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ELECTRICAL and TUNE UP

Your watercraft is an investment and one that you put a lot of time and money into. Keep it running its absolute best with inboard boat tune-up kits and accessories from Discount Inboard Marine. Whether you're shopping for a marine alternator, a tune-up kit or spark plugs, we have everything you need to maintain or repair your inboard ski boat. Discover why boaters around the world trust and rely on Discount Inboard Marine.

  • DELCO TIMING TOOL DELCO TIMING TOOL

    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...
    $69.80
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  • STARTER RELAY STARTER RELAY

    STARTER RELAY

    Starter Relay Solenoid R130001: Test starter after installation, does not inlcude nuts/washers re use the old ones. If starter stays engaged, it is an indication of a low amperage problem. Check both ends of the battery cables and main grounds. From...
    $37.13
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  • CAP & ROTOR GM DELCO CAP & ROTOR GM DELCO

    CAP & ROTOR GM DELCO

    Cap & Rotor GM Delco Tune-Up Kit RP173081: Fits: Most Indmar EFI and carbureted after 1993, Indmar thru 2005 (Monsoon, MCX, RTP) PCM TBI thru 2001. Does NOT Fit: coil pack type ignitions like LT1, PCM EFI GM 305, 350, 8.2L TBI & MPI 95...
    $41.45
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  • SPARK PLUG KIT GM 5.7L VORTEC 1997 UP

    SPARK PLUG KIT GM 5.7L VORTEC 1997 UP

    Spark Plug Kit 97 up GM Vortec 5.7L MR43LTS GM Vortec 300+ HP Includes 8. The Vortec engines have the intake manifold bolts installed going straight down non Vortec bolts are angled. PLUG GAP .045. but if using with HVS ignition .060 is...
    $51.50
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  • SPARK PLUG KIT 302/351 (14MM) SPARK PLUG KIT 302/351 (14MM)

    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...
    $39.02
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  • CIRCUIT BREAKER 12.5 AMP

    CIRCUIT BREAKER 12.5 AMP

    Circuit Breaker 12.5 AMP What is a Circuit breaker? It's an electro-mechanical device specifically designed to protect electrical circuits from a circuit overload. It interrupts the current flow when a fault is detected. The surge of...
    $85.38
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  • DUI DISTRIBUTOR GM 350/454 LH

    DUI DISTRIBUTOR GM 350/454 LH

    Davis Unified Ignition Marine Distributor GM 5.7 & 454 carbureted engines. It fits left and right-hand rotation engines thru the 1980's that reverse engine rotation using a timing gear (not chain). If you're looking for a simple, powerful solution...
    $468.75
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  • CIRCUIT BREAKER 15 AMP CIRCUIT BREAKER 15 AMP

    CIRCUIT BREAKER 15 AMP

    USED ON PCM GT40 ENGINES ALONG WITH A 60 AMP AND A 15 AMP.   What is a Circuit breaker? It's an electro-mechanical device specifically designed to protect electrical circuits from a circuit overload. It interrupts the current...
    $57.60
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  • ALTERNATOR, NMR LT1/LTR REPLACEMENT ALTERNATOR, NMR LT1/LTR REPLACEMENT

    ALTERNATOR, NMR LT1/LTR REPLACEMENT

    Replaces Indmar LT1 "Corvette" and LTR "Northstar" 1994-2001 (55 AMP) alternators PT#75-5024 (S755024). Purple wire is for keyed 12 volt source (excite wire, ignition circuit). Red wire goes to constant hot. NOT for Ford 351.   Bin Number...
    $218.70
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