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Product Details
The CSF Universal Motorsport Dual-Pass Aluminum Radiator (8378) is a premium, competition-grade cooling solution designed for high-horsepower racing applications, professional drifting, and custom motorsport builds. Featuring CSF's exclusive B-Tube technology, a massive 68mm-thick aluminum cooling core, TIG-welded construction, and high-flow -20AN ORB coolant connections, this radiator delivers exceptional cooling potential for demanding performance environments.
Developed for motorsport applications where efficient heat dissipation and reliable coolant circulation are critical, the CSF 8378 provides a versatile foundation for custom cooling systems. Its universal design makes it suitable for front-mounted, rear-mounted, and other custom radiator configurations where the vehicle's available space and plumbing requirements permit installation.
The CSF 8378 utilizes a dual-pass cooling configuration, directing coolant through two sections of the radiator core before exiting. This arrangement increases the coolant's travel distance through the heat exchanger, providing additional opportunities for heat transfer while maintaining a practical inlet and outlet layout.
At the center of the assembly is a substantial 705mm × 448mm × 68mm aluminum cooling core. Its large surface area and thick construction provide the heat-transfer capacity required by many high-output competition engines operating under sustained loads.
CSF's exclusive B-Tube technology enhances the radiator's cooling efficiency through specially designed coolant tubes that increase the effective contact area between the coolant and heat-transfer surfaces. Combined with high-efficiency multi-louvered cooling fins, this construction helps maximize cooling performance in demanding automotive applications.
One of the defining characteristics of the CSF 8378 is its same-side inlet and outlet configuration. This arrangement is especially beneficial for rear-mounted radiator conversions, where coolant lines often travel together from the engine compartment to a remotely mounted cooling assembly.
The radiator features -20AN ORB female-threaded inlet and outlet ports, providing compatibility with high-flow coolant plumbing systems when the appropriate adapter fittings are used. These connections can also be adapted for smaller AN plumbing configurations when properly engineered for the application.
Additional -12AN ORB auxiliary ports provide flexibility for incorporating coolant temperature sensors, expansion tank connections, bleeding provisions, and other custom cooling system accessories.
For mounting versatility, the CSF 8378 incorporates eight M8 × 1.25 threaded mounting bosses, with four positioned on each end tank. These mounting points allow fabricators to create secure brackets for a wide range of chassis and radiator locations.
Constructed entirely from aluminum with TIG-welded joints and a hand-brushed satin finish, the radiator combines structural durability with a professional motorsport appearance.
Unlike the CSF 8374, which includes a complete fan and shroud assembly, the CSF 8378 is supplied as the radiator-only version. This configuration is ideal for builders who already have compatible cooling fans or prefer to design their own fan shroud and airflow management system.
Whether developing a high-horsepower drift car, fabricating a rear-mounted cooling system, or upgrading a dedicated competition vehicle, the CSF 8378 provides premium radiator construction and the flexibility required for custom motorsport cooling applications.
Features
CSF Motorsport Competition Radiator: Engineered for demanding racing, drifting, and custom performance cooling applications.
Radiator-Only Configuration: Ideal for builders who prefer to select their own cooling fans and shroud.
Large Dual-Pass Radiator Core: Provides substantial heat-transfer capacity for high-output engines.
705mm × 448mm × 68mm Core Dimensions: Offers a large cooling surface for demanding motorsport use.
68mm Thick Aluminum Core: Provides substantial cooling capacity for custom high-performance applications.
CSF Exclusive B-Tube Technology: Designed to improve heat transfer compared with conventional oval welded radiator tubes.
High-Efficiency Multi-Louvered Fins: Helps maximize heat exchange between coolant and surrounding airflow.
Dual-Pass Coolant Configuration: Directs coolant through two sections of the radiator core.
Same-Side Inlet and Outlet Connections: Simplifies coolant hose routing in many custom installations.
100% TIG-Welded Aluminum Construction: Provides excellent strength and durability.
-20AN ORB Main Coolant Ports: Large threaded inlet and outlet connections support compatible high-flow plumbing.
-12AN ORB Auxiliary Ports: Provides additional connections for sensors, bleeding, and expansion tank plumbing.
Eight M8 × 1.25 Mounting Bosses: Offers multiple mounting points for custom fabrication.
Hand-Brushed Satin Aluminum Finish: Delivers a premium motorsport appearance.
Universal Application: Suitable for custom cooling systems across multiple vehicle makes and models.
