All of our items use calculated shipping. Many items have multiple shipping options for you to choose the lowest cost option.All of our items use calculated shipping. Many items have multiple shipping options for you to choose the lowest cost option.Looking for high-quality spark plugs for your marine engine? Look no further than this set of 2 AC Marine Spark Plugs, model number VB40FFM. Made in the United States by AC Delco, a trusted name in automotive parts, these spark plugs are designed to deliver reliable performance and longevity. With the manufacturer part number 22783A-1, you can be sure you're getting the right spark plugs for your engine. Don't let a lack of quality parts hold you back from enjoying your time on the water. Order this set of AC Marine Spark Plugs today and get ready to hit the high seas with confidence!