Innovative electrical product, based on the same design as the 421-ME, this electrical system is designed to be manually operated for troubleshooting in the event of missing power supply. This product is made of sturdy and durable material. The wireless remote control option is a wise and popular choice. This innovative system is excellent for its safety of operation.

Electrical Multi-Gear System with Manual Mode 521


Like all ElCargo’s mechanical tarp systems, the 521-EM can be fitted to almost any open top trailer. It offers the same benefits as all of ElCargo’s systems: water tightness, the toughness of their anchoring hooks, easy and quick to operate, and most of all, sizable fuel economy by as much as 14.93%. Versatile, they can handle any type of bulk transportation including sand, grain, hazmat, etc. ElCargo systems protect your cargo from bad weather, while also protecting the environment.


  • Sustainable electric motor
  • Multiple gear system
  • Innovative central mechanism assembly
  • External tensionner in the front
  • Internal tensionner at the rear
  • Optional wireless remote control
  • Three aluminum tubes: winding, center and anchoring
  • Aluminum bulkhead available in heights from 10′ to 16′
  • Central and rear robust steel cross bows
  • Rear bow with closing tarp
  • Approximate weight of system 190 kg (420 lbs)
  • Unmatched customer service
  • Fits most open roof trailer
  • Easy anchoring, no need for straps
  • Weatherproof cargo protection
  • Fuel saving by as much as 14.93%
  • 3-year warranty against all manufacturing defects and 2 years on the electrical componants
  • 21-ounce vinyl tarp and built-in reinforcement at contact point increase life
  • Complete color line

tarp colors
REF 1050
REF 1052
REF 1055
REF 1059
REF 1063
REF 1065
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REF 1075
REF 8284