Rear-Mounted Radiator Compatibility: Particularly useful for remote radiator installations.
Custom Fan Compatibility: Allows the builder to select fans and shrouds appropriate for the vehicle.
High-Horsepower Engine Applications: Designed for cooling systems supporting demanding engine configurations.
Professional Fabrication Compatibility: Suitable for custom brackets, coolant routing, and airflow management.
Individually Tested Construction: Manufactured with attention to radiator integrity and quality control.
Two-Year Limited Manufacturer Warranty: Backed by CSF's applicable warranty terms.
Popular Performance Applications
Professional Drift Cars: Suitable for custom cooling systems designed for sustained high-load operation.
Honda Civic K-Series Competition Builds: Provides a large-capacity radiator option for custom K20 and K24 applications.
Acura Integra Motorsport Builds: Suitable for fabricated cooling systems requiring additional heat-transfer capacity.
Honda S2000 Competition Builds: Can be incorporated into custom cooling systems for high-output naturally aspirated and turbocharged engines.
Honda Civic Type R Motorsport Builds: Provides a radiator option for custom applications where mounting space and coolant routing permit.
K-Series Engine Swaps: Suitable for custom K20 and K24 cooling systems requiring substantial radiator capacity.
Turbocharged Honda and Acura Applications: Supports cooling system development for high-output forced-induction engines.
Rear-Mounted Radiator Conversions: Particularly suitable for vehicles utilizing remote radiator placement.
BMW Drift Builds: Can be incorporated into custom competition cooling systems.
Nissan S-Chassis Drift Builds: Suitable for fabricated radiator installations in S13, S14, and other motorsport-oriented chassis.
Toyota Supra Performance Builds: Provides a potential cooling solution for high-horsepower custom racing configurations.
High-Horsepower V8 Swaps: Suitable for professionally engineered cooling systems supporting demanding engine swaps.
Time Attack and Circuit Racing: Provides substantial cooling capacity for competition vehicles operating under sustained loads.
Off-Road Racing Vehicles: Suitable for custom cooling systems in low-speed and high-load competition applications.
Custom Motorsport Fabrication: Provides a universal radiator foundation for specialized racing projects.
Important: These are potential custom applications, not confirmed direct-fit vehicle applications. The CSF 8378 requires application-specific mounting, plumbing, fan selection, and clearance verification.
Additional Information
- Manufacturer: CSF
- Part Number: 8378
- Product Type: Universal Motorsport Dual-Pass Radiator
- Radiator Construction: All-Aluminum, TIG-Welded
- Cooling Configuration: Dual-Pass
- Core Technology: CSF Exclusive B-Tube
- Cooling Fin Design: High-Efficiency Multi-Louvered
- Core Dimensions: 705mm W × 448mm H × 68mm D
- Overall Radiator Dimensions: 794.10mm W × 470mm H × 90mm D
- Main Coolant Inlet: -20AN ORB Female Thread
- Main Coolant Outlet: -20AN ORB Female Thread
- Main Port Thread Specification: 1-5/8"-12
- Auxiliary Ports: Two -12AN ORB Ports
- Auxiliary Port Thread Specification: 1-1/16"-12
- Mounting Provisions: Eight M8 × 1.25 Threaded Bosses
- Finish: Hand-Brushed Satin Aluminum
- Fan Configuration: Radiator Only – Fans Not Included
- Fan Shroud: Not Included
- Vehicle Fitment: Universal / Custom Motorsport Applications
- Installation Type: Custom Mounting and Plumbing Required
- Complete Radiator and Fan Module Alternative: CSF 8374
- Manufacturer Warranty: 2-Year Limited Warranty
Universal Fitment Information
The CSF 8378 is a universal motorsport radiator rather than a vehicle-specific direct-fit replacement.
Before ordering, verify the following:
Overall Radiator Width: Approximately 31.26 inches.
Overall Radiator Height: Approximately 18.50 inches.
Overall Radiator Depth: Approximately 3.54 inches.
Cooling Core Width: Approximately 27.76 inches.
Cooling Core Height: Approximately 17.64 inches.
Cooling Core Thickness: Approximately 2.68 inches.
Main Coolant Connections: -20AN ORB female threaded ports.
Auxiliary Connections: Two -12AN ORB ports.
Mounting Requirements: Eight M8 × 1.25 threaded mounting bosses.
Cooling Fan Requirements: Fans and a suitable shroud must be selected separately.
