AC Delco MR43T Spark Plug from AC DELCO available through Usave Discount Marine, with fast, low cost shipping AC Delco Spark Plug, MR43T, crusader spark plug, mercruiser spark plug, omc spark plug, boat engine spark plug, Quicksilver AC Delco MR43T Spark Plug, 1Pack Marine Spark Plug Wire Set for Mercruiser V8 Thunderbolt or Delco EST Replaces Q61 4. 9 out of 5 stars 28. 41. 95. Spark Plug Wire Set for Mercruiser Thunderbolt V6 and Delco EST V6 Replaces Q16 Jun 26, 2018 I thought I'd replace the spark plugs in my 1997 5.
7 EFI since they have 556 hours on them. The Mercruiser parts manual stated AC Delco MR43T so I bought eight at the parts store. I started to replace them and when I pulled the first one out, the existing Buy Spark Plug Copper AC MR43T online from NAPA Auto Parts Stores. Get deals on automotive parts, truck parts and more.
ACDelco offers reliable replacement Marine Spark Plugs with efficient performance perfect for your boat engine. Locate parts or service near you. 4. 5 out of 5 stars New Open Box AC Delco MR43T Marine Engine Spark Plug Mercruiser Volvo Penta AC Delco MR43T Spark Plug. Tip Material Nickel Alloy, Core Material Copper, Thread Size 14mm, Seat Tapered. Replaces NGK BR6FS. Maintain a highperforming ignition system in your GM marine engine with a quality spark plug specifically for GM V8 preVortec engines.
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