HKS Transfer Case Cooler for the GR Corolla 2023+
It protects the transfer by controlling the transfer oil temperature during continuous high-load driving.
■What is transfer?
It is installed behind the engine and changes the direction of the driving force input from the transaxle differential case by 90 degrees and outputs it to the rear.
The 4WD system installed in the GR Corolla controls drive force to the rear axle using an electronically controlled coupling installed in front of the rear differential.
This mechanism constantly adjusts the driving force to ensure ideal driving force distribution in each mode (NORMAL, GRAVEL, TRACK).
■Product overview
Since the transfer oil temperature in the GR Corolla's transfer case is prone to rising during continuous high-load driving on a circuit, etc., a protective control (transfer case protective control) is adopted that switches the vehicle to 2WD to prevent the transfer oil temperature from becoming abnormally high.
The HKS TRANSFER OIL COOLER was developed with a focus on the fact that transfer oil temperature easily rises, with the aim of extending the life of transfer oil and protecting the transfer.
For vehicles equipped with a transfer protection control cancellation program, it is possible to activate the cancellation program (cancel the 2WD mode), so the vehicle will not switch to 2WD even when driving continuously on a circuit. (If the cancellation program is activated, the vehicle manufacturer's warranty will not apply. For details, please check the warranty regulations for your vehicle.)
Vehicles equipped with Transfer Protection Control Cancellation Program
Domestic model: March 2025 onwards
North American version: September 2024 onwards
For details, please contact the store where you purchased the vehicle.
Cooler pipe installation position
Oil pump mounting position
■ Components
Transfer cooler pipe
Oil Filter
Oil pump
Mounting bracket
Oil pump controller
Horse, harness and short parts set
■ Features
A dedicated pipe-type cooler is used to ensure reliable cooling of the transfer oil without affecting the engine coolant, engine oil, or I/C cooling performance. The bracket that secures the cooler is designed to minimize the frontal projection area so as not to impede the flow of cooling air. (Minimizing the impact of cooling air on the radiator and intercooler)
The oil pump is manufactured in-house by HKS and is an electric type that is capable of handling high loads and has a high flow rate.
A dedicated pump controller is set up. Even if the pump is operated when the oil temperature is low (high viscosity), the overcurrent protection control will put the pump into standby mode, but it will automatically start operating when the oil temperature becomes appropriate.(Note: To avoid overloading the pump as much as possible, it is recommended to operate the pump when the oil temperature is 60°C or higher.)In addition, in vehicles equipped with a transfer protection control cancellation program, the transfer protection control cancellation signal (pressing the TRACK button within 1 minute after starting the engine) is automatically detected and the pump will operate. The operating status of the pump can be checked on the display of the dedicated controller. Wiring from the power supply to the electric pump is also included.
A specially designed banjo type attachment is used for the transfer oil outlet. It is designed to be resistant to damage even in the unlikely event of an impact from the bottom of the vehicle. The banjo bolt has a
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| Артикул | 27002-AT001 |
| Производитель | HKS |
| Совместимость | GR Corolla 2023+ |