CSF FL5 Civic Type R / DE5 Integra Type S High-Performance All-Aluminum Radiator

CSF has established a distinguished reputation in the development and manufacture of advanced cooling systems for Honda vehicles, underscored by its collaboration with Honda Performance Development (HPD). This partnership has yielded factory radiators designed specifically for high-performance applications, including the HPD Race Radiator utilized in the FK8 Civic Type R TCR. Building on this extensive experience, CSF has engineered a High-Performance radiator tailored for the FL5 Civic Type R and DE5 Integra Type S models, making cutting-edge cooling technology accessible to a broader audience.

The CSF FL5 Civic Type R / DE5 Integra Type S High-Performance Radiator integrates the latest advancements in thermal management, notably featuring CSF’s proprietary 5mm fin cooling technology. This innovation enhances the heat transfer surface area by 20-25% compared to traditional larger fin designs, thereby significantly improving the radiator’s efficiency in dissipating heat under demanding conditions.

In contrast to the original equipment manufacturer (OEM) radiator, which employs a plastic tank and a single-row aluminum core, the CSF radiator is engineered to meet the rigorous demands of high horsepower and aggressive driving scenarios. Turbocharged engines such as the K20C1 generate substantial heat, and effective temperature regulation is critical to maintaining engine integrity and prolonging component lifespan. By optimizing cooling performance, this radiator contributes to enhanced reliability and operational stability.

Key technical features of the CSF radiator include a robust 2-row, 42mm aluminum core that increases fluid capacity and enhances heat dissipation capabilities. The core is complemented by CSF’s exclusive B-Tube Technology, which elevates heat transfer efficiency by approximately 15% over conventional oval welded tubes. Additionally, the multi-louvered fin design maximizes airflow through the radiator, ensuring optimal thermal exchange and performance consistency.

Manufactured with precision TIG-welded 100% all-aluminum construction, the radiator offers superior structural strength and durability, capable of withstanding the stresses of high-performance driving. This construction method not only improves longevity but also ensures resistance to corrosion and mechanical fatigue. The radiator is designed for a direct, drop-in fit into the factory mounting location, eliminating the need for modifications or custom fabrication, thereby simplifying installation and preserving vehicle integrity.

Comprehensive testing conducted on a FL5 Civic Type R, tuned to 294 wheel horsepower and equipped with an upgraded, larger front mount intercooler, demonstrated the radiator’s effectiveness. The larger intercooler, while beneficial for intake air temperatures, typically increases engine coolant temperatures by approximately 7% due to airflow restriction. The CSF radiator successfully reduced coolant temperatures by 8 degrees Celsius compared to the OEM unit, underscoring its critical role in maintaining optimal engine thermal conditions, particularly for vehicles with enhanced cooling demands or those used in track environments.

Features

• 2-Row, 42mm Ultra-High-Performance Core for superior heat dissipation
• Cooling Tubes incorporating CSF's Exclusive B-Tube Technology for enhanced thermal transfer
• Innovative 5mm Tall Ultra Efficient Fins with Multi-Louvered Design to maximize surface area contact and airflow
• CNC Machined Mounting Brackets and OEM Style Inlet/Outlet for precise fitment and ease of installation
• 100% All Aluminum TIG-Welded Construction ensuring durability and resistance to wear
• 1-Hour "Mirror Finish" Hand Polish delivering a refined appearance and corrosion resistance
• True Plug-and-Play "Drop-in Fit" Installation requiring no modifications, preserving factory specifications
• Individually Leak and Pressure Tested to guarantee reliability and performance integrity
• 2-Year Limited Warranty providing assurance of product quality and manufacturer support

Applications

OEM Part Numbers

• Honda: 19010-66V-A01
• Honda: 19010 66V A01
• Honda: 1901066VA01
• Acura: 19010-66V-A01
• Acura: 19010 66V A01
• Acura: 1901066VA01

Warranty

Cooling Systems and Flexibles, Inc. (CSF) provides a comprehensive warranty for its High-Performance Cooling Systems, applicable under normal use and service conditions to the original purchaser of the vehicle in which the product was initially installed. Detailed warranty information is available on the Warranty Page.

SKU# 7221 Warranty Term: 2 years

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

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We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

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All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.