CSF 3645 OE-Style Aluminum Core Radiator with Plastic Tank

The CSF 3645 is a direct-fit OE-style replacement radiator featuring aluminum core construction with engineered plastic tanks. Designed as a drop-in replacement, this radiator delivers reliable cooling performance with OEM-quality specifications.

Construction and Materials:

• Aluminum core with plastic tank construction for optimal heat dissipation
• Virgin grade engineered plastic resin tanks with glass-filled reinforcement for added strength and durability
• Special grade EPDM rubber gaskets that withstand extreme temperatures down to -120°F
• High-performance multi-louvered fin design for maximum cooling efficiency
• Welded tubes or latest generation B-Tube design
• Single-row core design with downflow configuration

Technical Specifications:

• Core dimensions: 30 3/8" width x 16 3/4" length x 7/8" thickness
• Inlet diameter: 1 5/16" (upper driver side location)
• Outlet diameter: 1 1/4" (lower driver side location)
• Integrated transmission cooler
• Natural finish

Quality Assurance:

• 100% leak tested at 150% of operating pressure before leaving the factory
• Individually tested through vibration-cycle, thermal-cycle, and burst pressure testing
• Wind tunnel tested for optimal core cooling efficiency
• Salt spray tested for corrosion protection
• 30-point fitment inspection on critical dimensions ensures drop-in fit
• Industry-best packaging with 10-foot drop test standard

CSF is known as "The Cooling Experts" with over 30 million cooling products sold worldwide. All CSF radiators are manufactured in ISO-certified facilities and undergo rigorous testing to ensure reliable performance and long service life.

OEM Cross-Reference Numbers: 19010-RK1-A52, 19010-RK1-A61, 19010-RK2-A01, 19010-RK2-A72, CU13121, CU13179, 221-3242, 221-9536, AC3010147, AC3010148