Sierra’s spark plug wire sets are designed exclusively for marine engines and are the highest quality marine sets available anywhere in the world. Sierra's sets are custom-tailored to each marine engine for a perfect fit. In addition, they have been thoroughly tested to ISO quality standards and will out perform any other marine wire set.
Lead Lengths:
Interchangeable with:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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...
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Sierra 18-5273 Mercruiser Tune Up Kit for V8 Thunderbolt HEI Ignitions Sierra high-quality engine parts are designed to meet OEM specifications. Fits GM V-8 engines with Thunderbolt IV & V...
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Sierra 18-8828-1 Wiring Plug Set For Mercruiser 5.0L MIE MPI V8 with Delco HEI ignition system. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Ignition Type:...
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Mercruiser Thunderbolt V8 Spark Plug Wire Set by Sierra For 8 cylinder engines with Thunderbolt ignition systems. Kit includes coil wire. Kevlar® core for maximum durability and long...
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NGK BR6FS Spark Plug The NGK BR6FS Spark Plug is a standard NGK plug. NGK Standard plugs are an OE cornerstone that have provided decades of reliable performance. The solid copper core offers...
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NGK BPR6EFS Spark Plug This standard spark plug features a copper core to promote heat dissipation and more efficient spark plug operation; has a threaded terminal. Check your engine and...
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Wire Kit Ignition, Mercury - Mercruiser 84-816608Q83. SS from 84-816608a83.
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Sierra 18-5395 Distributor Cap Replaces 805759T1 Includes Gasket Replaces: Mercrusier 16457A4,805759T2,805759T1,...
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Mercury - Mercruiser 805759T-3 Cap & Rotor Kit Fits GM V-8 engines with Thunderbolt IV and V HEI...
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Champion RS12YC Copper Plus Marine Spark Plugs Champion marine spark plugs are quality OEM replacements. The Champion RS12YC Spark Plug features a copper core electrode that provides increased...
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