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Product Details
The CSF Universal Motorsport Dual-Pass Radiator with Dual 14-Inch SPAL Brushless Fans (8374) is a premium, competition-grade cooling system engineered for high-horsepower racing applications, professional drifting, and custom motorsport builds. Featuring a massive dual-pass aluminum radiator, CSF's exclusive B-Tube technology, a TIG-welded aluminum fan shroud, and two high-output SPAL brushless cooling fans, this complete radiator module delivers exceptional cooling capacity for demanding performance environments.
Developed in collaboration with experienced motorsport teams and professional drift builders, including Drift HQ, the CSF 8374 was designed to address the cooling challenges associated with sustained high engine loads, limited vehicle speed, and unconventional radiator mounting locations.
Unlike conventional street-oriented radiators, the CSF 8374 is engineered specifically for applications where maximum cooling capacity and reliable airflow are critical. Its large core and powerful electric fan system make it particularly attractive for drift vehicles, rear-mounted radiator installations, and custom competition vehicles that experience extended periods of reduced natural airflow.
At the center of the assembly is a massive dual-pass aluminum radiator featuring a 705mm × 448mm × 68mm core. This substantial cooling surface provides increased heat-transfer capacity for high-output engines operating under demanding conditions.
The radiator utilizes CSF's exclusive B-Tube technology, which is designed to increase heat transfer compared with conventional oval welded radiator tubes. Combined with high-efficiency multi-louvered cooling fins, this construction helps maximize the radiator's ability to transfer heat from engine coolant to the surrounding air.
One of the defining characteristics of the CSF 8374 is its dual-pass coolant configuration. Rather than flowing through the radiator core only once, coolant travels through two sections of the core before exiting. This arrangement increases the coolant flow path while providing a balance between heat dissipation and cooling system pressure drop.
The dual-pass design also positions the main inlet and outlet connections on the same side of the radiator. This arrangement can simplify coolant hose routing, particularly in rear-mounted radiator installations where long coolant lines must be routed through the vehicle.
To provide exceptional airflow at low vehicle speeds, the CSF 8374 includes two 14-inch SPAL brushless electric cooling fans, each capable of moving up to 2,395 CFM. Together, the fans provide a manufacturer-rated combined airflow capacity of 4,790 CFM under their specified operating conditions.
The fans are mounted to a precision-fabricated, TIG-welded aluminum shroud designed to direct airflow through the radiator core. This integrated configuration is especially beneficial in drifting, off-road racing, and other applications where vehicle speed alone may not provide sufficient airflow.
The fan shroud is removable and can be installed on either side of the radiator, allowing additional flexibility when configuring custom cooling systems. The fans can also be positioned in multiple orientations to help accommodate different wiring and mounting requirements.
For high-flow coolant plumbing, the CSF 8374 features -20AN ORB threaded inlet and outlet ports. These large connections support compatible -20AN fittings and can also be adapted for -16AN plumbing when appropriate fittings are used.
Additional -12AN ORB auxiliary ports provide options for coolant temperature sensors, bleeding provisions, overflow connections, or expansion tank plumbing.
The radiator also incorporates eight M8 × 1.25 threaded mounting bosses, with four located on each end tank. These provisions allow fabricators to design secure mounting brackets for front-mounted, rear-mounted, and other custom installations.
Constructed entirely from aluminum with TIG-welded joints and a hand-brushed satin finish, the CSF 8374 combines structural durability with professional motorsport styling.
Whether developing a high-horsepower drift car, building a custom rear-mounted cooling system, or upgrading a dedicated competition vehicle, the CSF 8374 delivers a comprehensive high-performance cooling solution designed for demanding motorsport applications.
Features
CSF Motorsport Competition Radiator: Designed for demanding racing, drifting, and custom high-performance cooling applications.
Complete Radiator and Fan Module: Includes the aluminum radiator, removable fan shroud, dual SPAL brushless fans, and jumper harnesses.
Large Dual-Pass Radiator Core: Provides substantial heat-transfer capacity for high-output engines.
705mm × 448mm × 68mm Core Dimensions: Massive cooling surface designed for demanding motorsport use.
68mm Thick Radiator Core: Provides a substantial cooling core for increased thermal capacity.
