This listing is about one (1) NGK Spark Plug for MERCURY outboard engines 6.0 hp, yr. 1967-1968 and 7.5 hp, yr. 1969 - after, which replaces OEM Part #823 70 M1.
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![Spark Plug for MERCURY outboard 6.0hp, 7.5hp [#82370M1]](https://www.dlastore.com/media/catalog/product/cache/ba670861d278867c6cf425419441a5b6/B/6/B6HS_4510_13.jpg)