Description
The HKS Transfer Oil Cooler Kit is designed to enhance the performance and durability of the Toyota GR Corolla (GZEA14H, 2023–2025) by controlling transfer oil temperature during high-load driving. This complete system adds an external oil cooler, high-efficiency electric oil pump, and an intelligent controller to ensure consistent lubrication and protection of the 4WD transfer unit.
Key Features
- Optimized Cooling Efficiency: Reduces transfer oil temperatures by up to 20°C under continuous high-load driving.
- Enhanced Durability: Prevents overheating and oil degradation, ensuring stable AWD system performance in track or rally conditions.
- Intelligent Control System: Automatically manages pump activation with overcurrent and abnormal temperature protection.
- Complete Plug-and-Play Kit: Includes preassembled hoses, fittings, harness, oil cooler core, and mounting brackets for easy installation.
- Performance Tested: Verified results at Fuji Speedway show stable oil temps (~130°C) with the HKS cooler versus ~150°C without it.
Benefits
- Extends the lifespan of transfer gears and oil.
- Maintains consistent power delivery during aggressive driving.
- Reduces thermal load on the drivetrain for improved reliability.
- Ideal for tuned or track-driven GR Corollas.
Compatibility
- Vehicle: Toyota GR Corolla (GZEA14H)
- Engine: G16E-GTS (1.6L Turbocharged)
- Model Years: 2023–2025
- Drivetrain: 4WD
Installation Notes
- Installation requires removal of underbody panels.
- Recommended to activate the system before sporty or track driving sessions.
- Not compatible with vehicles lacking the transfer protection control cancellation program unless specified.
- Estimated installation time: 5–6 hours.
Kit Includes
- Transfer oil cooler core and piping
- Electric oil pump
- Controller unit with harness
- Oil filter and bracket set
- Mounting hardware and hoses
- Instruction manual
Technical Specs
- Part Number: 27002-AT001
- Material: Aluminum core and steel fittings
- Designed For: High-performance temperature regulation of transfer unit
- Manufacturer: HKS Japan
Why Choose HKS
With decades of motorsports experience, HKS leads the aftermarket industry in performance and reliability. The Transfer Oil Cooler Kit is built to the same high standards trusted by professional racers and enthusiasts worldwide—offering peace of mind for spirited daily driving or full-on competition use.
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