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Proponent is the fresh new identity representing over 115 years of collective experience of Kapco Global and Avio-Diepen offering innovative inventory and supply chain management solutions to both OEM and aftermarket customers. Supporting 4,500 customers in over 100 countries, over 860 MROs and over 500 Airlines, we work close together with our partners with locations and inventory located in close proximity for quick, reliable and cost efficient support.


  • Cabin, Cockpit and Interior Products

    Batteries, Flashlights, Evac and Survival, Exit & Emergency, Signage, ELT's, First Aid Kits, Lamps, Illuminated Panels, Headsets, Speakers, Interior P...

  • Electrical Interconnect

    Connectors, Wiring Accessories, Backshells, Terminal Boards, Conduit, Cable Trays, Terminals and Harness Accessories

  • Precision Mechanical Components

    Clamps, Brackets, Seals and Sealants, Latches, Hinges, Interior Hardware, Fuel Caps, Gas Springs and Dampers, Wheel and Break Components

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  • ProCart e-commerce 876 KB

    The newly designed ProCart e-commerce platform: Easily Access Your Order Information—Any Time, Any Place, Real-Time Inventory Stats, Bulk Search For Streamlined Estimati

    04 Mar 2020

  • Proponent Product Guide 1.36 MB

    OUR WORLD IS AEROSPACE PARTS But our passion is partnership. Any time, Anywhere, we are there...

    04 Mar 2020

  • ProOEM Electrical Interconnect 2.07 MB

    Proponent supports more than 380,000 critical aircraft parts for commercial, business, military, and rotary wing aircraft – all delivered on-time, anywhere in the world.

    05 Mar 2020


  • Contact Information


    3120 Enterprise St Brea CA 92821-6236 United States
    Tel:  +1 7142235470
    Fax:  +1 7142235570


  1. Product Categories
    In-flight Entertainment
    • IFEC Hardware
    Lighting / LED
    Plastic Mouldings
    Safety, Emergency & Security
    Wiring & Fibre Optics
  2. Company Activity