Aluminum Radiator for Chrysler 300 (1966-1970) 7.2L

High-Efficiency 4-Row Aluminum Radiator for 1966-1970 Chrysler 300

Drop-In Cooling Upgrade: Engineered to replace deteriorated copper-brass factory radiators with a 4-row brazed aluminum core that maintains stable operating temperatures under high thermal loads.

The Stock 300 Thermal Bottleneck

Factory 1966–1970 Chrysler C-body cooling systems relied on narrow-tube copper-brass cores joined by lead solder. Over decades of heat cycling, solder bloom and internal corrosion create flow restrictions, while external fin oxidation impairs heat transfer. This thermal bottleneck causes rapid heat soak and dangerous temperature spikes in the high-displacement 440 big-block during prolonged idle or high-load cruising.

The Engineering Solution

This heavy-duty unit upgrades the system to an all-aluminum construction featuring precision TIG-welded end tanks and a 4-row furnace-brazed core. The wider cross-section tubes optimize coolant velocity while reducing internal pressure drop. By significantly increasing surface area contact, this radiator accelerates thermal dissipation and eliminates seam failure risks. Built-in internal transmission cooler routing and OEM bracket placement ensure direct-fit installation without structural modifications.

Technical Specifications

Compatibility

• 1966 Chrysler 300 Base 7.2L 440 cu in V8
• 1967 Chrysler 300 Base 7.2L 440 cu in V8
• 1968 Chrysler 300 Base 7.2L 440 cu in V8
• 1969 Chrysler 300 Base 7.2L 440 cu in V8
• 1970 Chrysler 300 Base / Hurst 7.2L 440 cu in V8

The Chrysler Muscle Standard

Formulated to support the high-torque output of Mopar big-block engines, this cooling assembly maintains consistent heat dissipation to preserve power delivery and prevent detonation under demanding driving conditions.