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  • Engine
  • Drivetrain
  • Underwater Hardware
  • Maintenance
  • Accessories
  • Clothing, Hats, and Gifts

    • Shop by Brand

  • View all Brands

    • Diagnostic Tools

    Don't waste time guessing what's wrong with your boat's engine. Marine diagnostic tools allow you to easily scan a marine engine to determine if something is malfunctioning or inoperable. At Discount Inboard Marine, we carry the marine engine diagnostic tools you need to determine the problem safely and efficiently — every time. Our selection of marine diagnostic tools includes a timing tool and a MEFI code reader. The marine diagnostic scan tool can be used for engine monitoring, malfunction trouble code reading, data logging and more. Find your new marine diagnostic tools today with the help of Discount Inboard Marine.

    • HARNESS, TEST W/ KEY SWITCH
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      HARNESS, TEST W/ KEY SWITCH

      Key switch harness for PCM engine. If you are trying to troubleshoot a running issue, there are times when it is a good idea to bypass the boat's wiring/keypad system. This can also be helpful for operating the engine when you are working on it, to save...
      $186.20
      Add to Cart
    • DELCO TIMING TOOL DELCO TIMING TOOL
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      DELCO TIMING TOOL

      Used to put Delco Distributors into service mode for timing carbureted and EFI engines.   Instructions: Remove 4 pin connectors from the base of the distributor and install timing tool in its place. For carbureted engines Start the engine and then...
      $25.90
      Add to Cart
    • CODE-MATE EFI CODE READER
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      CODE-MATE EFI CODE READER

      * Works On GM Based MEFI 1- MEFI 4* Reads Fault Codes And To Set Ignition Timing* Perfect For Low Volume Repair/Troubleshoot*Not for use with MEFI 5 or 2001 and newer Mercruiser ECM-555 or PCM-555.* Not for use on 2006 up Indmar (MEFI 5) or 2007 up PCM...
      $99.00
      Add to Cart
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