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Parts Selection Guide

Find the parts you need

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Prop Selection Guide

Find the right prop for your boat

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      Mercruiser Spark Plug Wires

      • CDI 631-0011 Spark Plug Wires
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        CDI 631-0011 Spark Plug Wires

        $144.49
        $102.49

        CDI 631-0011 Spark Plug Wire Set 6 Cyl) Conventional Ignition with Delco Breaker Point Distributor Mercury Marine 470, 485, 488, 3.7L Aluminum Block Engines Fits: Mercruiser 2001-2017 350 MAG MPI ALPHA/BRAVO 2001-2017 350 MAG MPI ALPHA/BRAVO...

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      • Sierra 18-8838-1 Spark Plug Wire Set
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        Sierra 18-8838-1 Spark Plug Wire Set

        $548.99
        $416.99

        Sierra 18-8838-1 Spark Plug Wire Set for Indmar Inboards & Mercruiser Drives Sierra replacement spark plug wire set for Mercruiser Stern Drives and Indmar Inboards. Specifications: Ignition Type: Distributorless Cyl.: 8 Spark Plug Wire...

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      • CDI 631-0023 Spark Plug Wires
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        CDI 631-0023 Spark Plug Wires

        $56.99
        $40.49

        CDI 631-0023 Spark Plug Wires The CDI 631-0023 is a 5 pack of Spark Plug Wires designed for Mercruiser, OMC, and Marine Power engines. (4 Cyl) Mercruiser 3.0 LX (1991-97) Fits: Marine Power 1993-2017 3.0L Mercruiser 1991-1994 3.0L...

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      • CDI 631-0013 Spark Plug Wires
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        CDI 631-0013 Spark Plug Wires

        $74.99
        $53.49

        CDI 631-0013 Spark Plug Wires (6 Cyl) Conventional Ignition with Delco Breaker Point Distributor Crusader Marine 229, 262 (4.3L) w/Elect. Ign., Indmar, Mastercraft, Marine Power 262 (4.3L) w/Electronic Ign. Mercury Marine 185MR, 205MR, 4.3XL w/Elect...

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      • Mercruiser 84-816761Q-9 Spark Plug Wire Kit
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        Mercruiser 84-816761Q-9 Spark Plug Wire Kit

        $116.49
        $101.49

        Mercruiser 84-816761Q-9 Spark Plug Wire Kit Genuine OEM Mercury - Mercruiser part. Fits: GM & Ford V‑8 engines w/ conventional points ignition (1963‑1982) and Thunderbolt ignition (1968‑1976) Special Order Item.

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      • EMP 84-28009 MerCruiser Ignition Wire Set
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        EMP 84-28009 MerCruiser Ignition Wire Set

        $95.99
        $79.99

        EMP 84-28009 MerCruiser Ignition Wire Set This ignition wire set is intended for use with MerCruiser, Indmar, Crusader engines and meets all OEM requirements. These cables features a inner Kevlar core to help eliminate breakage. A layered carbon...

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      • Mercruiser 84-816761A10 Spark Plug Wire Kit
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        Mercruiser 84-816761A10 Spark Plug Wire Kit

        $73.49
        $46.49

        Mercruiser 84-816761A10 Spark Plug Wire Kit Genuine OEM Mercury - Mercruiser part. Fits: GM V‑8 454/482 cid engines w/ conventional points ignition (1977‑1985) and Thunderbolt ignition (1969‑1981)

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      Mercruiser OEM Engine Parts Finder

      MerCruiser Spark Plugs Wires

      Over time, salt spray, humidity, and UV rays take their toll on many boat systems, even those that are not readily visible. That is why it is so important to routinely check your Mercruiser spark plugs, wires, and wiring harness for signs that its service life is over. If your plugs are pitted and your engine performance has diminished, their replacement is a no-brainer. With wiring it is a bit harder to tell.

      There are two schools of thought here. Those boaters who push the envelope and replace their Mercruiser sparks and wiring only when one or both fail, and those who watch their engine hours and replace each according to their manufacturer’s recommendations.

      Need Help Selecting the Right Mercruiser Spark Plugs/Wires?

      Whichever type of boater you are, know that when your Mercruiser spark plugs and wires are in need of replacement that you’ll find just what you need, and receive it just as quickly. Wholesale stocks a wide range of wiring harnesses by Sierra a name boaters trust. If you’re not certain exactly what part you’ll need, you have two options.

      Be sure to use our convenient parts selector to find just the right Mercruiser spark plugs and wires for your engine. If you’d prefer, speak with one of our knowledgeable representatives. We’re here to serve you Monday through Friday from 9:00 AM until 6:00 PM EST at (877) 388-2628. For even greater savings, don’t forget to ask us about our Captain’s Club Rewards Program. This way you’ll accrue points you can redeem the very next time you shop at Wholesale Marine!