Available Airflow: Sufficient airflow must reach the radiator core.
Coolant Line Routing: Custom plumbing is required.
CSF B-Tube Radiator Technology
The CSF 8378 incorporates the manufacturer's exclusive B-Tube technology.
Unlike conventional oval welded radiator tubes, CSF's B-Tube design is engineered to increase the effective contact area between coolant passages and cooling surfaces.
CSF reports approximately 15% improved heat transfer compared with conventional oval welded tubes under its referenced testing conditions.
The radiator combines this technology with high-efficiency multi-louvered fins to maximize cooling efficiency.
The large core provides substantial coolant-to-air heat exchange capacity for demanding motorsport applications.
Dual-Pass Cooling Configuration
The CSF 8378 utilizes a dual-pass design that directs coolant through two sections of the radiator core before exiting.
This arrangement increases the distance coolant travels through the heat exchanger, providing additional opportunities for heat dissipation.
The same-side inlet and outlet layout can simplify coolant routing in custom installations, particularly rear-mounted radiator conversions.
Dual-pass cooling systems must be properly matched to the engine's coolant flow requirements, water pump capacity, and overall system design.
-20AN ORB Coolant Connections
The CSF 8378 features large -20AN ORB female threaded inlet and outlet ports.
These connections are designed to support high-flow coolant plumbing in demanding motorsport applications.
Compatible -20AN ORB adapter fittings can be used, while appropriately selected adapters may allow smaller AN hose configurations.
Important: The radiator ports are female ORB connections, not standard male AN flare fittings. Compatible ORB adapter fittings must be purchased separately.
-12AN ORB Auxiliary Ports
Two auxiliary -12AN ORB ports provide additional flexibility for custom cooling system integration.
Potential applications include coolant temperature sensors, expansion tank plumbing, overflow provisions, and system bleeding.
Any unused ports must be sealed with compatible plugs using the appropriate sealing method.
Custom Mounting Provisions
The CSF 8378 incorporates eight M8 × 1.25 threaded mounting bosses.
Four mounting points are located on each end tank.
This configuration allows fabricators to design secure mounting brackets for a variety of vehicle chassis and radiator locations.
Proper mounting is essential to prevent excessive vibration, movement, and mechanical stress on the radiator.
Rear-Mounted Radiator Applications
The CSF 8378 is particularly suitable for custom rear-mounted radiator installations.
Remote radiator placement can provide additional engine bay space and allow greater flexibility in heavily modified competition vehicles.
However, rear-mounted systems require careful planning of coolant line routing, air bleeding, expansion tank placement, and radiator airflow.
Because the CSF 8378 is supplied without fans or a shroud, the installer must also develop an appropriate airflow management system for the selected mounting location.
Radiator-Only vs. Complete Fan Module
The CSF 8378 and CSF 8374 share the same general radiator platform.
The primary difference is the included cooling hardware.
CSF 8378: Radiator-only configuration without cooling fans or a fan shroud.
CSF 8374: Complete radiator module supplied with a removable aluminum fan shroud, dual 14-inch SPAL brushless fans, and jumper harnesses.
The CSF 8378 is ideal for builders who already have compatible fans or prefer a custom fan configuration.
The CSF 8374 is better suited for applications where a complete radiator and fan assembly is desired.
Cooling Performance Information
The CSF 8378 is engineered for demanding motorsport cooling applications, but actual operating temperatures depend on the complete cooling system.
Important factors include engine output, coolant flow, airflow, ambient temperature, radiator placement, fan selection, and vehicle operating conditions.
Specific coolant temperature reductions or horsepower gains are not guaranteed.
Common Reasons for Replacement
Insufficient Factory Radiator Capacity: Provides a large competition-grade cooling solution for custom applications.
High-Horsepower Engine Builds: Supports cooling system development for engines producing substantial heat.
Professional Drifting Applications: Provides a radiator foundation for high-output cooling systems.
Rear-Mounted Radiator Conversions: Offers a suitable configuration for remote cooling installations.
Turbocharged Performance Builds: Helps address increased cooling demands in high-output engine configurations.
Damaged Competition Radiators: Replaces leaking or physically damaged cooling assemblies.
Custom Motorsport Fabrication: Provides a radiator-only solution for dedicated racing vehicles.
Custom Fan System Requirements: Allows builders to select their preferred cooling fans and shroud.
Cooling System Redesign: Provides a high-capacity radiator for vehicles undergoing major drivetrain or chassis modifications.
