Seller notes

Thermostat 140° For Mercruiser 2.5L 120 hp & 3.0L 140 hp 4 Cyl 59078T3 18-3550 Replaces Mercruiser Part #: 59078T3, 59078Q3, 59078T4，Sierra 18-3650/18-3550 Fits The Following Mercruiser Applications: HP/Model Serial # Year 120 hp 2.5L 2324347 - 0C853255 1968 - 1989 140 hp 3.0L 2508261 - 0F603999 1968 - 1994 3.0L 0L010042 - 0L340999 1998 - 2000 3.0LX 0C856559 - 0K999999 1990 - 1997 165 hp Inline 6 2770032 - 5813433 1970 - 1981 Related FitmentMercury MerCruiser Sterndrive Parts by Year Mercruis...

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