{"product_id":"mitsubishi-oem-3520a071-ayc-acd-differential-hydraulic-pump-unit-hydraulic-unit-diff-control-for-lancer-evolution-x-cz4a-replaces-3520a045-3520a066","title":"Mitsubishi OEM 3520A071 AYC\/ACD Differential Hydraulic Pump Unit | Hydraulic Unit Diff Control for Lancer Evolution X (CZ4A) | Replaces 3520A045 3520A066","description":"\u003ch3\u003eMitsubishi OEM 3520A071 — AYC\/ACD Differential Hydraulic Pump (Hydraulic Unit, Diff Control)\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eMitsubishi 3520A071\u003c\/strong\u003e is the genuine OEM \u003cstrong\u003eAYC \/ ACD differential hydraulic pump\u003c\/strong\u003e (hydraulic unit) used on the \u003cstrong\u003eLancer Evolution X (CZ4A, 2008–2015)\u003c\/strong\u003e. It is the heart of the vehicle's \u003cstrong\u003eActive Yaw Control (AYC)\u003c\/strong\u003e and \u003cstrong\u003eActive Center Differential (ACD)\u003c\/strong\u003e systems, generating the hydraulic pressure that drives the differential clutches for torque vectoring and active torque split.\u003c\/p\u003e\n\u003cp\u003eThis is a \u003cstrong\u003efactory genuine Mitsubishi part\u003c\/strong\u003e, a direct replacement for the original unit — ensuring correct fitment, pressure performance and long-term durability for your Evo X.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eYour Benefits at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 % Genuine OEM\u003c\/strong\u003e — Mitsubishi factory part, correct specifications and fitment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement\u003c\/strong\u003e — replaces OEM part numbers 3520A045 and 3520A066\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect vehicle fitment\u003c\/strong\u003e — Lancer Evolution X (CZ4A) 2008–2015, including Evolution GSR \/ MR \/ Final Edition (2.0L)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps AYC\/ACD working\u003c\/strong\u003e — restores torque-vectoring rear differential and active center differential function\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEssential for drivability \u0026amp; safety\u003c\/strong\u003e — restores proper traction, cornering stability and launch performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory quality\u003c\/strong\u003e — built to Mitsubishi's original durability and pressure standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat Is the AYC\/ACD System?\u003c\/h3\u003e\n\u003cp\u003eThe AYC system actively distributes drive torque between the left and right rear wheels for sharper, more stable cornering, while the ACD electronically varies the front\/rear torque split at the center differential. Both systems are hydraulically actuated by the 3520A071 pump — when this unit fails, you may see warning lights (AYC\/ACD), lose differential function, or hear abnormal pump noise. Replacing it with a genuine unit restores full system performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003e表格\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOEM Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3520A071\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOther Names\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHydraulic Unit, Diff Con; AYC\/ACD Differential Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplaces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3520A045, 3520A066\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMitsubishi Lancer Evolution X (CZ4A) — 2008 to 2015 (Evolution GSR, MR, Final Edition; 2.0L L4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eActive Yaw Control (AYC) + Active Center Differential (ACD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrand New, Genuine Mitsubishi OEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eTypical Failure Symptoms of the Original Unit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAYC\/ACD warning light illuminated on the dash\u003c\/li\u003e\n\u003cli\u003eDifferential\/torque-vector function degraded or inactive\u003c\/li\u003e\n\u003cli\u003eConstant running or loud noise from the pump\u003c\/li\u003e\n\u003cli\u003eHydraulic pressure leak from the unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003eIf you are replacing a failed unit, we also recommend checking the AYC\/ACD accumulator and pressure sensor for a complete repair.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Mitsubishi","offers":[{"title":"Default Title","offer_id":48938555998296,"sku":null,"price":2714.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/2799\/9320\/files\/3520A07166.jpg?v=1789983983","url":"https:\/\/gexufein.com\/products\/mitsubishi-oem-3520a071-ayc-acd-differential-hydraulic-pump-unit-hydraulic-unit-diff-control-for-lancer-evolution-x-cz4a-replaces-3520a045-3520a066","provider":"Gexufein Automation","version":"1.0","type":"link"}