Radiator, Aluminum 2-Row Master Kit, 1970-78 AMC Gremlin, 1970-77 AMC Hornet - Drop ships in approx. 1-3 weeks


type: Radiator


  • P/N:  AMC-EC403-MC

This high-efficiency all-aluminum performance AMC radiator will end your cooling problems at a fraction of the weight & cost of brass copper radiators! This puts more money in your pocket. Each radiator includes a 16 lb radiator cap, a brass petcock valve, a transmission oil cooler, and an industry-leading limited lifetime manufacturer warranty.  This kit includes everything you need to convert your factory flex fan to an all-electric dual cooling fan with a high-performance aluminum radiator.


  • The 2-row design supports up to 600 horsepower
  • 40% better cooling than copper-brass radiators
  • 50-75% lighter than copper-brass radiators
  • Downflow style w/ high efficiency 14-16 louvered fins per inch
  • 100% all-aluminum tanks, fittings, & billet fill neck, 100% TIG welded seams, brazed core, & no epoxy or sealers
  • Dual 12" 10 amp electric low profile cooling fans with 870CFM each
  • Dual cooling fan relay kits (wiring harness, 30 amp fuses, relay, sensor, and wiring accessories)
  • Aluminum fan shroud
  • 2"x13" aluminum overflow tank kit


  • Includes: 16-lb. rated billet radiator cap, brass petcock valve & automatic transmission cooler
  • Core dimensions (H x W): 16" x 24 5/8"
  • Overall dimensions (H x W): 22 1/8" x 27 1/4"
  • Tank thickness: 2.25"
  • Core thickness: 2"
  • Hose locations:  Passenger - In / Driver - Out
  • Hose fittings: 1 1/2" in / 1 1/2" out
  • Trans cooler: 1/2-20 straight thread, G 1/4
  • Mounting type: Bracket mount
  • Manufacturer Warranty: Limited Lifetime
  • Shipping Weight:  17 lbs., Fan Shroud, Overflow, Two Fans & Relays
  • Shipping Dimensions:  20x6x30
  • Shipping Weight:  17 lbs., Radiator
  • Shipping Dimensions:  29x6x25
      AMC, American Motors, Rambler
      Models Years
      Hornet 1970-1977


      Installation Notes:  Approximate installation time is 7-8 hours (experienced mechanic times listed, yours may take longer).  Professional installation recommended.  Overflow hose routes on the passenger side. Longer hose & custom routing required. Drilling of radiator core support required. 3 & 4 core versions may not clear aftermarket clutch fans, aftermarket Sanden A/C compressors, & aftermarket serpentine drive systems. These applications may require using dual electric cooling fans & fan shroud.