S-Type Oil Cooler Kit - Black

• 2023-2025 Honda | Civic Type R

Optimize thermal management on your 2023-2026 Honda Civic Type R FL5 with the HKS S-Type Oil Cooler Kit in Black. Developed through extensive real-world and endurance testing, this vehicle-specific kit addresses oil temperature rise under high-load driving, a key weakness HKS identified in the FL5 platform. Inheriting the proven left-fender layout from the FK8 while redesigning cooling performance for FL5 characteristics, the S-Type core (200x122.5x48mm, 9 stages) is positioned for maximum efficiency without affecting water temperature or air conditioning. A large dedicated air duct and air guide actively direct fresh air to the core, while optimized discharge airflow ensures complete system efficiency. The result is approximately 15°C of oil temperature reduction, stabilizing oil temps around 125°C in 26°C ambient conditions where stock exceeds 140°C, plus a 3-5°C water temperature reduction for stable power output.

• S-Type oil cooler kit for 2023-2026 Honda Civic Type R FL5 (K20C)
• Addresses high-load oil temperature rise identified through HKS testing
• Left-fender core placement (200x122.5x48mm, 9 stages) for efficient cooling
• Dedicated large air duct and air guide for active fresh-air introduction
• Optimized discharge airflow for system-wide thermal efficiency
• Approx. 15°C oil temp reduction; stabilizes at ~125°C (vs. 140°C+ stock)
• Reduces water temp by 3-5°C for stable power output
• #10 oil hoses, thermostat housing, and mounting hardware included
• Unpainted resin air duct included; optional dry-carbon duct available (15999-AH001)
• Bumper and splash shield modification required (template included)
• Reference installation time: 6 hours
• Requires 5.9L oil (approx. 500cc additional)

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