CSF Exclusive B-Tube Technology: Engineered to improve heat transfer compared with conventional oval welded radiator tubes.
High-Efficiency Multi-Louvered Fins: Maximizes heat-transfer surface area and airflow interaction.
Dual-Pass Coolant Configuration: Extends the coolant flow path through the radiator.
Same-Side Inlet and Outlet Connections: Simplifies plumbing arrangements for many custom and rear-mounted installations.
100% TIG-Welded Aluminum Construction: Provides structural strength and durability for demanding applications.
Dual 14-Inch SPAL Brushless Fans: Includes two premium electric cooling fans.
4,790 CFM Combined Rated Fan Airflow: Each fan is rated at 2,395 CFM under specified operating conditions.
500-Watt Fan Rating: Each SPAL brushless fan features a manufacturer-listed 500-watt rating.
Removable Aluminum Fan Shroud: Precision-fabricated shroud directs airflow through the radiator core.
Reversible Shroud Mounting: Shroud can be installed on either side of the radiator.
Adjustable Fan Orientation: Fans can be clocked into four positions for installation and wiring flexibility.
Included SPAL Jumper Harnesses: Provides two jumper harnesses for integration into a custom electrical system.
-20AN ORB Main Coolant Ports: Large threaded inlet and outlet connections support high-flow coolant plumbing.
-12AN ORB Auxiliary Ports: Provides additional connection options for sensors, bleeding, and cooling system accessories.
Eight M8 × 1.25 Mounting Bosses: Offers multiple secure mounting locations for custom fabrication.
Hand-Brushed Satin Aluminum Finish: Delivers a clean, professional motorsport appearance.
Individual Leak and Pressure Testing: Each radiator is tested during manufacturing.
Rear-Mounted Radiator Compatibility: Designed with remote and rear-mounted cooling configurations in mind.
Professional Drift Development: Engineered with input from experienced drift teams and builders.
Two-Year Limited Manufacturer Warranty: Backed by CSF's applicable warranty terms.
Popular Performance Applications
Professional Drift Cars: Engineered for competition vehicles that experience limited natural airflow while drifting.
Honda Civic K-Series Drift Builds: Suitable for custom K20 and K24 competition cooling systems where adequate installation space is available.
Acura Integra Motorsport Builds: Provides a large-capacity radiator option for custom racing applications.
Honda S2000 Competition Builds: Suitable for fabricated cooling systems on high-output naturally aspirated or turbocharged engines.
K-Series Engine Swaps: Can be incorporated into custom K20 and K24 cooling systems requiring substantial heat-transfer capacity.
Turbocharged Honda and Acura Applications: Provides a cooling solution for high-output engines with demanding thermal requirements.
Rear-Mounted Radiator Conversions: Particularly suitable for vehicles utilizing remote radiator placement.
BMW Drift Builds: Can be incorporated into custom competition cooling systems for appropriately configured chassis.
Nissan S-Chassis Drift Builds: Suitable for fabricated cooling installations in S13, S14, and other drift-oriented projects.
Toyota Supra Motorsport Builds: Provides a potential cooling solution for high-horsepower custom racing configurations.
High-Horsepower V8 Swaps: Suitable for custom cooling systems supporting demanding engine swap applications.
Time Attack and Circuit Racing: Provides substantial cooling capacity for competition vehicles operating under sustained high loads.
Off-Road Racing Vehicles: Suitable for custom cooling systems in rock crawlers and other low-speed competition applications.
Trophy Trucks and Desert Racing Builds: Provides high-output electric airflow and substantial radiator capacity for custom racing installations.
Custom Motorsport Fabrication: Suitable for professionally engineered cooling systems where radiator size, plumbing, and electrical requirements are compatible.
Important: These are potential custom applications rather than confirmed direct-fit vehicle applications. The CSF 8374 is a universal motorsport radiator module that requires application-specific mounting, plumbing, electrical integration, and clearance verification.
