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Mercruiser Spark Plug Wires

8217
guidebook

Parts Selection Guide

Find the parts you need

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Prop Selection Guide

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      • Sierra 18-8810-1 Wiring Plug Set Replaces 84-816761Q16
        List Price: $53.99
        Starting At: $37.99

        Mercruiser Thunderbolt V6 Spark Plug Wire Set by Sierra For 6 cylinder engines with Thunderbolt ignition systems. Kit includes coil wire. Kevlar® core for maximum durability and long life. Durable stainless steel wound conductor for maximum...

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      • Sierra 18-8802-1 Wiring Plug Set Replaces 84-816761Q12
        List Price: $70.99
        Starting At: $49.99

        Premium 8cyl Spark Plug Wire Set by Sierra For 8 cylinder GM based engines with conventional ignition systems. Key Features: Kit includes coil wire. Kevlar® core for maximum durability and long life. Durable stainless steel wound conductor for...

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      • Sierra 18-8821-1 Spark Plug Wiring Plug Set
        List Price: $77.99
        Starting At: $54.49

        Sierra 18-8821-1 Mercruiser Thunderbolt V8 Gen+ Spark Plug Wire Set Sierra replacement engine parts are designed to meet or exceed OEM requirements. This spark wire set is used on Mercruiser engines. Kit includes coil wire. Kevlar core for maximum...

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      • Sierra 18-8833-1 Wiring Plug Set Replaces 84-816761K14
        List Price: $51.99
        Starting At: $36.49

        Premium Delco EST 4Cyl Spark Plug Wire Set by Sierra For Mercruiser 3.0LX 4 cylinder engines with Delco EST ignition systems. Kit includes coil wire. Kevlar® core for maximum durability and long life. Durable stainless steel wound conductor for...

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      • Sierra 18-8811-1 Wiring Plug Set Replaces 84-816761Q13
        List Price: $44.99
        Starting At: $33.99

        Sierra 18-8811-1 Wiring Plug Set For all 4 Cyl. engines with a digital ignition system. Used on Mercruiser and OMC marine engines. Kit includes 5 wires. Key Features: Kevlar core for maximum durability and long life Durable stainless steel wound...

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      • Sierra 18-8835-1 Spark Plug Wire Set
        List Price: $82.99
        Starting At: $57.99

        Sierra 18-8835-1 Spark Plug Wire Set Sierra replacement spark wire set for Mercruiser Stern Drives. Sierra’s spark plug wire sets are designed exclusively for marine engines and are the highest quality marine sets available anywhere in the...

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      • Sierra 18-8809-1 Wiring Plug Set Replaces 84-816761Q8
        List Price: $68.99
        Starting At: $48.49

        Sierra 18-8809-1 Mercruiser Spark Plug Wire Set For an inline 6 cyl. engine with conventional ignition system. Used on Mercruiser Stern Drives. Kit includes coil wire. Ignition Type: Conventional Interchangeable...

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      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!