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Thread: Spark Plug Wire Change

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  1. #1
    Baja Boat Owner
    Join Date
    Jul 2012
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    2000 Baja Hammer
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    Spark Plug Wire Change

    So I have a 2000 Hammer with a 7.4 MPI and purchased a new set of spark plug wires for it and I just noticed this:

    ★FITS ENGINE -
    For all small block (5.0-5.7L) and big block (7.4)L engines with Thunderbolt ignition except for the 454 Hi Performance

    Im not sure what ignition system I have, since I’m sure it’s stock, and was wondering if this matters if it’s not a “Thunderbolt Ignition”?

    Any help is much appreciated and thank you.

  2. #2
    Baja Supporter Kefurr's Avatar
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    Re: Spark Plug Wire Change

    what part number are the wires you got?
    my guess would be the coil wire will be different, the leads from distributor to plugs may be the same

  3. #3
    Baja Boat Owner
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    Re: Spark Plug Wire Change

    Quote Originally Posted by Kefurr View Post
    what part number are the wires you got?
    my guess would be the coil wire will be different, the leads from distributor to plugs may be the same
    ★REPLACES -
    Mercruiser 84-816608Q61
    ★WORKS WITH -
    For Mercruiser V8 Thunderbolt, Delco EST system.

  4. #4
    Baja Supporter Kefurr's Avatar
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    Re: Spark Plug Wire Change

    I think you would need 84-816608Q68 for your application


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