Aluminum Radiator with Shroud for Mercury Cougar (1975-1979) 5.0L 5.8L 6.6L 7.5L

Direct-Fit High-Efficiency Aluminum Radiator and Shroud Kit for 1975-1979 Mercury Cougar

Primary Function: Replaces failure-prone factory copper-brass radiators with an integrated 3-row aluminum core and electric fan shroud assembly to eliminate overheating across small-block and big-block V8 engines.

The Stock Cougar Thermal Bottleneck

Factory 1975–1979 Cougar cooling systems relied on narrow-tube copper-brass cores sealed with lead solder, which degrade over time through galvanic corrosion and fin separation. Coupled with inefficient mechanical clutch fans, these original assemblies struggle to draw adequate airflow at idle and low RPM, leading to chronic heat soak and elevated coolant temperatures under the high thermal loads of 351, 400, and 460 cubic-inch powerplants.

The Engineering Solution

This all-aluminum cooling assembly utilizes a furnace-brazed 3-row core with TIG-welded end tanks, significantly increasing heat dissipation area and fluid capacity without structural epoxy. The integrated aluminum shroud and high-output electric fan deliver consistent static air pressure across the entire fin matrix regardless of engine speed, reducing low-speed thermal stress while eliminating parasitic mechanical drag from the crankshaft pulley.

Technical Specifications

Compatibility

• 1975-1979 Mercury Cougar (Base, XR-7, Brougham)
• 5.0L 302 cu in Windsor V8
• 5.8L 351 cu in Windsor / 351M V8
• 6.6L 400 cu in 335-Series V8
• 7.5L 460 cu in 385-Series V8

The Mercury Classic Caliber

Engineered to handle sustained engine loads and high-torque cruising, this cooling solution stabilizes operating temperatures during stop-and-go traffic and spirited highway driving, protecting vintage muscle powertrains from thermal degradation.