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Welcome to LENCO... Your #1 Source for Replacement Marine Heat Exchangers and Oil Coolers
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LENCO has been manufacturing Marine Engine Heat Exchangers and Marine Engine Oil Coolers for marine engines since 1972.  We stock direct replacement coolers for major engine manufacturers.  Additionally, our expertise and experience permit us to offer upgraded units where we have found the original equipment to be undersized or otherwise inadequate.

Select manufacturer below to find your Replacement Unit:
  • Oil Coolers
  • Chris Craft
  • Chrysler
  • Covington
  • Crusader
  • Cummins
  • Detroit Diesel
  • Indmar
  • Isuzu
  • Johnson & Towers
  • Lehman
  • Mercruiser
  • Marine Power
  • Onan
  • Perkins
  • Pleasurecraft
  • Stewart and Stevenson
  • Universal
  • US Marine
  • Volvo
  • Westerbeke
  • Heat Exchanger Accessories
  • Surge Tanks
    • Cooling marine engines is our only business!  We have the knowledge to answer all your techincal questions regarding the performance of your engine's cooling system.
    As manufacturers, we understand that only top quality materials and exceptional workmanship will do.  Because of this, we are able to offer our customers a 3-year pleasure boat (1-year commercial) warranty on all our units.  LENCO can even produce custom-made coolers and heat exchangers at competitive prices.
    LENCO Coolers - In Stock and Priced Right!