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Your cart is empty.Spark plug set 816608Q68 is for use on V8 (350, 454 and 502 CID) General Motors marinized engines with Delco HEI ignition systems (1993 through 2010).The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine Original Equipment replacement engine parts, oils, and accessories, but also works to serve all Original Equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind.
Bill
Reviewed in the United States on August 1, 2024
Intermittent misfire resolved with these wires. Satisfied customer
GenuineSuede
Reviewed in Canada on August 1, 2023
Used on SBC with HEI ignition. High quality wire and end caps. Good fit.
Louis Aguirre
Reviewed in the United States on October 18, 2022
Wires fit well and looked good! No misfires.
Tim
Reviewed in the United States on September 8, 2021
Matched my OE wires on my 1997 7.4L MPI Mercruiser engines
David Mayes
Reviewed in the United States on August 18, 2021
Prompt service good quality
Garland harless
Reviewed in the United States on July 29, 2021
Exactly as described! For my 2000 mercury 7.4 mpi
Customer
Reviewed in the United States on August 14, 2019
lengths of wires were all perfect
CMC Seller
Reviewed in the United States on September 2, 2015
Fixed my problem.
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