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Always use a new gasket during installation to ensure a proper seal
2mm (1-5/8")
it is critical
installation is a straightforward bolt-on process
Spark Plug Wire Set – Fits MerCruiser 5.0L-6.2L MPI (Replaces 84-863656A1) 173HP Always use a new gasketProduct Details This high performance Mercruiser Spark Plug Wire Set is engineered for V 8 MerCruiser stern drive and inboard engines (5. 0L, 5. 7L, and 6. 2L MPI) equipped with the ECM 555 electronic control module. It is a direct fit for models with serial numbers from 0M300000 through 2A455878. This set serves as a direct cross reference for Mercury Quicksilver 84 863656A1, Sierra 18 8828 1, and Indmar 756003 S756003. Designed as a direct OEM