Additional Information
- Manufacturer: CSF
- Part Number: 8374
- Product Type: Universal Motorsport Dual-Pass Radiator and Fan Module
- 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
- Radiator Overall Dimensions: 794.10mm W × 470mm H × 90mm D
- Complete Assembly Dimensions: 794.10mm W × 470mm H × 172.56mm 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
- Fan Quantity: Two
- Fan Manufacturer: SPAL
- Fan Model: ABL505P
- Fan Part Number: 30107102
- Fan Diameter: 14 Inches / 355mm
- Fan Type: Brushless Electric Puller
- Fan Voltage: 12V
- Fan Power Rating: 500 Watts Each
- Rated Airflow Per Fan: 2,395 CFM
- Combined Rated Fan Airflow: 4,790 CFM
- Fan Shroud: Removable TIG-Welded Aluminum
- Fan Harnesses: Two SPAL SBL-YAZ-PT10 Jumper Harnesses
- Finish: Hand-Brushed Satin Aluminum
- Vehicle Fitment: Universal / Custom Motorsport Applications
- Installation Type: Custom Mounting, Plumbing, and Electrical Integration Required
- Radiator-Only Alternative: CSF 8378
- Manufacturer Warranty: 2-Year Limited Warranty
Universal Fitment Information
The CSF 8374 is a universal motorsport cooling system rather than a vehicle-specific direct-fit radiator.
Before ordering, verify the following:
Complete Assembly Width: Approximately 31.26 inches.
Complete Assembly Height: Approximately 18.66 inches.
Complete Assembly Depth: Approximately 6.79 inches.
Radiator-Only Depth: Approximately 3.54 inches.
Main Coolant Connections: -20AN ORB female threaded ports.
Auxiliary Connections: Two -12AN ORB ports.
Mounting Requirements: Eight M8 × 1.25 threaded mounting bosses.
Electrical Requirements: Appropriate 12V electrical supply and compatible brushless fan control.
Available Airflow: Sufficient airflow must reach the radiator core.
Coolant Line Routing: Custom plumbing is required.
System Compatibility: Radiator capacity, coolant flow, pressure, and operating temperature must be appropriate for the intended engine.
CSF B-Tube Radiator Technology
The CSF 8374 incorporates the manufacturer's exclusive B-Tube technology.
Unlike conventional oval welded radiator tubes, CSF's B-Tube design is engineered to improve heat transfer by increasing the effective contact area between coolant passages and the 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 8mm multi-louvered fins to maximize cooling efficiency.
The large core features 44 rows of cooling tubes, providing substantial coolant-to-air heat exchange capacity.
Dual-Pass Cooling Configuration
The dual-pass design directs coolant through two sections of the radiator core before it exits.
This configuration increases the distance coolant travels through the heat exchanger, allowing additional opportunities for heat dissipation.
CSF selected the dual-pass arrangement to balance cooling performance with coolant flow resistance.
The same-side inlet and outlet layout also makes it easier to route coolant lines together in many remote radiator installations.
Dual SPAL Brushless Fan System
The CSF 8374 includes two SPAL 14-inch brushless electric cooling fans.
Each fan is rated to deliver up to 2,395 CFM, providing a combined manufacturer-rated airflow of 4,790 CFM.
The brushless fan design offers electronically controlled operation suitable for high-performance cooling applications.
The fans are integrated into a precision-fabricated aluminum shroud designed to help direct airflow through the radiator core.
This arrangement is especially beneficial in drifting and low-speed motorsport environments where natural airflow is limited.
Important: The included jumper harnesses provide electrical connections for the fans, but proper power distribution, circuit protection, and compatible fan control must be engineered for the vehicle.
Removable Aluminum Fan Shroud
The included fan shroud is constructed from laser-cut, TIG-welded aluminum.
It can be mounted on either side of the radiator, providing flexibility for custom installations.
The fans can also be clocked into four different positions to simplify electrical routing.
This modular construction allows fabricators to adapt the radiator assembly to a variety of chassis configurations.
-20AN ORB Coolant Connections
The CSF 8374 features large -20AN ORB female threaded inlet and outlet ports.
These ports are designed to support high-flow coolant plumbing in demanding motorsport applications.
Compatible -20AN fittings can be used, while appropriately selected adapters can allow -16AN plumbing.
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 uses include coolant temperature sensors, expansion tank plumbing, overflow provisions, and system bleeding.
The radiator includes plugs for these auxiliary ports.
Any unused ports must remain properly sealed.
Custom Mounting Provisions
The radiator features eight M8 × 1.25 threaded mounting bosses.
