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  • Engine
  • Drivetrain/Silencers
  • Underwater-Gear/Steering
  • Maintenance
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  • Clothing, Hats, and Gifts

    • Shop by Brand

  • ARCO
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  • View all Brands

    • Maintenance

    Nothing will kill the fun faster than a boat that won't start due to a mechanical malfunction. Avoid the headache and save yourself time and money by doing the proper preventative upkeep and repairs on your watercraft. At Discount Inboard Marine, we carry a wide variety of boat maintenance products to help keep your watercraft running at its very best. Shop for boat repair supplies, boat maintenance products, spark plugs, oils and fluids, flush kits and much more. Make Discount Inboard Marine your one-stop-shop for boat maintenance supplies and repair products.

    • SPARK PLUG KIT 302/351 (14MM) SPARK PLUG KIT 302/351 (14MM)
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      SPARK PLUG KIT 302/351 (14MM)

      Spark Plug Set Ford 302 351 14mm Autolite #24 RP030002 at Discount Inboard Marine. Spark plugs Recommended by the manufacturers for optimum performance, these spark plugs are the correct heat range for your marine engine. Spark Plugs: Autolite...
      $34.25
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    • REPAIR KIT 4160 351 REPAIR KIT 4160 351
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      REPAIR KIT 4160 351

      Our 4160 Holley Carb Rebuild Kit (RN0120-1) fits 351 - 350 - 5.8 - 5.7 engines. Each Holley Carburetor Rebuild Kit contains all the parts and gaskets necessary to restore like-new performance to your marine carburetor. Detailed instructions are also...
      $62.40
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    • ANODE ZINC 1/4
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      ANODE ZINC 1/4

      All PCM/SeaMaxx Ford GT40 EFI and 302/351Carbureted. Most PCM/SeaMaxx GM 5.7, 5.0L, 7.4L, 8.1L, 8.2L. (Not 6.0L) Bin Number (ISBN): 90108
      $11.89
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    • GASKET T-STAT COVER NMR TRIANGULAR
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      GASKET T-STAT COVER NMR TRIANGULAR

      ALL FORD AND CHEVY THRU 97 AFTER 98 IT COULD BE ITEM # 0731. This gasket was still used on the carb and TBI engines past '97 thru 2002, i.e. Preditor all LT1 THERMOSTATS can fail and should be tested or replaced if questionable. The type of thermostat...
      $3.50
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    • Impeller Kit W/ O'Ring (GM)
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      Impeller Kit W/ O'Ring (GM)

      Fits PCM GM 305, 350 & 454 thru 2003 and 75 up Ford Escort. Not for 2004 and up PCM Serpentine Belt pumps. W 1-5/8", D 2-9/16" keyed shaft. This is an original equipment Sherwood kit and includes gaskets and o-ring (as required). Replaces PCM PT#...
      $40.75
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    • OIL DRAIN KIT 302/351/GM OIL DRAIN KIT 302/351/GM
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      OIL DRAIN KIT 302/351/GM

      UP TO 1985 FORD AND 1995 GM* GM engines need a minimum 1" clearance between pan & hull . Hose length 4 feet.   Drain your oil with ease with this great little drain kit! Connects to your oil pan drain plug and drains oil out the hole in the...
      $45.25
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    • CARB KIT, 4150, NMR PT # 61-1015
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      CARB KIT, 4150, NMR PT # 61-1015

      Indmar 5.7 and some 454's have the Holley 4150 carb. Rebuild it and renew your carburetor with this kit from Holley. (cross-reference 80408, 75021-1, 80559,) base gasket sold separate part number #1127   Bin Number (ISBN): 92008
      $114.20
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