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Spring Tune Up

Time for a tune up? Discount Inboard Marine has you covered. Our selection of boat tune up products is full of everything you need. From Kit Filters with O'Rings to Fuel Filter Spins, you can count on our boat tune up parts to help you keep your boat in top shape. Shop our boat repair products today! We look forward to providing you with unparalleled service.

  • V-BELT, W/TEETH 302/305/350

    V-BELT, W/TEETH 302/305/350

    Napa V-Belt PCM Indmar GM 305 & 350 Ford 302 25-7420 Fits: Indmar GM TBI (94-97) 305 & 350 and Ford 302  V-Belt, with teeth. This is a NAPA (Gates) Replacement Belt. Usually will not fit Monsoon engines or will be very tight...
    $34.57
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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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  • 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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  • 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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  • 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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  • FUEL FILTER RACOR 110 RACR11T FUEL FILTER RACOR 110 RACR11T

    FUEL FILTER RACOR 110 RACR11T

    Fuel filter and water separator/filter element. Metal canister, Model 110. Drop in element. Simply loosen center bolt, spin off canister, replace filter, after dumping out water and cleaning out gunk. Save that carburetor from trouble.   Bin Number...
    $34.00
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  • FILTER ELEMENT, TALL

    FILTER ELEMENT, TALL

    FUEL FILTER SPIN ON 4-1/4 HEIGHT SIE18-7845: REPLACES MERC 35-60494, MERC 35-802893Q, Merc 35-807172, A/P #6031 & 6041, SIERRA #18-7850, GLM #24940, SMI-15494, M/P 395524, Fram PS3808, Crusader 22687. Bin Number (ISBN): 0504
    $10.95
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  • FILTER ASSEMBLY FILTER ASSEMBLY

    FILTER ASSEMBLY

    Sierra Mercruiser style 21-micron filter and top housing. Uses item # 0504 replacement filter. Replaces PCM Racor filter assembly with no modifications. Replaces other element style filters with some slight engineering. 1/4" NPT...
    $46.45
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