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Marine Spark Plug Wires

Shop at Marine Parts Source when you need spark plug wire kits for an inboard or inboard/outboard engine. Most boat enthusiasts know they need to periodically replace the spark plugs, but the wires are just as important for good ignition system performance. Worn-out or broken wires can cause problems like difficulty starting the engine, rough idling and excess fuel usage. Get these replacement spark plug wires for scheduled maintenance or at the first sign of trouble to keep up your engine’s performance.

We have OEM and aftermarket wire sets for all leading boat engine manufacturers, including Crusader, MerCruiser, Volvo Penta, Chris Craft and Indmar. Select a wiring product to see a list of which engines and ignition systems it is compatible with. Even if you only need to replace one or two wires, ordering a full set will have you prepared in case of future issues. Many other ignition parts are available with fast shipping from warehouses across the U.S.

Spark Plug Wire Sets

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  1. Crusader 8.1L spark plug wire set
    8.1 liter Spark Plug Wire Set | Crusader RK120019
    CRU-RK120019
    Qty In Stock: 64
    Brand: Crusader

    Original Crusader 7 mm ignition wire set fits Crusader 8.1 liter marine engines.

    Learn More
    MSRP: $82.54 $68.47
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  2. cru98171_lg
    EST Distributor Spark Plug Wire Set | Crusader 98171
    CRU-98171
    Qty In Stock: 58
    Brand: Crusader

    Original Crusader 7mm ignition spark plug wires fit Crusader big block engines with Delco EST electronic ignition marine distributors.

    Learn More
    MSRP: $70.35 $68.07
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  3. Small Image
    EST Distributor Spark Plug Wire Set | Crusader 98070
    CRU-98070
    Qty In Stock: 33
    Brand: Crusader
    Original Crusader 7mm ignition wire set fits Crusader small block engines with Delco EST electronic ignition marine distributors. Learn More
    MSRP: $56.81 $54.97
    Add to Wishlist
  4. Small Image
    V8 Spark Plug Wire Set | Crusader 97454
    CRU-97454
    Qty In Stock: 22
    Brand: Crusader
    Original Crusader 7mm ignition wire set fits Crusader engines with Prestolite electronic ignition marine distributors. Learn More
    MSRP: $64.91 $62.82
    Add to Wishlist
  5. Crusader RK120018A 5.7L Spark Plug Wire Set
    5.7 liter Spark Plug Wire Set | Crusader RK120018A
    CRU-RK120018A
    Qty In Stock: 18
    Brand: Crusader

    5.7 liter Spark Plug Wire Set 

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    MSRP: $101.89 $84.50
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  6. Small Image
    4 Wire Ignition Retainer | Crusader 22222
    CRU-22222
    Qty In Stock: 28
    Brand: Crusader
    4 Wire Ignition Retainer Learn More
    MSRP: $0.94 $0.91
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  7. Spark Plug Wire Set | Crusader RA121008/9
    Spark Plug Wire Set | Crusader RA121008/9
    CRU-RA121008/9
    Qty In Stock: 0
    Brand: Crusader

    Spark plug wire set. Fits Ford 302 & 351 V8 small block engines.  7mm diameter.

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    MSRP: $45.86 $45.83
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  8. Small Image
    HEI Coil Wire | Crusader 98094
    CRU-98094
    Qty In Stock: 8
    Brand: Crusader

    HEI Coil Wire

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    MSRP: $8.66 $8.37
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  9. 5.7L Spark Plug Wire Set | Crusader RK120023
    5.7L Spark Plug Wire Set | Crusader RK120023
    CRU-RK120023
    Qty In Stock: 0
    Brand: Crusader

    5.7L Spark Plug Wire Set

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    MSRP: $81.11 $77.07
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  10. Large Image
    Crusader 6.0L Spark Plug Wire Set | Crusader RK120021A
    CRU-RK120021A
    Qty In Stock: 9
    Brand: Crusader
    Original Crusader 7mm ignition wire set fits Crusader 6.0L MPI marine engines. Learn More
    MSRP: $92.03 $76.37
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  11. Small Image
    Crusader V8 HVS Spark Plug Wire Set | Crusader RK120020
    CRU-RK120020
    Qty In Stock: 5
    Brand: Crusader
    Original Crusader 7mm ignition wire set fits Crusader 5.0L & 5.7L right hand rotation marine engines with Delco HVS distributors. Learn More
    MSRP: $84.98 $70.44
    Add to Wishlist
  12. Crusader RK120021B 6.0L Catalyst Spark Plug Wire Set
    6.0L Catalyst Spark Plug Wire Set | Crusader RK120021B
    CRU-RK120021B
    Qty In Stock: 2
    6.0L Catalyst Spark Plug Wire Set Learn More
    MSRP: $83.75 $83.72
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