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Add to CartSierra’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
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...
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Sierra 18-8810-1 MerCruiser Thunderbolt V6 Spark Plug Wire Set Sierra replacement spark plug wire set for MerCruiser Stern Drives. For 6 cylinder engines with Thunderbolt ignition systems...
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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...
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Sierra 18-8829-1 Mercruiser HEI V6 Spark Plug Wire Set For Mercruiser 4.3L MPI with Delco HEI ignition. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements...
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Sierra 18-8803-2 Premium 8 Cyl Spark Plug Wire Set Sierra 18-8803-2 Premium Spark Plug Wire set is for 8 cylinder engines with conventional ignition systems. Used on Mercruiser and OMC V8 GM...
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