Radiator Modified Dbl Pass 25in x 17.5in

The Radiator Modified Dbl Pass 25in x 17.5in from Fluidyne Performance is purpose-built for serious automotive enthusiasts and engine builders who demand superior cooling capacity without sacrificing underhood real estate. This double-pass radiator design addresses the cooling demands of modified and high-performance engines where stock cooling systems fall short. Whether you're running a naturally aspirated stroker, turbocharged build, or street-strip combination, this radiator provides the thermal management necessary to maintain safe operating temperatures under sustained hard driving, towing, or track conditions.

The double-pass core configuration forces coolant through multiple rows of the core matrix, dramatically increasing dwell time and heat rejection efficiency compared to single-pass designs. This engineering approach maximizes thermal transfer to the ambient air while minimizing parasitic pressure drop on the water pump. The 25-inch width by 17.5-inch height footprint is optimized for tight engine bay installations common in classic muscle cars, street rods, and compact high-performance platforms. At 16 pounds, the aluminum construction keeps weight gain minimal—critical for vehicles where every pound impacts handling and acceleration.

This radiator excels in applications where standard cooling capacity is insufficient but space constraints limit core size, making it ideal for engine transplants, restorations with modern powerplants, and vintage race cars running modern power. Verify inlet/outlet hose locations and mounting tabs against your specific application before ordering, as radiator fitment is vehicle and cooling system dependent. Professional installation with proper flushing of the cooling system and accurate thermostat selection will ensure optimal performance and longevity of both the radiator and engine.