CSF 3644 OE-Style Aluminum Core Replacement Radiator

The CSF 3644 is a direct-fit OE-style replacement radiator designed for multiple Honda and Acura applications. This single-row radiator features aluminum core construction with plastic tanks, engineered to match original equipment specifications for reliable cooling performance.

Construction Features:

• Plastic tank with aluminum core 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 engineered to withstand extreme temperatures down to -120°F
• High-performance multi-louvered fin design for maximum cooling efficiency
• Welded tube type or latest generation B-Tube design
• Downflow radiator style with 1-row configuration

Quality Assurance:

• 100% leak tested at 150% of operating pressure before leaving the factory
• Vibration-cycle tested for durability
• Thermal-cycle tested for temperature resilience
• Wind tunnel tested for optimal radiator core cooling efficiency
• Burst pressure and impulse-cycle tested for strength
• Salt spray tested for corrosion protection
• 10-foot box drop test to ensure packaging protection
• 30-point fitment inspection on critical dimensions for drop-in installation

Specifications:

• Core dimensions: 19-11/16" L x 30-1/16" W x 1-1/4" thick
• Inlet location: Upper driver side (1-1/4" diameter)
• Outlet location: Lower driver side (1-1/4" diameter)
• No integrated transmission cooler
• UPC: 710353036440

Manufactured in ISO/TSO certified facilities, CSF has been a trusted name in automotive cooling for over 50 years with more than 30 million units sold worldwide. Every CSF radiator is built to provide drop-in fitment with no modifications required.