{"product_id":"hks-toyota-gr-corolla-transfer-case-oil-cooler-kit","title":"HKS [Toyota GR Corolla] Transfer Case Oil Cooler Kit | 27002-AT001","description":"\u003cp\u003eHKS Toyota GR Corolla Transfer Case Oil Cooler Kit\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMonitors and controls transfer oil temperature during high-load continuous driving to protect the transfer unit.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eWhat is Transfer Unit?\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eIt is installed at the rear of the engine and changes the direction of the driving force coming from the transaxle differential case by 90 degrees before sending it to the rear wheels.\u003c\/li\u003e\n\u003cli\u003eIn the 4WD systems used in the GR Corolla, an electronically controlled coupling located in front of the rear differential adjusts the power sent to the rear wheels.\u003c\/li\u003e\n\u003cli\u003eThe system constantly fine-tunes the power distribution to achieve the ideal balance for each driving mode (NORMAL, GRAVEL, TRACK).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOn the GR Corolla, the transfer system switches to 2WD during continuous high-load driving to prevent overheating.\u003c\/li\u003e\n\u003cli\u003eThe HKS TRANSFER OIL COOLER helps maintain lower transfer oil temperatures, extends oil life, and protects the transfer unit.\u003c\/li\u003e\n\u003cli\u003eFor vehicles equipped with the Transfer Protection Cancel Program, full-time 4WD is available even during circuit driving by disabling the limp mode, which switches to 2WD. *(Using the cancel program may void the vehicle’s warranty. Please check your warranty terms.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVehicles equipped with transfer protection control cancellation program\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJapan model: Mar\/2025 –\u003c\/li\u003e\n\u003cli\u003eNorth American model: Aug\/2024 -\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e※Vehicles manufactured from Aug\/2020 to Dec\/2020 do not feature Transfer Protective Control. \u003cbr\u003eFor details, please contact the store where you purchased the vehicle.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eComponents\u003c\/span\u003e\u003c\/h4\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer cooler pipe\u003c\/td\u003e\n\u003ctd\u003eOil filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOil pump\u003c\/td\u003e\n\u003ctd\u003eMounting bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOil pump controller\u003c\/td\u003e\n\u003ctd\u003eHose, harness, and short parts set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe dedicated pipe-type cooler ensures the transfer oil is cooled without affecting engine coolant, engine oil, or I\/C cooling performance. The bracket fixing the cooler is designed to avoid obstructing airflow to the radiator and intercooler.\u003c\/li\u003e\n\u003cli\u003eHKS uses a high-load, high-flow electric oil pump, controlled by a dedicated pump controller. If the pump is operated when the oil temperature is low (high viscosity), the overcurrent protection control puts it in standby mode and automatically restarts once the oil temperature reaches an appropriate level. It’s recommended to operate the pump when the oil temperature is above 60°C to prevent overloading.\u003c\/li\u003e\n\u003cli\u003eFor vehicles equipped with a transfer protection control cancellation program, selecting the TRACK mode within 1 minute of engine startup automatically activates the pump. The pump's operating status can be checked on the controller display. The kit includes wiring from the power source to the electric pump.\u003c\/li\u003e\n\u003cli\u003eThe transfer oil outlet uses a specially designed banjo-type attachment that is resistant to impact damage. The banjo bolt has a PT1\/8 plug hole, allowing for oil changes without removing the bolt, and can also be used as a temperature sensor mounting hole.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003ePump Controller Function\u003c\/li\u003e\n\u003cli\u003eOperating modes\n\u003cul\u003e\n\u003cli\u003eAUTO mode (for vehicles without a transfer protection control cancellation program)\u003c\/li\u003e\n\u003cli\u003eFULL AUTO mode (for vehicles with a transfer protection control cancellation program)\u003c\/li\u003e\n\u003cli\u003eMANUAL mode (for maintenance)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eCurrent value monitoring function\n\u003cul\u003e\n\u003cli\u003eWhen the pump current is above the rated value, it goes into standby mode. During standby, it operates the pump for 3 seconds every 30 seconds to monitor the current value\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eOvercurrent protection function\n\u003cul\u003e\n\u003cli\u003eTransfer protection control cancellation function (only valid for vehicles with a transfer protection control cancellation program)\u003c\/li\u003e\n\u003cli\u003eThe transfer protection control cancellation function can be used by connecting the vehicle's \"4WD mode select switch\" connector to the pump controller.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":42894283702374,"sku":"hks27002-AT001","price":1906.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/8703\/7237\/files\/hks-toyota-gr-corolla-transfer-case-oil-cooler-kit-27002-at001-5870078.jpg?v=1770321796","url":"https:\/\/jdmuscleusa.com\/products\/hks-toyota-gr-corolla-transfer-case-oil-cooler-kit","provider":"JDMuscle","version":"1.0","type":"link"}