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Add to CartQuicksilver MR43LTS spark plugs come pre-gapped as specified by your engine manufacturer. Use only the spark plug listed in your engine owner’s manual. Using the wrong plug can reduce optimum performance, reduce fuel economy or cause damage to your engine. Spark plugs are easy to change with common spark plug sockets.
Application: Fits 2002-2016 MerCruiser 4.3L, 5.0L & 5.7L carbureted engines
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Other Details
AC Delco MR43LTS Iridium Spark Plug This AC Delco spark plug iridium construction provides outstanding strength and high temperature resistance. Made with nickel alloy tip, copper core and...
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Quicksilver 33-8M0204728 Spark Plug NGK ZFR5F The NGK Standard plugs come pre-gapped as specified by your engine manufacturer. It is always recommended to check the gap before installation. Use only...
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