Radiators for LS Engine Swaps

Flex-a-lite® now has a line of performance aluminum radiators specifically for LS engine swaps in popular muscle cars, trucks and Jeeps. The Flex-a-fit® radiators made by Flex-a-lite feature dual-pass design with the inlet and outlet on the passenger side tank. The Inlet is 1.25 inch in diameter, and outlet is 1.50 inch. The passenger sidetank includes a ¼-inch NPT bung for the steam port tube.

Flex-A-Lite Extruded Tube Core Performance Radiators Flex-A-Lite Extruded Tube Core Performance Radiators

Here are 10 reasons the Flex-A-Lite® Extruded Tube Core Performance Radiators are the best choice:

1. New Flex-A-Lite® performance radiators use a unique Extruded Tube Core technology, replacing multi-core radiators with an advanced design

2. The Extruded Tube Core increases contact area between coolant and the extruded tubes for better heat rejection and cooling

3. The Extruded Tube Core provides a flat surface to braze the cooling fins to, maximizing the contact between the tubes and fins for increased heat rejection and better cooling

4. The cooling fins have been designed with louver patterns cut into them to direct airflow, improving heat rejection and cooling

5. Wind tunnel testing has shown that this Extruded Tube Core technology is significantly more efficient for cooling than standard tube radiators

6. The Flex-A-Lite® Extruded Tube Core Radiators are significantly stronger and have a 100-psi burst rating

7. Flex-A-Lite® Extruded Tube Core Radiators include a corner subhead, reinforcing the cooling tube to header connection; an area prone to cracking and leaking in other brands of aluminum radiators

8. Direct-fit applications bolt in without any drilling or cutting

9. Flex-A-Lite® Extruded Tube Core Radiators are available both with and without a Flex-A-Lite® electric fan installed at the factory

10. The Extruded Tube Core Radiators come with an exclusive Flex-A-Lite® 2-year transferable warranty. Click here for details.

Flex-A-Lite Extruded Tube Core Radiators Flex-A-Lite Extruded Tube Core Radiators

The unique Flex-A-Lite® Extruded Tube Core is extremely strong, and the internal-passage volume increases the contact area between coolant and the aluminum tubes. The extruded tubes provide a flat, optimum surface to braze the cooling fins to. This maximizes the contact between the tubes and fins for increased heat rejection and better cooling. The cooling fins have been designed with specific louver patterns punched into them to direct airflow, increasing heat rejection and providing better cooling performance.

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  1. Flex-A-Lite Extruded Core Universal Radiator 34 x 20 LS Engine with Dual Electric Fans

    Flex-A-Lite Extruded Core Universal Radiator 34 x 20 LS Engine with Dual Electric Fans

    Part Number: 312861
    Flex-A-Lite® 34 x 20 universal performance aluminum radiator for LS engine swaps featuring Extruded Core Technology with fully-shrouded dual electric fan system. Better cooling, stronger and more durable construction with less weight. Learn More
  2. Flex-A-Lite Extruded Core Universal Radiator 34 x 20 LS Engine

    Flex-A-Lite Extruded Core Universal Radiator 34 x 20 LS Engine

    Part Number: 312801
    Flex-A-Lite® 34 x 20 universal performance aluminum radiator featuring Extruded Core Technology for LS engine swaps. Better cooling, stronger and more durable construction with less weight. Learn More
  3. Flex-A-Lite Extruded Core Universal Radiator 28 x 20 LS Engine with Electric Fan

    Flex-A-Lite Extruded Core Universal Radiator 28 x 20 LS Engine with Electric Fan

    Part Number: 312261
    Flex-A-Lite® 28 x 20 universal performance aluminum radiator for LS engine swaps featuring Extruded Core Technology with fully-shrouded Black Magic Xtreme S-Blade electric fan. Better cooling, stronger and more durable construction with less weight. Learn More
  4. Flex-A-Lite Extruded Core Universal Radiator 28 x 20 LS Engine

    Flex-A-Lite Extruded Core Universal Radiator 28 x 20 LS Engine

    Part Number: 312201
    Flex-A-Lite® 28 x 20 universal performance aluminum radiator featuring Extruded Core Technology for LS engine swaps. Better cooling, stronger and more durable construction with less weight. Learn More
  5. Flex-A-Lite Extruded Core Radiator and Electric Fan 1987-2006 Jeep Wrangler YJ and TJ LS Engine

    Flex-A-Lite Extruded Core Radiator and Electric Fan 1987-2006 Jeep Wrangler YJ and TJ LS Engine

    Part Number: 315761
    Direct-fit Flex-A-Lite® Extruded Core performance aluminum radiator with fully-shrouded Black Magic S-Blade electric fan for 1987-2006 Jeep Wrangler YJ and TJ with LS engine swap. Learn More
  6. Flex-A-Lite Extruded Core Radiator and Electric Fan 1979-1993 Fox Body Mustang LS Engine

    Flex-A-Lite Extruded Core Radiator and Electric Fan 1979-1993 Fox Body Mustang LS Engine

    Part Number: 315561
    Direct-fit Flex-A-Lite® Extruded Core performance aluminum radiator with fully-shrouded Black Magic Xtreme S-Blade electric fan for 1979-1993 Fox Body Mustang with LS engine swap. Learn More
  7. Flex-A-Lite Extruded Core Radiator and Electric Fan 1973-1986 Jeep CJ LS Engine

    Flex-A-Lite Extruded Core Radiator and Electric Fan 1973-1986 Jeep CJ LS Engine

    Part Number: 315861
    Direct-fit Flex-A-Lite® Extruded Core performance aluminum radiator with fully-shrouded Black Magic S-Blade electric fan for 1973-1986 Jeep CJ with LS engine swap. Learn More
  8. Flex-A-Lite Extruded Core Radiator and Electric Fan 1964-1967 Chevelle and other GM A-Bodies LS Engine

    Flex-A-Lite Extruded Core Radiator and Electric Fan 1964-1967 Chevelle and other GM A-Bodies LS Engine

    Part Number: 316161
    Direct-fit Flex-A-Lite® Extruded Core performance aluminum radiator and electric fan for 1964-1967 Chevelle and other GM A-Bodies. Learn More
  9. Flex-A-Lite Extruded Core Radiator and Dual Electric Fans 1973-1987 Full Size 1/2-ton GM Truck and SUV LS Engine

    Flex-A-Lite Extruded Core Radiator and Dual Electric Fans 1973-1987 Full Size 1/2-ton GM Truck and SUV LS Engine

    Part Number: 315161
    Direct-fit Flex-A-Lite® Extruded Core performance aluminum radiator and dual electric fan system for 1973-1987 full-size 1/2-ton Chevrolet or GMC truck and SUV with LS engine swap. Learn More
  10. Flex-A-Lite Extruded Core Radiator and Dual Electric Fans 1968-1972 Chevelle and other GM A-Bodies LS Engine

    Flex-A-Lite Extruded Core Radiator and Dual Electric Fans 1968-1972 Chevelle and other GM A-Bodies LS Engine

    Part Number: 316061
    Direct-fit Flex-A-Lite® Extruded Core performance aluminum radiator and dual electric fan system for 1968-1972 Chevelle and other GM A-Bodies LS Engine with LS engine swap. Learn More

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