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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.

  • OIL DRAIN KIT 302/351/GM OIL DRAIN KIT 302/351/GM

    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

    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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  • SPARK PLUG EACH GM STNDRD EGNS SPARK PLUG EACH GM STNDRD EGNS

    SPARK PLUG EACH GM STNDRD EGNS

    NGK Spark Plug Standard GM Engines 5.7L 454 NGKBR6FS: Fits: Most GM Engines Up To Around 1997 - 5.7 454 Does NOT Fit: Indmar LT1 engines  Note: Sold Individually - Order Quantity 8 * NGKBR6FS Direct Cross To MR43T Bin Number (ISBN): 92718
    $3.45
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  • HOLLEY 4010 FISHBOWL RENEW KIT HLY-703-53

    HOLLEY 4010 FISHBOWL RENEW KIT HLY-703-53

    Holley 4010 Fishbowl Renew Kit HLY-703-53 OEM HOLLEY KIT Fits:50483, 50483-1, 84046, 84046-1. Kit includes secondary diaphram and base gasket. The center-hung duracon (white) floats are no longer available. Holley 4010 Fishbowl Renew Kit HLY-703-53 in...
    $116.00
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  • SPARK PLUG KIT 5.7L GEN 1+

    SPARK PLUG KIT 5.7L GEN 1+

    Spark Plug Kit Vortec 5.7L AUTOLITE RP030008: Fits: Vortec 5.7  GM Vortec 300+ HP (Rep. MR43LTS) Includes 8. The Vortec engines have the intake manifold bolts installed going straight down non Vortec bolts are angled. PLUG GAP .045. but...
    $34.50
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  • FAKE-A-LAKE

    FAKE-A-LAKE

    Whether you need to flush, tune-up or winterize your inboard engine, you can easily run your boat engine at home and out of the water with the Fake-A-Lake.  Genuine "Fake-A-Lake" Inboard Flusher (the USA made original!) Constructed of...
    $79.25
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  • SPARK PLUG GM VORTEC 5.7 SPARK PLUG GM VORTEC 5.7

    SPARK PLUG GM VORTEC 5.7

    NGK TR5 Spark Plug GM VORTEC 350 Carb or EFI: Fits: VORTEC 350, REPLACES MR43LTS NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing...
    $3.40
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  • ZINC, RUDDER 3-3/4 ZINC, RUDDER 3-3/4

    ZINC, RUDDER 3-3/4

    A sacrificial magnet to fight electrolysis in salt water and brackish water applications. 3-3/4" O.D. zink with stainless bolt/nut and copper bushing for permanent ground. Bin Number (ISBN): 101812  
    $19.40
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  • SPARK PLUG KIT PLATINUM VORTEC 5.7L

    SPARK PLUG KIT PLATINUM VORTEC 5.7L

    Spark Plug Set Replaces Iridium AC Delco 41-101, 41-932 and 41-993 (Now Delco #14).  Fits: 1996 UP VORTEC GM 5.0 and 5.7 PCM & Indmar engines Bin Number (ISBN): 200418 Please note that these plugs are now platinum. The old plugs were iridum...
    $85.00
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