Four mounting points are located on each end tank.
This configuration provides multiple options for custom brackets, support cradles, and structural mounting assemblies.
Proper mounting is essential to prevent excessive vibration, movement, or mechanical stress.
Rear-Mounted Radiator Applications
The CSF 8374 was developed with rear-mounted motorsport cooling systems in mind.
Remote radiator placement can create additional space in the engine compartment and provide packaging flexibility for heavily modified competition vehicles.
However, rear-mounted installations require careful planning of coolant line routing, air bleeding, expansion tank positioning, and radiator airflow.
The complete system must be designed to maintain reliable coolant circulation under demanding operating conditions.
Cooling Performance Information
The CSF 8374 is engineered for demanding cooling applications, but actual operating temperatures depend on the complete vehicle cooling system.
Important factors include engine output, coolant flow, airflow, ambient temperature, radiator placement, fan control, 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 high-output fan airflow when vehicle speed does not supply adequate natural airflow.
Rear-Mounted Radiator Conversions: Offers a purpose-developed radiator 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 complete radiator and fan module for dedicated racing vehicles.
Low-Speed Competition Use: Delivers powerful electric fan airflow for demanding low-speed operating conditions.
Cooling System Redesign: Offers 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 SPAL brushless cooling fans.
Integrated Fan System Upgrade: Includes a removable shroud and two high-output fans in one module.
Installation Notes
Verify Application Requirements: Confirm that the CSF 8374 is appropriately sized for the intended engine and cooling system.
Measure Installation Space: Ensure adequate clearance for the complete radiator and fan assembly.
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 complete 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.
Verify Fan Shroud Position: Determine which side of the radiator is appropriate for the fan shroud.
Install the Shroud: Secure the removable aluminum shroud using the supplied mounting hardware.
Confirm Fan Orientation: Position the fans appropriately for airflow direction and electrical routing.
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 the supplied plugs using the appropriate sealing method.
Install Fan Jumper Harnesses: Connect the included SPAL jumper harnesses to the fan assemblies.
Design Electrical Power Distribution: Provide suitable wiring, circuit protection, and fan control for the electrical load.
Verify Electrical Compatibility: Follow SPAL's installation requirements for brushless fan operation.
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 both fans operate correctly under the intended control conditions.
Monitor Coolant Temperatures: Verify cooling system performance during initial engine operation.
Reinspect After Initial Operation: Check mounting hardware, electrical connections, and coolant lines after several heat cycles.
Professional Installation Recommended: This universal motorsport radiator requires specialized fabrication, cooling system design, and electrical integration.
Important: The CSF 8374 is not a complete vehicle-specific bolt-on radiator kit. Additional coolant fittings, hoses, brackets, wiring, control components, and other application-specific hardware may be required.
What's Included
(1) CSF Universal Motorsport Dual-Pass Aluminum Radiator
(1) Removable TIG-Welded Aluminum Fan Shroud
(2) SPAL 14-Inch Brushless Electric Cooling Fans (30107102)
(2) SPAL Fan Jumper Harnesses (SBL-YAZ-PT10)
Fan Shroud Mounting Hardware
Auxiliary -12AN ORB Port Plugs
Note: Main -20AN ORB adapter fittings, coolant hoses, custom radiator mounting brackets, fan controllers, and other application-specific installation components are not included unless separately specified.
Take your motorsport cooling system to the next level with the CSF Universal Motorsport Dual-Pass Radiator with Dual 14-Inch SPAL Brushless Fans (8374), engineered to deliver exceptional heat-transfer capacity, powerful electric airflow, and professional-grade durability.
Featuring a massive 68mm dual-pass aluminum core, CSF B-Tube technology, -20AN ORB coolant connections, a removable TIG-welded aluminum shroud, and dual SPAL brushless fans rated for a combined 4,790 CFM, this complete radiator module provides an advanced cooling solution for demanding competition applications.
Whether building a professional drift car, engineering a rear-mounted radiator system, or developing a high-horsepower Honda, Acura, or other custom motorsport project, the CSF 8374 delivers the cooling capacity, fabrication flexibility, and premium components expected from CSF's performance cooling lineup.
| Part Number: | 8374 |
| 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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