Dura Cooler Keel Coolers

DuraCooler® Keel Coolers are custom-engineered marine heat exchangers designed to provide efficient, dependable cooling for main engines, auxiliary engines, and other onboard heat sources. With a streamlined header design, one-piece 90/10 copper-nickel construction, and flexible through-hull or flange-mount configurations, DuraCooler delivers superior heat transfer, durability, and installation versatility for demanding vessel applications.

Short Feature Bullets

  • Custom-engineered for vessel-specific cooling needs
  • Streamlined header design for improved heat transfer
  • One-piece 90/10 copper-nickel construction
  • Available in through-hull and flange-mount designs
  • Single-pass and double-pass plumbing options
  • Built for demanding commercial marine service

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Authorized Distributor

Palmer Johnson is an authorized distributor and service provider for Duramax Marine products.

Genuine Parts

Thousands of parts ready to ship in as little as two hours.

Service and Support

Seven master rebuild centers, eleven full-service centers, and an extensive dealer network to serve you.