Pump ACD AYC EVO 7-9 GSR MR Stage 1
A restored combined ACD/AYC pump for the Lancer Evolution VII, VIII and IX in GSR and MR specification, feeding both the Active Center Differential and the Active Yaw Control circuits. The pump is completely disassembled and ultrasonically cleaned, worn parts are replaced with genuine components, and the rebuilt unit is calibrated for pressure, flow and solenoid response on the bench, then run under simulated drivetrain load as a final check. This is a Stage 1 build: restored for improved performance and noticeably faster pressure build-up. 12-month warranty, 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 →