rebuild involves, what gets replaced, and why bench testing under load is the stage that matters.
Read more →
Signs of AYC Pump Failure
Warning lights, the ignition-on self-test, and how to tell a failing ACD/AYC pump from a sensor or fluid fault.
Read more →
What is the ACD System and How Does It Work
How Mitsubishi's Active Center Differential works, which Lancer Evolution models actually have it, and why US-market cars differ.
Read more →

