CSF 3901 Radiator

Reliable Cooling Solution for Chevrolet and GMC Trucks

The CSF radiator part number 3901 is engineered to provide efficient cooling performance for Chevrolet Silverado 1500 and GMC Sierra 1500 models. Designed with a durable aluminum core and plastic tanks, this radiator supports optimal engine temperature management under various driving conditions.

• Core thickness: 7/8 inch for effective heat dissipation
• Core dimensions: 19 3/16 inches width by 34 15/16 inches length
• Constructed with an aluminum core and plastic tanks for durability and corrosion resistance
• Cross flow design enhances coolant flow and heat exchange
• Inlet diameter: 1 5/16 inches (left side), outlet diameter: 1 9/16 inches (right side)
• Includes high-efficiency plate-type oil coolers on both left and right sides (11 1/2 inches)
• Single-row radiator core for streamlined cooling

Detailed Radiator Specifications and Features

The CSF 3901 radiator features a cross flow core type that improves coolant circulation across the aluminum core, maximizing heat transfer efficiency. The core thickness of 7/8 inch balances cooling capacity with compact design, suitable for the engine bay of Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. Plastic tanks reduce weight and resist corrosion, while the aluminum core provides reliable thermal conductivity. The radiator’s inlet and outlet diameters are precisely sized to match OEM specifications, ensuring compatibility and ease of installation. Additionally, the integrated high-efficiency plate-type oil coolers on both sides help maintain optimal oil temperatures, supporting engine longevity and performance.

Compatible Vehicles and Common Applications

• Replacement radiator for Chevrolet Silverado 1500 models requiring a 7/8 inch thick aluminum core radiator
• Suitable for GMC Sierra 1500 trucks needing a cross flow radiator with plastic tanks
• Addresses overheating issues caused by worn or damaged radiators
• Resolves coolant leaks from cracked or corroded radiator cores or tanks
• Improves engine cooling efficiency in trucks with OEM-style radiator requirements

Installation Notes and Tips

When installing the CSF radiator 3901, ensure all coolant hoses match the inlet and outlet diameters of 1 5/16 inches (left) and 1 9/16 inches (right) respectively. Verify the cross flow orientation aligns with the vehicle’s cooling system layout. Since the radiator does not include a cap, reuse the existing OEM cap or source a compatible replacement. Inspect and replace any worn mounting hardware or seals to prevent leaks. Properly bleed the cooling system after installation to avoid air pockets and ensure optimal performance.

Quality Assurance and Warranty Information

CSF radiators are manufactured to meet or exceed OEM standards, using corrosion-resistant aluminum cores and durable plastic tanks. The part number 3901 undergoes rigorous quality control to ensure reliable fitment and performance for Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles. While specific warranty details are not provided here, CSF products typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or manufacturer for exact warranty terms.