Boat owners can buy Mercury outboard spark plugs from Go2marine and West Marine. They can also check with local marine stores.
Another option for buying outboard spark plugs is eBay or local auto part stores.All of the retailers carry not only spark plugs but a large range of other boat parts and accessories. The exact inventory varies.
When searching for spark plugs, customers should know the year and model of their outboard engine to ensure they find ones that are compatible. Buyers should also opt for new spark plugs since used or older plugs may not function properly.