Custom AN Coolant Plumbing: Large ORB ports support compatible high-flow AN coolant line configurations.
Motorsport Reliability Upgrades: Provides TIG-welded aluminum construction and premium cooling core technology.
Integrated Cooling System Development: Offers a versatile radiator platform for custom competition cooling packages.
Installation Notes
Verify Application Requirements: Confirm that the CSF 8378 is appropriately sized for the intended engine and cooling system.
Measure Installation Space: Ensure adequate clearance for the radiator's overall dimensions.
Plan Radiator Orientation: Determine the correct mounting position for coolant routing, airflow, and service access.
Inspect the Vehicle Structure: Identify suitable mounting locations capable of supporting the radiator assembly.
Fabricate Mounting Brackets: Design brackets compatible with the eight M8 × 1.25 threaded mounting bosses.
Provide Adequate Support: Ensure the radiator is securely mounted without placing excessive stress on the end tanks.
Select Cooling Fans: Choose fans appropriate for the radiator size, airflow requirements, and intended vehicle use.
Design an Appropriate Fan Shroud: Ensure the selected fan arrangement provides effective airflow through the radiator core.
Verify Coolant Port Compatibility: Identify the -20AN ORB inlet and outlet connections.
Select Appropriate Adapter Fittings: Use compatible ORB fittings designed for the intended coolant hose size.
Plan Coolant Line Routing: Route hoses away from exhaust components, moving parts, and sharp edges.
Inspect Auxiliary Ports: Determine whether the -12AN ORB ports will be used for sensors, bleeding, or expansion tank connections.
Seal Unused Auxiliary Ports: Install compatible plugs using the appropriate sealing method.
Install Cooling Fans and Shroud: Secure the separately selected fan assembly according to the manufacturer's instructions.
Design Electrical Power Distribution: Provide suitable wiring, circuit protection, and fan control for the selected cooling fans.
Verify Electrical Compatibility: Confirm that the fan system is compatible with the vehicle's electrical system.
Install Appropriate Coolant Components: Incorporate the required expansion tank, pressure cap, and bleeding provisions.
Fill the Cooling System: Use coolant appropriate for the engine and cooling system materials.
Bleed Trapped Air: Remove air from the cooling system using procedures appropriate for the radiator mounting position.
Inspect for Leaks: Check all fittings, coolant connections, and auxiliary ports.
Test Fan Operation: Confirm that the selected cooling fans operate correctly.
Monitor Coolant Temperatures: Verify cooling system performance during initial engine operation.
Reinspect After Initial Operation: Check mounting hardware, coolant lines, and fan operation after several heat cycles.
Professional Installation Recommended: This universal motorsport radiator requires specialized fabrication and cooling system design.
Important: The CSF 8378 is not a complete vehicle-specific bolt-on radiator kit. Additional coolant fittings, hoses, brackets, cooling fans, shrouds, wiring, and other application-specific hardware may be required.
What's Included
(1) CSF Universal Motorsport Dual-Pass Aluminum Radiator (8378)
Integrated 68mm B-Tube Aluminum Cooling Core
Integrated TIG-Welded Aluminum End Tanks
Integrated -20AN ORB Inlet and Outlet Ports
Integrated Two -12AN ORB Auxiliary Ports
Integrated Eight M8 × 1.25 Mounting Bosses
Note: Cooling fans, fan shroud, electrical harnesses, main coolant adapter fittings, coolant hoses, and custom radiator mounting brackets are not included. Confirm whether auxiliary port plugs or other small hardware are supplied before installation.
Upgrade your motorsport cooling system with the CSF Universal Motorsport Dual-Pass Aluminum Radiator (8378), engineered to provide exceptional heat-transfer capacity, durable construction, and flexible custom installation options.
Featuring a massive 68mm dual-pass aluminum core, CSF B-Tube technology, -20AN ORB coolant connections, auxiliary -12AN ORB ports, and TIG-welded construction, this radiator provides a premium foundation for demanding high-performance cooling systems.
Whether building a professional drift car, engineering a rear-mounted radiator conversion, or developing a high-horsepower Honda, Acura, or other custom competition vehicle, the CSF 8378 delivers the advanced cooling technology and fabrication flexibility expected from CSF's motorsport product lineup.
| Part Number: | 8378 |
| Brand: | CSF |
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
This part does not have vehicle specific fitment. Please contact us if you need assistance.
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